SINEC L2 Interface of the S5-95U Programmable

SINEC L2 Interface of the S5-95U Programmable
SIMATIC S5
SINEC L2 Interface of the
S5-95U Programmable Controller
Manual
EWA 4NEB 812 6112-02a
Edition 02
STEP ® SINEC ® and SIMATIC ® are registered trademarks of Siemens AG.
Copyright© Siemens AG 1993
Subject to change without prior notice.
The reproduction, transmission or use of this document or its contents is not
permitted without express written authority. Offenders will be liable for
damages. All rights, including rights created by patent grant or registration of
a utility model or design, are reserved.
EWA 4NEB 812 6112-02
Data Transmission Using a Standard Connection
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Integrated Standard Function Blocks, L2-SEND and L2-RECEIVE
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Data Transmission Using PLC to PLC Connections
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Data Transmission Using Cyclic I/O (ZP)
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Start-Up, Tests, and Diagnostics
Data Transmission by Accessing Layer 2 Services
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Installation Guidelines
Programmer Functions Over the SINEC L2 Network
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System Description
Appendices
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Preface
Index
EWA 4NEB 812 6112-02
1
2
3
4
5
6
7
8
9
A/B/C/
D/F
S5-95U/95U, SINEC L2
Table of Contents
Table of Contents
Page
Preface
1
System Description
3
..........................................
1 - 1
1.1
Communications in Industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 - 1
1.2
The SINEC L2 Local Area Network . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 - 3
1.3
Procedure for Accessing the SINEC L2 Network
1 - 4
1.4
Assigning Parameters for the L2 Interface of the S5-95U
1.5
Types of Data Transmission for the S5-95U
1.6
Physical Bus Characteristics and Installation Techniques
for the SINEC L2 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS 485 Transmission Technology . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fiber Optics Transmission Technology . . . . . . . . . . . . . . . . . . . . . . . .
Mixed Configuration of RS 485 and Fiber Optics Transmission Technology
1.6.1
1.6.2
1.6.3
2
ix
....................................................
Installation Guidelines
.................
...........
....................
1 - 8
1 - 13
1
1
1
1
-
21
21
25
28
........................................
2 - 1
2.1
Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 - 1
2.2
Installing a SINEC L2 Bus Segment
2 - 2
2.3
2.3.1
2.3.2
2.3.3
Linking Bus Segments with the L2 Repeater . . . . . . . . . . . . . . . . . . . .
Electrical Design of the SINEC L2 Repeater RS 485
..............
Connecting the Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Bus Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2
2
2
2.4
Routing Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 - 8
Start-Up, Tests, and Diagnostics
..........................
................................
3.1
Design and Mode of Operation of the Programmable Controller
3.2
START-UP Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EWA 4NEB 812 6112-02
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-
4
4
5
6
3 - 1
3 - 2
3 - 4
v
Table of Contents
S5-95U/95U, SINEC L2
Page
3.3
3.3.1
3.3.2
3.3.3
Starting Up a System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suggestions for Configuring and Installing the Equipment . . . . . . . . . . .
Prerequisites for Starting Up the S5-95U as a SINEC L2 Station . . . . . .
System Startup Diagnostics and Procedures . . . . . . . . . . . . . . . . . . . .
3
3
3
3
-
5
5
6
7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Types of FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assigning Parameters in DB1 for the FMA Services . . . . . . . . . . . . . . .
Managing of all FMA Services with FB222 . . . . . . . . . . . . . . . . . . . . . .
Reading Out a List of All Active Stations on the Network
(LAS_LIST_CREATE)
...................................
Reading the Status of Another Station (FDL_STATUS)
............
Reading Updated Bus Parameters (READ_VALUE) . . . . . . . . . . . . . . .
Reading Out Available Token Hold Time When Receiving the Token
(TIME_TTH_READ)
....................................
Reading Out the Event Message (MAC_EVENT)
................
3
3
3
3
3
-
10
10
12
13
14
3.4.6
3.4.7
3.4.8
3.4.9
4
5
vi
Data Transmission Using a Standard Connection
...................
3 - 17
3 - 19
3 - 21
3 - 24
3 - 26
4 - 1
4.1
Features of a Standard Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 1
4.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange with
Standard Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 3
4.3
Transmitting Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 5
4.4
Receiving Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 7
4.5
Programming Example for Data Transmission via a Standard Connection
4 - 9
4.6
Broadcast Request (“Transmit to All”)
4 - 14
........................
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
..........
5 - 1
5.1
Parameters for L2-SEND and L2-RECEIVE . . . . . . . . . . . . . . . . . . . . .
5 - 2
5.2
Direct and Indirect Parameter Settings for the L2 Function Blocks
5 - 4
5.3
Parameter Assignment Error Byte (PAFE)
5.4
Status Byte
.....
......................
...........................................
5 - 5
5 - 6
EWA 4NEB 812 6112-02
S5-95U/95U, SINEC L2
Table of Contents
Page
6
Data Transmission Using PLC-to-PLC Connections
8
6 - 1
......................
6 - 1
6.1
Features of the PLC-to-PLC Connections
6.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange
with PLC-to-PLC Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 - 4
Programming Example for Data Transmission via PLC-to-PLC Connections
Using Standard Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 - 6
6.3
7
..................
Data Transmission Using Cyclic I/O
..............................
....................................
7 - 1
7.1
Features of Cyclic I/O
7.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange
with Cyclic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 - 4
7.3
Controlling Data Transmission in the Control Program
7 - 7
7.4
Programming Example for Data Transmission via Cyclic I/O
Data Transmission by Accessing Layer 2 Services
.............
.........
..................
8.1
Characteristic Features of Layer 2 Access Data Transmission
8.2
Types and Characteristic Features of the Layer 2 Services
8.3
Assigning the S5-95U Parameters for Data Communications
8.4
FBs for Managing All Layer 2 Services
8.5
7 - 1
7 - 12
8 - 1
........
8 - 2
..........
8 - 5
.........
8 - 9
........................
8 - 11
Sending Data to a Station (SDA Service)
......................
8 - 15
8.6
Sending Data to Several Stations (SDN)
.......................
8 - 19
8.7
Holding Data for Fetching Once Only by a Station
(RUP_SINGLE Service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 - 23
Holding Data Ready for Fetching Several Times Over by One
or More Stations (RUP_MULTIPLE) . . . . . . . . . . . . . . . . . . . . . . . . . .
8 - 26
Sending Data and Fetching Data from a Station (SRD Service)
8 - 29
8.8
8.9
EWA 4NEB 812 6112-02
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vii
Table of Contents
S5-95U/95U, SINEC L2
Page
9
Programmer Functions Over the SINEC L2 Network
..................
9 - 1
9.1
Programmer Functions
...................................
9 - 2
9.2
Selecting the L2 Interface
.................................
9 - 3
9.3
Entering Defaults
.......................................
9 - 4
9.4
Editing a Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - 5
9.5
Setting the L2 Basic Parameters on the Programmer
9 - 10
9.6
Activating an Editing Path
..............
.................................
9 - 10
DB1 Parameters, DB1 Parameter Assignment Errors,
Calculation of Target Rotation Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A - 1
B
SAP Numbers / Job Numbers
...................................
B - 1
C
List of Abbreviations/Glossary
..................................
C - 1
D
List of Accessories and Order Numbers
E
Technical Specifications; Cycle Delay Times of the PLC Caused by
SINEC L2 Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E - 1
S5-95U Communications Matrix and Emulation of Types of Data
Transmission in Layer 2 with S5-95U . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F - 1
Appendices
A
F
...........................
D - 1
Index
viii
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Preface
How to Use This Manual
The S5-95U programmable controller with SINEC L2 interface can communicate with SIMATIC S5
controllers and other control devices via the SINEC L2 bus system.
To use the SINEC L2 interface to its full capacity, you need detailed information.
This manual contains descriptions for installing and operating the following programmable controllers
as SINEC L2 stations:
• S5-95U, Order No. 6ES5 095-8MB01
• S5-95U, Order No. 6ES5 095-8MB02
The manual does not provide information on the performance of other controllers on the L2 bus.
Only special features of the S5-95U pertaining to data interchange with the CP 5430
communications processor are mentioned.
Experience in configuring and starting up bus-type LANs is helpful, though not necessary, to work
with this manual successfully.
This section is intended to make it easier for you to use the manual.
Contents of This Manual
•
Chapter 1
This chapter provides an overview of the applications, performance capabilities, operation
principle, basic terminology, and transmission physics of the SINEC L2 bus system. This
chapter characterizes the possible types of data transmission and specifies and explains the
selection criteria for special applications.
•
Chapter 2
This chapter specifies the installation procedures that you should follow to ensure that your
S5-95U controller functions properly as a station on the SINEC L2 bus.
•
Chapter 3
This chapter summarizes information that you need to start up your S5-95U controller as a
station on the SINEC L2 bus. You will also discover how to recognize faults in the controller and
find out what tests and diagnostics are available to you.
•
Chapters 4, 5, 6, 7 and 8
These chapters use examples to describe the various types of data transmission in detail.
•
Chapter 9
This chapter shows you how to implement programmer functions over the LAN.
•
Appendices
The appendices contain two types of information. On the one hand, you will find brief
information for regular use (e.g., all the DB1 parameters); on the other hand, you will find
additional information of interest to network experts (e.g., concerning the SAPs).
Each chapter begins with a brief explanation of its contents. By reading the first section of a
chapter, you can determine whether the information in the chapter is important to you.
EWA 4NEB 812 6112-02a
ix
Preface
S5-95U, SINEC L2
Conventions
The "S5-90U/S5-95U System Manual" and the SINEC L2 Manual - Interface of the S5-95U
Programmable Controller" observe the same conventions.
All the conventions listed at the beginning of the System Manual apply also to this manual. Please
refer to that Manual. Your attention is also drawn to the "Safety-Related Guidelines for the User" on
page xi at the end of this chapter.
Courses
Siemens offer a wide range of training courses for SINEC users.
For more information, please contact
•
•
Informations- und Trainings-Center für Automatisierungstechnik
AUT 959 Kursbüro
Postfach 21 12 62
76181 Karlsruhe
Federal Republic of Germany
Tel.: (Nat. access code) 721 595-2917
or
Your nearest Siemens representative
Reference Material
This manual contains a comprehensive description of the SINEC L2 interface of the S5-95U
programmable controller. The following manuals etc. contain more detailed information on topics that
are handled only briefly here:
SINEC L2 Local Area Network
CP 5430
Order No. 6GK1 970-5AA00-0AA0
SINEC
L2/L2F0 Manual
Order No. 6GK1 970-5CA00-0AA0
Installation Guidelines:
Installing the SINEC L2 Local Area Network
Order No. AR 463-2-220
PROFIBUS Standard (DIN 19245)
Beuth-Verlag; Berlin 1988
Bender, Klaus: Profibus
Hauser-Verlag; Munich 1990
Kafka, Gerhard: Grundlagen der Datenkommunikation;
Datacom-Fachbuchreihe; Pulheim 1989.
(available in German only)
Stöttinger, Klaus H.: Das OSI-Referenzmodell;
Datacom-Fachbuchreihe; Pullheim 1989.
(available in German only)
There are correction forms at the end of this manual. Please use them to indicate any corrections,
additions or suggestions you might have in the way of improvement that will benefit the next edition
of the manual.
x
EWA 4NEB 812 6112-02a
S5-95U, SINEC L2
Preface
Safety-Related Guidelines for the User
This document provides the information required for the intended use of the particular product. The
documentation is written for technically qualified personnel.
Qualified personnel as referred to in the safety guidelines in this document as well as on the product
itself are defined as follows.
•
•
•
System planning and design engineers who are familiar with the safety concepts of automation
equipment.
Operating personnel who have been trained to work with automation equipment and are
conversant with the contents of the document in as far as it is connected with the actual
operation of the plant.
Commissioning and service personnel who are trained to repair such automation equipment and
who are authorized to energize, de-energize, clear, ground, and tag circuits, equipment, and
systems in accordance with established safety practice.
Danger Notices
The notices and guidelines that follow are intended to ensure personal safety, as well as protect the
products and connected equipment against damage.
The safety notices and warnings for protection against loss of life (the users or service personnel) or
for protection against damage to property are highlighted in this document by the terms and
pictograms defined here. The terms used in this document and marked on the equipment itself have
the following significance.
Danger
Warning
indicates that death, severe personal injury
or substantial property damage will result if
proper precautions are not taken.
Caution
indicates that death, severe personal injury or
substantial property damage can result if
proper precautions are not taken.
Note
indicates that minor personal injury or
property damage can result if proper
precautions are not taken.
contains important information about the
product, its operation or a part of the document to which special attention is drawn.
Proper Usage
Warning
•
•
The equipment/system or the system components may only be used for the
applications described in the catalog or the technical description, and only in
combination with the equipment, components, and devices of other manufacturers as far as this is recommended or permitted by Siemens.
The product will function correctly and safely only if it is transported, stored, set
up, and installed as intended, and operated and maintained with care.
EWA 4NEB 812 6112-02a
xi
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1
System Description
1.1
Communications in Industry
1.2
The SINEC L2 Local Area Network
1.3
Procedure for Accessing the SINEC L2 Network
1.4
Assigning Parameters for the L2 Interface of the S5-95U
1.5
Types of Data Transmission for the S5-95U
1.6
Physical Bus Characteristics and Installation Techniques for
the SINEC L2 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS 485 Transmission Technology . . . . . . . . . . . . . . . . . . . . . . . .
Fiber Optics Transmission Technology . . . . . . . . . . . . . . . . . . . . .
Mixed Configuration RS 485 and Fiber Optics
Transmission Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6.1
1.6.2
1.6.3
EWA 4NEB 812 6112-02
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1 - 1
1 - 3
1 - 4
1 - 8
1 - 13
1 - 21
1 - 21
1 - 25
1 - 28
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Figures
1-1.
1-2.
1-3.
1-4.
1-5.
1-6.
1-7.
1-8.
1-9.
1-10.
1-11.
1-12.
1-13.
1-14.
1-15.
1-16.
1-17.
1-18.
1-19.
1-20.
1-21.
1-22.
1
3
5
7
7
8
13
18
18
19
19
19
20
21
22
23
25
25
26
27
28
28
29
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1-23.
Hierarchy Levels in the Computer-Integrated Automation Network . . . . . . . 1 Bus Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1. .Bus Accessing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1. Distribution of the Target Rotation Time (1) . . . . . . . . . . . . . . . . . . . . . . .1 Distribution of the Target Rotation Time (2) . . . . . . . . . . . . . . . . . . . . . . .1 DB1 with the Default Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Data Transmission Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 . PLC-to-PLC Connection between Active S5-95Us . . . . . . . . . . . . . . . . . . . 1 Cyclical I/O between an Active and Passive S5-95U . . . . . . . . . . . . . . . . . 1 Standard Connection for Porting Programs from SINEC L1 to SINEC L2 . . 1 PLC-to-PLC Connection between an Active CP 5430 and an Active S5-95U
1 Cyclic I/O between an Active CP 5430 and a Passive S5-95U . . . . . . . . . . 1 Layer 2 Access between an Active CP 5410 and an Active S5-95U . . . . . . 1 SINEC L2 Bus Segment with RS 485 Technology . . . . . . . . . . . . . . . . . . . 1 SINEC L2 Network with RS 485 Technology . . . . . . . . . . . . . . . . . . . . . . .1 L2 Bus Connector with Degree of Protection IP 20 without
Connector for a Programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1. SINEC L2 Network with Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . .1 Point to Point Link via a Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . .1 SINEC L2FO Bus Terminal SF-B/PF-B . . . . . . . . . . . . . . . . . . . . . . . . . . .1 SINEC L2FO Active Star Coupler AS 501 . . . . . . . . . . . . . . . . . . . . . . . . .1 Mixed Configuration with RS 485 and FO Transmission Technology . . . . . 1 Two SINECL2 Networks of the RS 485 Technology Linked
via Fiber Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 SINEC L2FO SF Repeater Adapter for L2 Repeater . . . . . . . . . . . . . . . . .
1 -
Tables
1-1.
1-2.
1-3.
1-4.
1-5.
1-6.
1-7.
1-8.
1-9.
1-10.
1-11.
1-12.
1-13.
DB1 Basic Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. . Relevant Parameters for the S5-95U as an Active/Passive station . . . . . . . 1 Defining the Basic Parameter Arguments for S5-95U PLCs . . . . . . . . . . . . 1 Defining the Arguments of the Basic Parameters for the S5-95U in
Conjunction with the CP 5410 and/or CP 5430-1 . . . . . . . . . . . . . . . . . . . 1 Basic Parameter Arguments for the S5-95U in Conjunction with
. .Other SIMATIC Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Recommended Types of Data Transmission . . . . . . . . . . . . . . . . . . . . . . .1 Characteristics of the Various Types of Data Transmission . . . . . . . . . . . . 1 Types of Data Transmission for S5-95Us as Active Stations . . . . . . . . . . . 1 Types of Data Transmission for S5-95Us as Passive Stations . . . . . . . . . . 1 Distance Table for RS 485 Technology . . . . . . . . . . . . . . . . . . . . . . . . . .1 SINEC L2 Bus Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Technical Specifications of the Bus Cable . . . . . . . . . . . . . . . . . . . . . . . .
1 Distance Table for Glass Fiber Optic Cable Technology . . . . . . . . . . . . . .
1 -
9
9
10
12
12
14
15
16
17
22
23
24
26
EWA 4NEB 812 6112-02
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•
•
•
•
•
•
1.1
Factory
bus
Process
bus
Cell
bus
Field
bus
EWA 4NEB 812 6112-02
e.g.
SINEC H1
e.g.
SINEC H1
e.g. SINEC L2
e.g. SINEC L2
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S5-95U, SINEC L2
System Description
System Description
In this chapter, you will learn the following:
The applications that the SINEC L2 network is suited for
The performance capabilities that the SINEC L2 network is equipped with
The operation principle of the SINEC L2 network
The explanation of important basic terminology and parameters
The types of data transmission that are possible and which criteria you use to select them
The transmission physics that can be used
Communications in Industry
In today’s modern production control systems, the installations for process automation operate in an
information network that can be organized into several hierarchy levels, as illustrated in Figure 1-1.
Planning level
mainframe e.g. SNI MX, DEC VAX
Process supervision level
PLC AND IPC,
e.g. SIMATIC S5 and SICOMP M
Cell level
PLC AND IPC,
e.g. SIMATIC S5 and SICOMP M
Field level
sensors, actuators
Figure 1-1. Hierarchy Levels in the Computer-Integrated Automation Network
The following sections explain the different tasks of each of the hierarchy levels.
1-1
System Description
S5-95U, SINEC L2
Definitions
•
Planning Level
This is where you plan orders, production strategies and production guidelines, and where the
information from the production process is monitored.
•
Process Control Level
This is where you decide how the production will take place and how the function groups will be
coordinated.
•
Cell Level
This level receives requests from the process control level. It consists, as a rule, of assembly
cells. Each assembly cell is controlled by at least one programmable controller.
•
Field Level
This is where the field devices such as sensors and actuators are. The task of these units is to
make the exchange of information between control and technical process possible.
Communication Tasks Required from the Different Networks
The requirements for the planning and process control level networks differ from the requirements
for the cell and field level networks as follows:
•
Communication in the planning and control levels
- Large amounts of data ( range >100 bytes)
- Often no time-critical requirements
- Electromagnetic compatibility requirements matched to office environment
(with additional specific measures, also for industrial environment)
- Large network expansion
- Large number of stations
- Higher connection costs acceptable
•
Communication in the cell and field levels
- Smaller amounts of data (range <100 bytes)
- Time-critical requirements (real-time requirements)
- High electromagnetic compatibility requirements (industrial environment)
- Small network expansion
- Small number of stations (range <100)
- Low connection costs
The SINEC L2 network is optimally adapted to the requirements of the cell and field levels”.
1-2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
1.2
System Description
The SINEC L2 Local Area Network
The SINEC L2 LAN is based on the PROFIBUS Standards (DIN 19245).
PROFIBUS (PROcess FIeld BUS) is the German process and field bus standard that is defined in
the PROFIBUS Standards (DIN 19245). This standard sets up functional, electrical and mechanical
characteristics for a bit-serial field network. The purpose of these standardization efforts is to be
able to network programmable controllers and field devices of different manufacturers without
expensive adapters. Therefore, you have the ability to mix and match components from different
manufacturers, and to have them communicate with each other via the SINEC L2 network as long
as the components meet the PROFIBUS Standard. The SINEC L2 network services of the S5-95U
use part of the services defined in the PROFIBUS Standards.
In order to be able to use S5-95U programmable controllers as SINEC L2 stations, you need one of
the following two items:
•
•
The RS 485 bus terminal that connects SINEC L2 stations via the terminal cable with the bus
cable that connects the individual bus terminals with each other.
The SINEC L2 bus connector with bus cable that connects stations with each other.
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Figure 1-2 represents a bus segment using SINEC L2 bus connectors.
SINEC L2 bus connector
(terminating resistor switched off)
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Bus cable
S5-95U
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SINEC L2 bus connector
(terminating resistor
connected)
S5-95U
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S5-95U
SINEC L2
station
Figure 1-2. Bus Segment
In order to communicate, each station must observe certain rules:
•
•
•
There must be a rule for who is allowed to transmit via the common bus cable at a given time
( section 1.3 “Procedure for Accessing the Bus”).
A common language must exist between two stations
( section 1.5 “Types of Data Transmission”).
The electrical features of the stations must match each other
( section 1.6 “Bus Physics”).
EWA 4NEB 812 6112-02
1-3
System Description
1.3
S5-95U, SINEC L2
Procedure for Accessing the SINEC L2 Network
The following section discusses the basic mode of operation of the SINEC L2 network. The goal of
this section is to make you familiar with terms that you will need to configure the S5-95U as a
station and to assign parameters in the S5-95U.
An essential aspect of the network is the access procedure. On the SINEC L2, there are two types
of stations with different access rights: active stations and passive stations.
Active Stations
•
•
Are allowed, when they have the right to transmit data to other stations
Are allowed to request data from other stations
Passive Stations
•
Are allowed to exchange data with an active station only after being requested to do so by the
latter.
Whether a station is active or passive depends on the respective unit. Simple field units such as
motor control units are as a rule passive; smart units such as programmable logic controllers, on the
other hand, are active.
The S5-95U can be a passive as well as an active station on the network. This is possible by
setting parameters.
Station Address
Each station on the bus has a station address that you can assign by setting parameters.
Token / Right to Transmit
So that all active stations do not try to access the bus at the same time, an active station that is
ready to transmit has to wait until it receives the right to access the bus. The station receives this
right through a special frame, the token frame. The structure of the token frame and how its
transmission is controlled will not be discussed here (refer to the PROFIBUS Standard, DIN 19245).
It is important for you to know the following:
•
The token frame (and the permission to access) automatically goes from one station to the next
one (according to the ascending sequence of the station addresses).
•
The token frame is passed on in the logical ring: The station with the highest address passes
the token frame on to the station with the lowest address. For each active station there is one
token rotation cycle between token frame transmitting and token frame receiving .
1-4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
A network normally contains several active and several passive stations. Figure 1-3 shows a network with three active and three passive L2 stations.
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The token is passed in the logical ring
Active
stations
1
2
3
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Bus
Passive
stations
100
101
102
Figure 1-3. Bus Accessing Procedure
Explanations for Figure 1-3:
•
•
•
•
•
•
•
The token frame is passed only from an active station to another.
Stations 1, 2 and 3 are active. The token frame is passed on as follows:
1 2 3 1 2 ...
One token cycle includes passing the token three times:
1 2 3 1.
Stations 100, 101 and 102 are passive.
Stations addresses 0, 4 to 99, and 103 to 126 are not assigned.
Active stations can be assigned addresses in the range 1 to 31.
Passive stations can be assigned addresses in the range 1 to 126.
It is not absolutely necessary to assign the station addresses in ascending order.
Based on the mode of operation of the SINEC L2, two special cases can be deduced:
1) If only one station is active and all others are passive, the bus functions according to the
master-slave principle.
2) If all stations are active, a token passing procedure is present.
EWA 4NEB 812 6112-02
1-5
System Description
S5-95U, SINEC L2
Target Rotation Time
A token cycle takes a certain amount of time. You must set the maximum permissible token cycle
time as target rotation time (target rotation time in DB1, TRT parameter).
Even the transmission of large amounts of data must conform to the target rotation time set in DB1.
In order to conform to this time, the SINEC L2 uses the following principle.
Time Management of the Network
Each active station measures the time in which it was not in the possession of the token. This time
is the station’s “real” rotation time, i.e., the time used up by the other stations. The station
compares this measured time with the previously set target rotation time.
The processing of the frame to be transmitted depends on the results of this comparison and on the
priority of the message frames as follows:
The preset priority of the message frames is low for the standard connection ( chapter 4), PLC-toPLC connection ( chapter 6) and cyclic I/O ( chapter 7). Only for layer 2 access can you decide
whether the message frame is to be given high or low priority.
Possible results of the comparison between the rotation time measured (the "real" rotation time)
and the target rotation time:
1) The "real" rotation time is shorter than the target rotation time.
Result: All send and receive jobs in the queue are executed until the target rotation time has
been reached or the jobs in the queue have been processed; first the message frames
with high priority, then the message frames with low priority.
2) The "real" rotation time is longer than the target rotation time.
Result: Only one more message frame with high priority is transmitted. The message frames
with low priority are not transmitted until the "real" rotation time is shorter than the
target rotation time in the following token cycles.
This is shown in Figures 1-4 and 1-5.
1-6
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
Each station measures the “real” rotation time and calculates the difference between target rotation
time and “real” rotation time (= token hold time). During this time, a station can transmit: first,
the frames with high priority, then the frames with low priority. When the token hold time is used
up, the station must pass the token to the next station.
Target rotation time
Remaining token rotation time
Actual token rotation time used up by the
other stations
Station transmits all highpriority and low-priority
message frames
Station relinquishes
the token
Station receives
the token again
Station relinquishes the
token
Figure 1-4. Distribution of the Target Rotation Time (1)
If the transmitter has no token hold time at its disposal (see Figure 1-5), it can only transmit one
frame with high priority before is has to pass the token.
Target rotation time
Actual token rotation time used up by the other stations
Station relinquishes
the token
Station receives
the token again
Station
transmits a
high-priority
message frame
Station relinquishes
the token
Figure 1-5. Distribution of the Target Rotation Time (2)
Broadcasting
Broadcasting is when an active station sends a message frame to all active and passive stations.
Multicasting
Multicasting is when an active station sends a message frame to several active and passive
stations.
EWA 4NEB 812 6112-02
1-7
System Description
1.4
S5-95U, SINEC L2
Assigning Parameters for the L2 Interface of the S5-95U
You assign the parameters for the L2 interface in DB1, in the parameter block with block ID “SL2:”.
Irrespective of the type of data transmission you select, you must assign certain parameters (basic
parameters) in DB1. The basic parameters affect only the procedures for accessing the network
(see section 1.3) and not the communication mechanisms. DB1 has default settings for the basic
parameters that you can use or change according to the task to be performed.
KS
KS
='DB1 0BA: AI 0 ; 0BI:
';
=' ; 0BC: CAP N
CBP ';
24:
36:
48:
60:
KS
KS
KS
KS
='N
;#SL1: SLN 1 SF ';
='DB2 DW0
EF DB3 DW0 ';
=' CBR FY100
CBS FY1';
='01
PGN 1 ;# SDP: N';
72:
84:
96:
KS
KS
KS
='T 128 PBUS N ; TFB: OB13';
=' 100
; #CLP: STW MW10';
='2
CLK DB5 DW0
';
108:
120:
132:
KS
KS
KS
=' SET 3 01.10.91 12:00:';
='00
OHS 000000:00:00 ';
=' TIS 3 01.10. 12:00:00 ';
144:
156:
168:
KS
KS
KS
='
STP Y SAV Y CF 00
';
='
#SL2: TLN 0
STA AKT';
=' BDR 500
HSA 10 TRT ';
180:
192:
204:
KS
KS
KS
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 360
SF';
=' DB6 DW0
EF DB7 DW0 ';
216:
228:
KS
KS
=' KBS MB62
='# END ';
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0:
12:
KBE MB63
; ';
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The default DB1 is illustrated in Figure 1-6.
Parameters for S5-95U
functions described in the
S5-90U/S5-95U system
manual
Basic parameters
Parameters for type of data transmission
( Chapters. 4, 6, 7 and 8)
Figure 1-6. DB1 with the Default Parameters
The basic parameters and their ranges are listed and explained in the following Table.
1-8
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
*
System Description
Table 1-1. DB1 Basic Parameters
Parameter
Argument
Parameter
EWA 4NEB 812 6112-02
Significance
Block ID: SL2:
SINEC L2
TLN
STA
BDR
HSA
TRT
SET
ST
SDT 1
SDT 2
n
AKT/PAS
p
q
m
s
t
u
v
Argument
Permissible Range
n
1 to 126
AKT/PAS
p
9.6; 19.2; 93.75; 187.5;
500; 1500
q
m
s
t
u
v
1 to 126
256 to 1048320
0 to 494
50 to 4095
11 to 255
35 to 1023
Own station address
Own station status
Baud rate
Highest L2 station address on bus
Target rotation time
Set-up time
Slot time
Shortest delay time
Longest delay time
Explanation
Station address, including 1 to 31 active S5-95U
stations
AKT = active, PAS = passive
Baud rate in kBaud
Station addresses
Bit time units*
Bit time units*
Bit time units*
Bit time units*
Bit time units*
One bit time unit is the time its takes to transmit one bit (reciprocal value of Baud rate)
The arguments s, t, u, and v depend on Baud rate (see Table 1-3)
Table 1-2 shows which basic parameters are relevant for active and passive stations.
Table 1-2. Relevant Basic Parameters for the S5-95U as an Active/Passive Station
TLN
STA
BDR
HSA
TRT
SET
ST
SDT 1
SDT 2
S5-95U active
x
x
x
x
x
x
x
x
x
S5-95U passive
x
x
x
x
x
1-9
Example:
Time (in milliseconds) =
1-10
Number of bit time units
Baud rate (in kbits/s)
e.g., time=
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Baudrate
Basic
in kbaud
parameters
in bit time units
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System Description
S5-95U, SINEC L2
Rules for Setting the Basic Parameters
•
TLN 0 (default) is not allowed for the S5-95U as L2 station (TLN 0 is reserved for a programmer). You must change the value for TLN 0, otherwise the programmable controller stays
in the STOP mode.
•
Do not delete any relevant parameters, otherwise the PLC will stay in the STOP mode! Delete
any irrelevant parameters (in the case of passive S5-95Us).
•
The following basic parameters must be the same for all stations in the SINEC L2 network:
BDR, HSA, TRT, SET, ST, SDT 1 and SDT 2. Always take the basic parameters of the slowest
station! The slowest station is the station with the longest slot time in the SINEC L2 network.
Example: Communications between the CP 5410, S5-95U and CP 5430-0: preset baud rate
187.5 kbaud. The CP 5430-0 with 400 bit time units has the longest slot time
(default value). Set the basic parameters of the CP 5430-0 (187.5 kbaud) for all
stations (see Table 1-5).
Communications with S5-95Us (homogeneous S5-95U networks)
Define the arguments of the BDR, SET, ST, SDT 1 and SDT 2 basic parameters for the S5-95U
programmable controllers in DB1 (see Table 1-3).
Table 1-3. Defining the Basic Parameter Arguments for S5-95U PLCs
9.6
19.2
93.75
187.5
500
1500
SET
0
0
0
0
0
60
ST
73
76
99
170
400
1000
SDT 1
12
12
12
12
12
150
SDT 2
40
60
80
150
360
980
Define the baud rate as 187.5 kbaud in DB1. This gives the other basic parameters
as follows: SET 0 ST 170 SDT 1 12 SDT 2 150.
Bit time unit
You must specify certain parameters, e.g. the target rotation time, in bit time units. To calculate the
times in milliseconds from the bit time units, use the following formula:
1 bit time unit
= 0.104 ms
9.6 kbits/s
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
Procedure for Assigning Parameters in DB1 and the S5-95U
A default DB1 is integrated in the operating system of the S5-95U programmable controller.
DB1 contains default values for parameters, including those for data exchange by means of
SINEC L2.
Load the default DB1 in your programmer (function: transfer; source: PC; destination:
FD (PG)).
Look for the SINEC L2 parameter block. The block ID is "SL2:".
The SINEC L2 parameter block is enclosed in comment characters (#). The programmable
controller cannot interpret the SL2: parameter block in this form ( Figure 1.6). Overwrite the
comment characters that appear before the block ID (SL2:) and after the last SINEC L2
parameter with a blank.
Enter the parameters according to your specifications (for basic parameters and parameters for
the desired communications services, see chapters 3, 4, 6, 7 and 8) in one coherent block
after the block ID.
Make sure you follow the general rules for assigning parameters. Refer to the S5-90U/S5-95U
Programmable Controller System Manual, section 9.1.4.
Transfer the changed DB1 to the S5-95U. The default DB1 is overwritten with the changed
DB1.
If you now switch from STOP to RUN mode, the S5-95U accepts the new parameters. If the BF
LED lights up ( Table 3-1), you must switch from POWER OFF to POWER ON (mode selector at
RUN and backup battery inserted) on the S5-95U to transfer DB 1.
Refer to Appendix A for the following information:
•
•
•
The procedure for reading the DB1 parameter assignment error code and its interpretation
The explanations to the SET, ST, SDT 1, and SDT 2 parameters. (It is not absolutely
necessary to know the meaning of these parameters.)
The procedure for setting (calculating) the target rotation time (TRT) depending on the baud
rate (BDR)
EWA 4NEB 812 6112-02
1-11
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System Description
Baud rate
Basic
in kbaud
parameters
in bit time units
Example:
Baud rate
Basic
in kbaud
parameters
in bit time units
Example:
1-12
S5-95U, SINEC L2
Communications with the CP 5410 and/or CP 5430-1
You must set the same basic parameters BDR, SET, ST, SDT 1 and SDT 2 for the S5-95U, CP
5410 and CP 5430-1.
Define the arguments of the BDR, SET, ST, SDT 1 and SDT 2 basic parameters as shown in Table
1-4:
• for the S5-95U in DB1
• for the CP 5410
• for the CP 5430-1
Table 1-4. Defining the Arguments of the Basic Parameters for the S5-95U in Conjunction
with the CP 5410 and/or CP 5430-1
9.6
19.2
93.75
187.5
500
1500
SET
1
1
1
1
1
60
ST
80
80
190
380
1000
3600
SDT 1
12
12
12
12
12
150
SDT 2
40
60
80
150
360
980
Define the baud rate as 187.5 kbaud in DB1. This gives the other basic parameters
as follows: SET 1 ST 380 SDT 1 12 SDT 2 150.
Communications with Other SIMATIC Devices, e.g. the CP 5412 or CP 5430-0
You must set the same basic parameters BDR, SET, ST, SDT 1 and SDT 2 for the S5-95U and the
other SIMATIC device.
Define the arguments of the BDR, SET, ST, SDT 1 and SDT 2 basic parameters as shown in Table
1-5:
• for the S5-95U in DB1
• for the other SIMATIC device
Table 1-5. Basic Parameter Arguments for the S5-95U in Conjunction with
Other SIMATIC Devices
9.6
19.2
93.75
187.5
500
1500
SET
10
15
80
80
80
ST
100
170
45
45
240
400
1000
3000
SDT 1
12
15
45
80
80
150
SDT 2
60
65
200
360
360
980
Define the baud rate as 187.5 kbaud in DB1. This gives the other basic parameters
as follows: SET 80 ST 400 SDT 1 80 SDT 2 360.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
1.5
System Description
Types of Data Transmission for the S5-95U
There are different types of data transmission that allow for an optimal adaptation to specific needs.
The types of data transmission can be divided into two groups:
•
Procedure for communications between an active station and a passive station
- Cyclical I/O
- Standard connection (broadcasting from active to passive nodes only)
- Layer 2 access
Communications
active - active
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S5-95U
Communications
active - passive
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Active
stations
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Procedure for communications between active station and active station
- Standard connection
- PLC to PLC connection
- Cyclic I/O (only possible between S5-95Us)
- Layer 2 access
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•
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Bus
Passive
stations
S5-95U
Figure 1-7. Data Transmission Types
The types of data transmission differ from each other by the following:
•
•
•
•
The management
The communications process (implicit/explicit communications*)
The stations that are to be connected (active/passive stations)
The kind of data that is to be transmitted or received (e.g. single bytes or data blocks)
Depending on your application, you need to decide on the following issues:
•
•
Should the S5-95U be a passive or an active station on the bus?
Which type of data transmission do I select?
You will find the answers to these questions below.
*
implicit communication:
explicit communication:
EWA 4NEB 812 6112-02
The communication is automatic; it is not triggered in the user program.
The communication timing is triggered in the user program.
1-13
System Description
•
S5-95U, SINEC L2
Is my S5-95U to be a passive or active station on the LAN?
An active station receives the token (permission to send). When they have the token, active
stations can send data to other stations.
A passive station does not receive the token. Consequently, passive stations can only exchange
data with an active station when they are requested to do so by that station.
An S5-95U should, if possible, be a passive station on the LAN since token management on an
active station takes time and increases the LAN's response time.
•
Which type of data transmission should I choose?
You will find the answer to this question
- in Table 1-6 (recommended types of data transmission)
- in Table 1-7 (comparison of the characteristics of the various types of data transmission)
- in Tables 1-8 and 1-9 (which type of data transmission is to be recommended for which
station)
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Table 1-6. Recommended Types of Data Transmission
Type of Data
Transmission ......
Standard connection
...generally recommended for:
Porting existing programs from SINEC L1 to SINEC L2.
PLC-to-PLC connection
Communications between two active stations.
Cyclic I/O
Communications between active and passive stations.
Layer 2 access
Communications with non-SIMATIC devices which cannot exchange
data via the standard connection, PLC-to-PLC connection and cyclic
I/O.
1-14
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
*
System Description
Table 1-7 lists the characteristics of the various types of data transmission to help you select the
best type for your specific application.
Table 1-7. Characteristics of the Various Types of Data Transmission
Characteristics
Standard
Connection
Com- explicit Via send and
receive
munimailboxes
cations implicit
EWA 4NEB 812 6112-02
PLC-to-PLC
Connection
Amount of
data
1 to 242 bytes
per job
Send and
receive data
may be
located
In the flag area or In the flag area or
in the data area
in the data area
Parallel
processing of
several send
and receive
jobs
No
1 to 242 bytes per
job
Yes;
one send job and
one receive job in
parallel per
communications
partner
Cyclic I/O (ZP)
Via L2-SEND FB
and L2 RECEIVE
FB
ZP master:
Input range
0 to 128 DW
Output range
0 to 128 DW
ZP slave:
Input range
0 to 121 DW
Output range
0 to 121 DW
Non-applicable*
Layer 2 Access
Via L2-SEND FB
and L2-RECEIVE
FB
Automatic, without
being initiated by
the user program
0 to 242 bytes per
job
In the flag area or
in the data area
In the data area
Yes;
23 random jobs in
parallel
Since no job is requested by the user in the case of implicit communications
1-15
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System Description
•
•
Communications with
Broadcasting
Multicasting
*
1-16
S5-95U, SINEC L2
Table 1-8 contains the following for S5-95Us as active stations:
Recommendations for the choice of type of data transmission to suit the communications
partner
The data transmission modes with which broadcasting and multicasting are possible.
Table 1-8. Types of Data Transmission for S5-95Us as Active Stations
Type of Data Transm.
Active S5-95Us*
Standard
PLC-to-PLC Cyclic I/O
Connection Connection
Layer 2
Access
another active
S5-95U
yes
yes
possibly
no
a passive
S5-95U
no
no
yes
no
an active device of
other manufacture
no
possibly
possibly
yes
a passive device of
other manufacture
no
no
yes
yes
Send
yes
no
no
no
Receive
yes
no
no
no
Send
no
no
no
yes
Receive
no
no
no
yes
All types of data transmission (standard connection, PLC-to-PLC connection, cyclic I/O and layer 2 access) can be
programmed/used in parallel.
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
•
•
Passive S5-95Us*
Type of Data Transm.
Communications with
Broadcasting
Multicasting
*
EWA 4NEB 812 6112-02
System Description
Table 1-9 contains the following for S5-95Us as passive stations:
Recommendations for the choice of type of data transmission to suit the communications
partner
The types of data transmission with which broadcasting and multicasting are possible.
Table 1-9. Types of Data Transmission for S5-95Us as Passive Stations
Standard
PLC-to-PLC Cyclic I/O
Connection Connection
Layer 2
Access
an active
S5-95U
no
no
yes
yes
another passive
S5-95U
no
no
no
no
an active device of
other manufacture
no
no
yes
yes
a passive device of
other manufacture
no
no
no
no
Send
no
no
no
no
Receive
yes
no
no
no
Send
no
no
no
no
Receive
no
no
no
yes
All types of data transmission (standard connection, PLC-to-PLC connection, cyclic I/O and layer 2 access) can be
programmed/used in parallel.
1-17
System Description
S5-95U, SINEC L2
Selecting the Types of Data Transmission to Suit the Hardware Configuration
Except in a few cases, you will still not be able to make a final decision as to which type of data
transmission to use based solely on the information found in Tables 1-8 and 1-9: if, for example,
the amount of data to be expected is not clear.
Typical partial configurations of a SINEC L2 network are illustrated in Figures 1-8 and 1-9.
These partial configurations correspond to the situations encountered most frequently in the
industry. They are presented here according to the frequency of their occurrences (high to low). In
the chapters dealing with the individual types of data transmission (see chapters 4, 6, 7 and 8),
these typical partial configurations are the basis for the examples for assigning parameters and
programming with the S5-95U.
1. Communications between two S5-95Us
PLC-to-PLC connection
Active
stations
S5-95U
PLC-PLC
S5-95U
Bus
Passive
stations
Figure 1-8. PLC-to-PLC Connection between Active S5-95Us
Cyclic I/O (ZP)
Bus
Passive
stations
S5-95U
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Active
stations
ZP
S5-95U
Figure 1-9. Cyclic I/O between an Active and a Passive S5-95U
1-18
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
Standard connection (SC)
To be recommended only if existing programs are to be ported from SINEC L1 to SINEC L2.
Active
stations
S5-95U
SC
S5-95U
Bus
Passive
stations
Figure 1-10. Standard Connection for Porting Programs from SINEC L1 to SINEC L2
2. Communications between an S5-95U and a Device of Other Manufacture
(station that is not an S5-95U)
PLC-to-PLC connection
Active
stations
CP 5430
PLC-PLC
S5-95U
Bus
Passive
stations
Figure 1-11. PLC-to-PLC Connection between an Active CP 5430 and an Active S5-95U
Cyclic I/O (ZP)
Active
stations
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CP 5430
ZP
Bus
Passive
stations
S5-95U
Figure 1-12. Cyclic I/O between an Active CP 5430 and a Passive S5-95U
EWA 4NEB 812 6112-02
1-19
System Description
S5-95U, SINEC L2
Layer 2 access
Active
stations
CP 5410
Layer 2
S5-95U
Bus
Passive
stations
Figure 1-13. Layer 2 Access between an Active CP 5410 and an Active S5-95U
1-20
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
1.6
System Description
Physical Bus Characteristics and Installation Techniques for the
SINEC L2 Network
You can connect the S5-95U programmable controllers to SINEC L2 networks using two different
types of transmission technologies:
•
•
RS 485 transmission technology
(advantages: interference-proof due to difference signals, and economical)
Fiber optic transmission technology
(advantages: no EMC problems, electrical isolation between the stations, larger network
expansion capability as with the RS 485)
Refer to the SINEC L2/L2FO Network Manual for detailed information about transmission
technologies.
1.6.1
RS 485 Transmission Technology
Physical bus characteristics and related distances
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A SINEC L2 network consists of one or more bus segments.
Figure 1-14 shows a SINEC L2 segment with RS 485 technology.
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SINEC L2 bus connector
(terminating resistor disconnected)
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Bus cable
SINEC L2 bus connector
(terminating resistor
connected)
SINEC L2
station
Data Rate
Distance
9.6
Kbits/s
1.2 km
19.2
Kbits/s
1.2 km
93.75
Kbits/s
1.2 km
187.5
Kbits/s
1.0 km
500
Kbits/s
0.4 km
1500
Kbits/s
0.2 km
Figure 1-14. SINEC L2 Bus Segment with RS 485 Technology
You can link the bus segments by repeaters. Figure 1-15 shows a SINEC L2 network with RS 485
technology. The terminology is explained later on.
EWA 4NEB 812 6112-02
1-21
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PLC
•
•
•
Baud Rate in
Kbits/s
!
1-22
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PLC
PLC
2
3
4
5
6
7
8
9.6; 19.2; 93.75 1.2 km
2.4 km
3.6 km
4.8 km
6.0 km
7.2 km
8.4 km
9.6 km
187.5
1.0 km
2.0 km
3.0 km
4.0 km
5.0 km
6.0 km
7.0 km
8.0 km
500
0.4 km
0.8 km
1.2 km
1.6 km
2.0 km
2.4 km
2.8 km
3.2 km
1500
0.2 km
0.4 km
0.6 km
0.8 km
1.0 km
-
-
-
1
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System Description
S5-95U, SINEC L2
PLC
PLC
PLC
PLC
PLC
PLC
e.g., S5-95U programmable controller
SINEC L2 bus connector
SINEC L2 bus connector with switched-on terminating resistor
RS 485 repeater with switched-on terminating resistor
Figure 1-15. SINEC L2 Network with RS 485 Technology
The conditions for installing the network are as follows:
You can connect a maximum of 127 stations (TLN 0 is reserved for a programmer).
A maximum of 32 bus loads is permitted per segment (a bus load is either a station or a
repeater).
You can connect a maximum of 7 repeaters in series.
Table 1-7 shows the possible distances between stations calculated on the basis of the expansion
of a bus segment and of the condition specified above that a maximum of 7 repeaters is allowed
between two stations.
Table 1-10. Distance Table for RS 485 Technology
Number of Segments Connected in Series
Caution
In extensive networks, the potential difference between two stations may be more than
± 7 V. In such a case, take the necessary equipotential bonding measures, otherwise
the SINEC L2 interface will be destroyed.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
Installation Techniques
SINEC L2 Bus Connector
The SINEC L2 bus connector can be used to connect the two-wire, shielded bus cable with the
S5-95U. It is the most economical and the easiest to install of the various connectors. The bus
connector is available in the following two designs:
L2 bus connector with degree of protection IP 20 without connector for a programmer
(shown in Figure 1-16)
•
L2 bus connector with degree of protection IP 20 with connector for a programmer
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•
Figure 1-16. L2 Bus Connector with Degree of Protection IP 20 without
Connector for a Programmer
Bus Terminals
The bus terminal with RS 485 transmission technology has the same function as the SINEC L2 bus
connector. It is an alternative to the SINEC L2 bus connector. The only difference is the installation
technique. The bus terminal snaps onto the mounting rail, thus providing tension release.
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Table 1-11. SINEC L2 Bus Terminals
Bus Terminal
Cable Length (m / ft)
RS 485
1.5 / 4.9
3.0 / 9.8
6GK1 500-0AA00
6GK1 500-0AB00
RS 485/PG
1.5 / 4.9
6GK1 500-0DA00
EWA 4NEB 812 6112-02
Order Number
1-23
System Description
S5-95U, SINEC L2
Bus Cable for SINEC L2
You need a two-wire, shielded, twisted cable as bus cable, that has the technical specifications
listed in Table 1-9.
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Table 1-12. Technical Specifications of the Bus Cable
Feature
Surge impedance
Specification
approx. 135 to 160 (f= 3 - 20 MHz)
Loop resistance
115 /km
Effective capacitance
30 nF/km
Attenuation
0.9 dB/100 (f= 200 kHz)
Permissible core cross section
0.3 mm2 to 0.5 mm2
Permissible cable diameter
8 mm ± 0.5 mm
The SINEC L2 standard cable matches these specifications (order number for indoor bus cable:
6XV1 830-0AH10, for buried bus cable: 6XV1 830-3AH10).
RS 485 SINEC L2 Repeater
Use the RS 485 SINEC L2 Repeater for the following tasks:
• To link individual SINEC L2 bus segments
• To add branches to your network
• To regenerate electrical signals on the network cables.
Each repeater that is connected to a bus segment limits the maximum possible number of stations
(32) by one for this bus segment. For example, when connecting two repeaters to a segment, you
can connect only 30 stations.
Two types of RS 485 SINEC L2 repeaters are available:
•
•
For nominal voltage operation 24 V DC with external power supply (degree of protection IP 20 )
For nominal voltage operation 24 V DC with external power supply (degree of protection IP 65)
1-24
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
1.6.2
System Description
Fiber Optics Transmission Technology
Physical Bus Characteristics
Figure 1-17 shows an example of a SINEC L2FO network configured as a fiber optic star network
with cascading stars. The star centers are active star couplers AS 501.
SINEC L2FO bus terminal
S5-95U
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Duplex fiber optic cable:
glass or plastic fiber
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The technical terms will be explained in the section that follows.
Glass: max.1400 m / 4.592 ft
Plastic: min.
5 m / 16.20 ft
max. 25 m / 81 ft
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Active star coupler AS 501
Figure 1-17. SINEC L2 Network with Fiber Optic Cable
S5-95U
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You can also link two S5-95U programmable controllers point to point directly via a fiber optic
cable, i.e., without using an active star coupler AS 501, as shown in Figure 1-18.
S5-95U
Figure 1-18. Point to Point Link via a Fiber Optic Cable
EWA 4NEB 812 6112-02
1-25
1-26
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System Description
Baud Rate in
Kbits/s
S5-95U, SINEC L2
The conditions for installing the network are as follows:
• You can connect a maximum of 127 stations (TLN 0 is reserved for a programmer).
• You can connect a maximum of 16 active star couplers between two stations.
Table 1-13 shows the possible distances between to stations calculated on the basis of the values
specified in Figure 1-17 and the condition specified above that a maximum of 16 active star couplers
is allowed between two stations.
Table 1-13. Distance Table for Glass Fiber Optic Cable Technology
Number of Active Star Couplers
1
2
SINEC L2FO bus terminal SF-B
3
4
5
9.6; 19.2;
93.75; 187.5
1.4 km 2.8 km 4.2 km 5.6 km 7.0 km 8.4 km 9.8 km
500
1.4 km 2.8 km 4.2 km 5.6 km 7.0 km 8.4 km -
-
1500
1.4 km 2.8 km 4.2 km -
-
-
6
-
7
-
16
.......
23.8 km
Installation Techniques
SINEC L2FO Bus Terminal SF-B/PF-B
The SINEC L2FO Bus Terminal SF-B/PF-B converts electrical signals into optical signals for the
L2FO network and vice versa.
You can plug the optical bus terminal directly onto the 9-pin D-type female connector of the S5-95U.
There are two different versions for different fiber optic cable media:
• The SINEC L2FO bus terminal SF-B for glass fiber optic cables
• The SINEC L2FO bus terminal PF-B for plastic fiber optic cables
SINEC L2FO bus terminal PF-B
SINEC L2FO
Figure 1-19. SINEC L2FO Bus Terminal SF-B/PF-B
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
SINEC L2FO Active Star Couplers AS 501 A and 501 B
Due to the physical properties of fiber optic cables, you must configure the SINEC L2FO as a star
network. The central point of this star is the SINEC L2FO active star coupler AS 501 A or AS 501 B.
Use an active star coupler for the following tasks:
• To regenerate the optic level
• To add branches to your SINEC L2FO network (star points)
Design of the SINEC L2FO active star coupler:
• 16 plug-in modules maximum
• OPM module (Optical Plastic fiber one-port Module)
• OSM (Optical Silica fiber one-port Module)
The active star coupler is available in two versions:
RX RX RX
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Siemens
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AS 501 A with single power supply 120 V/240 V AC
AS 501 B with redundant power supply 120 V/240 V AC
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•
•
Figure 1-20. SINEC L2FO Active Star Coupler AS 501
EWA 4NEB 812 6112-02
1-27
System Description
1.6.3
S5-95U, SINEC L2
Mixed Configuration of RS 485 and Fiber Optics Transmission
Technology
You can configure networks with combined RS 485 and fiber optics transmission technologies by
using the SINEC L2FO repeater adapter.
Figure 1-21 is an example of this type of configuration.
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glass or plastic fiber
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SINEC L2FO bus terminal
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Glass: max.1400 m / 4.592 ft
Plastic: min.
5 m /16.20 ft
max. 25 m / 81 ft
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S5-95U
Bus terminal RS 485
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R
Repeater RS 485 with
SINEC L2FO repeater
adapter and terminating
resistor connected
Active star coupler AS 501
S5-95U
S5-95U
Figure 1-21. Mixed Configuration with RS 485 and FO Transmission Technology
You can also link two SINEC L2 networks of the RS 485 technology type directly via a fiber optic
cable without using an active star coupler as shown in Figure 1-22.
Terminating resistor
connected
Terminating resistor
connected
RS 485 Repeater
with SINEC L2FO
repeater adapter
RS 485-Technology
R
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RS 485 technology
FO cable
Figure 1-22. Two SINEC L2 Networks of the RS 485 Technology Linked
via Fiber Optic Cable
1-28
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
System Description
SINEC L2FO SF Repeater Adapter for L2 Repeater
The SINEC L2FO SF repeater adapter converts electrical signals of the network into optical signals
for the L2FO network.
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Design of the SINEC L2FO SF repeater adapter (see also Figure 1-23):
• You can plug the SF repeater adapter directly onto the 15-pin D-type female connector of an L2
repeater
• Connection only to a glass fiber optic cable
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Siemens
SINEC L2
Figure 1-23. SINEC L2FO SF Repeater Adapter for L2 Repeater
EWA 4NEB 812 6112-02
1-29
EWA 4NEB 812 6112-02
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2
Installation Guidelines
2.1
Basic Configuration
2.2
Installing a SINEC L2 Bus Segment . . . . . . . . . . . . . . . . . . . . . . .
2 - 2
2.3
2.3.1
2.3.2
2.3.3
Linking Bus Segments with the L2 Repeater
................
Electrical Design of the SINEC L2 Repeater RS 485 . . . . . . . . . . .
Connecting the Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Bus Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2
2
2
2.4
Routing Cables
2 - 8
EWA 4NEB 812 6112-02
..................................
.....................................
2 - 1
4
4
5
6
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Figures
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-1.
SINEC L2 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SINEC L2 Bus Connector with Degree of Protection IP 20
............
Cutting the Bus Cable, Stripping the Insulation, and Connecting
the SINEC L2 Bus Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit diagram of the SINEC L2 Bus Connector
...................
Voltage Potentials for the SINEC L2 Repeater RS 485 . . . . . . . . . . . . . . .
Connecting the Supply Voltage to the L2 Repeater . . . . . . . . . . . . . . . . . .
Connecting Two Bus Segments to Screw-Type Terminals
of the L2 Repeater (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Two Bus Segments to Screw-Type Terminals
of the L2 Repeater (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limiting Conditions for Routing Cables Indoors . . . . . . . . . . . . . . . . . . . . .
2 - 1
2 - 2
2
2
2
2
3
3
4
5
2 - 6
2 - 7
Tables
2 - 8
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
2
Installation Guidelines
Installation Guidelines
This chapter contains suggestions and rules for configuring and installing the S5-95U as a SINEC L2
bus station. The S5-90U/S5-95U System Manual discusses installation guidelines for all versions of
the S5-95U, such as mechanical installation and wiring. You should use this chapter together with
the installation guidelines discussed in the system manual.
Note
Refer to the SINEC L2/L2FO Network Manual for additional information about installation
techniques.
2.1
Basic Configuration
Figure 2-1 illustrates the main components of a SINEC L2 in RS 485 and S5-95U installation
technology. The main components are as follows:
The S5-95U programmable controllers with a SINEC L2 interface
The SINEC L2 bus connector with the bus cable
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S5-95U
L2 interface
with attached
bus connector
Programmer
interface
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Bus cable
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•
•
L2 interface
with attached
bus connector
Programmer
interface
Figure 2-1. SINEC L2 Components
Note
The bus terminal can replace the bus connector (See section 1.6.1). All of the references in section 2.2 are to the bus connector because it is the most economical and
simplest connection method.
EWA 4NEB 812 6112-02
2-1
Installation Guidelines
2.2
S5-95U, SINEC L2
Installing a SINEC L2 Bus Segment
This section explains how to install a SINEC L2 bus segment. A bus segment consists of the
following components:
•
•
•
The bus cable
The SINEC L2 bus connector or the SINEC L2 RS 485 bus terminal
The SINEC L2 station, e.g., an S5-95U programmable controllers with SINEC L2 interface
Mounting the Bus Cable on the SINEC L2 Bus Connector
You must mount the bus cable on the SINEC L2 bus connector to connect an S5-95U to the SINEC
L2 bus.
Perform the following steps to establish the connection.
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Lay out the cable and cut it.
Open the connector housing by loosening the housing screws.
Remove the housing cover.
Mount the bus cable as shown in Figure 2-3.
If required, switch on the terminating resistor.
Close the connector housing.
Now you can plug the SINEC L2 bus connector to the SINEC L2 interface of the S5-95U.
You can remove the connector without interfering with bus operation.
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9-pin Sub D connector
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Guides for the bus cable
Housing screw
Figure 2-2. SINEC L2 Bus Connector with Degree of Protection IP 20
Note
When mounting the bus cable onto the SINEC L2 bus connector, make sure the data
line connected to terminal A of one bus connector ( Figure 2.3) is also jumpered with
terminal A of the other.
Analogously, the B terminals of the two bus connectors must also be interconnected
( Figure 2.3).
2-2
EWA 4NEB 812 6112-02
220
X1
A
B
EWA 4NEB 812 6112-02
A
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X1
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Cable
shielding
approx. 12 mm
(1/2 in.)
Mounting the bus cable onto
the SINEC L2 bus connector
RXD/TXD (B)
RXD/TXD (A)
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Cable
shielding
Switch position “OFF”
(=terminator not connected)
Bare shielding must contact
the metal guide.
M 5V2 (data reference potential)
P 5V2 (supply voltage +)
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Stripping the bus cable
approx. 6 mm (1/4 in.)
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SINEC L2 Bus Connector
in the Bus Segment
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S5-95U, SINEC L2
Installation Guidelines
SINEC L2 Bus Connector
at the Begining or End of a Segment
Stripping the bus cable
approx. 6 mm (1/4 in.)
approx. 12 mm (1/2 in.)
approx. 12 mm (1/2 in.)
approx. 12 mm
(1/2 in.)
Mounting the bus cable onto
the SINEC L2 bus connector
Switch position ”ON”
(terminator connected)
A B A B
Bare shielding must
contact the metal guide.
Figure 2-3. Cutting the Bus Cable, Stripping the Insulation, and Connecting the
SINEC L2 Bus Connector
9-pin submin. D connector
(pin assignment: see Figure 3-3,
chap. 3.1)
B
Figure 2-4. Circuit diagram of the SINEC L2 Bus Connector
2-3
Installation Guidelines
S5-95U, SINEC L2
2.3
Linking Bus Segments with the L2 Repeater
2.3.1
Electrical Design of the SINEC L2 Repeater RS 485
Voltage Potentials for a Correct EMC Installation of the L2 Repeater
Bus segment 1 and bus segment 2 are electrically isolated from each other.
Bus segment 2 and the power supply have a common reference potential.
The reference potential (M terminal) and the protective ground conductor (PE terminal) are not
connected to one another.
All the shield clamps are connected to the protective ground conductor (PE terminal) at the
factory. The clamps for the power supply and bus segment 2 are connected internally to the
PE terminal. The connection between bus segment 1 and the PE terminal can be removed
(remove connecting plate between bus segments 1 and 2).
Terminal C (“C” stands for common) is not needed to connect the two-wire SINEC L2 bus
cable.
•
•
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•
•
•
Expansion
interface
Power
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Siemens
SINEC L2
Fault
Bussegment 1
Active
Expansion
interface
Bussegment 2
Fault
Active
Fault
Bit rate
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RS 485
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C A B A B C
Shield clamp connected to PE
terminal via the connecting plate
C A B A B C
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PS 24V
M L1+ M L2+ PE
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plate
Bussegment 2
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Bus terminated
Permanent internal connection
between shield clamp and PE
terminal
Internal connection between M
terminal of the power supply and C
terminal of bus segment 2
Figure 2-5. Voltage Potentials for the SINEC L2 Repeater RS 485
Grounding Methods
Installation on a standard mounting rail
Ground the standard mounting rail
Installation on a metal plate of a cabinet or on a
wall
Connect the protective ground clamp of the
repeater to the grounding rail using the
shortest cable possible (cross section
1.5 mm2, approximately AWG 16)
2-4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Installation Guidelines
Reasons for Removing the Connecting Plate
Connecting both ends of the shield of the SINEC L2 bus cable to protective ground provides good
noise suppression for high frequency ranges. It is the recommended method.
Note
Potential differences between the grounding points can cause an equalizing current to
flow on the shield connected on both sides that exceeds the capacity of the shield. In
that case, provide an equipotential bonding line.
Connecting only one end of the shield to protective ground should be the exception. It provides
damping only of low-frequency noises. Choose this method only if you cannot provide an
equipotential bonding line.
Remove the connecting plate between the shield clamps of segments 1 and 2. This opens the
connection to the protective ground conductor.
!
Warning
When the connecting plate between segment 1 and segment 2 is removed, electric
shock-hazard voltages 40 V can be present at the cable clamp of bus segment 1.
Make sure you provide appropriate contact protection.
2.3.2
Connecting the Supply Voltage
PS
24V
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To connect the supply voltage (+24 V DC) to the screw-type terminal block, use a two-wire or
three-wire, shielded cable and prepare the shielding as follows (see Figure 2-6):
- Remove the insulation completely.
- Connect the shielding to the shield clamp of the repeater using the broadest connection
surface as possible.
- Connect the shielding at the power supply end to the protective ground conductor.
Figure 2-6. Connecting the Supply Voltage to the L2 Repeater
EWA 4NEB 812 6112-02
2-5
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2-6
PLC
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Segment 1
Segment 2
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Installation Guidelines
S5-95U, SINEC L2
Connecting Bus Segments
This section explains how you connect bus segments to the L2 repeater. Note that you must
terminate a segment at both ends (i.e., when the terminators are connected, the bus is terminated).
Repeater at Segment End
Figure 2-7 shows the connection of two segments to a repeater.
Segment 1
PLC
Segment 2
PLC
PLC
Connect terminators
for bus segment 1
and for bus segment 2.
AG
Setting:
”Bus terminated”
24V
Both of the A terminals and both of
the B terminals of a bus segment
are jumpered internally (no gain).
The data signal is amplified and
regenerated only between the “bus
segment 1” and “bus segment 2”
terminal blocks.
PLC e.g., S5-95U programmable controller
SINEC L2 bus connector (terminating resistor connected)
SINEC L2 bus connector (terminating resistor disconnected)
Repeater with terminating resistors connected
Figure 2-7. Connecting Two Bus Segments to Screw-Type Terminals of the L2 Repeater (1)
EWA 4NEB 812 6112-02
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EWA 4NEB 812 6112-02
Bussegment 2
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for bus segment 2
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S5-95U, SINEC L2
Installation Guidelines
Repeater in Segment
Segment 1
Connect terminating
resistor for bus segment 1
Segment 2
”Bus terminated”
Setting:
24V
Both of the A terminals and both of
the B terminals are jumpered
internally (no gain). The data
signal is amplified and regenerated
only between the “bus segment 1”
and “bus segment 2” terminal
blocks.
Segment 2
PLC e.g., S5-95U programmable controller
SINEC L2 bus connector (terminating resistor connected)
SINEC L2 bus connector (terminating resistor disconnected)
Repeater with one terminating resistor connected
Figure 2-8. Connecting Two Bus Segments to Screw-Type Terminals of the
L2 Repeater (2)
2-7
Installation Guidelines
2.4
S5-95U, SINEC L2
Routing Cables
Routing the Bus Cable
When routing the bus cable indoors, observe the limiting conditions listed in Table 2-1 (dO = outer
diameter).
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Table 2-1. Limiting Conditions for Routing Cables Indoors
Feature
Limiting Condition
Bending radius when bending once
80 mm (3.1 in.) (10 . dO)
Bending radius when bending more than once
160 mm (6.3 in.) (20 . dO)
Permissible temperature range for routing
cables
- 5 °C to+50 °C (+23 °F to+122 °F)
Temperature range for storing and operating
- 30 °C to+65 °C (-22 °F to+149 °F)
Do not twist, stretch, or crush cables when routing them.
When routing the bus cable outdoors, observe the general regulations regarding lightning and
grounding.
Lightning protection
If cables for SIMATIC S5 devices are to be laid outdoors, both indoor and outdoor lightning
protection should be provided.
Outside buildings, cables should be laid
• in steel conduits grounded at both ends or
• in concrete cable ducts with continuous armouring.
Install these elements where the cable enters the building.
Note
Look at each system individually to determine the measures necessary to protect it
against lightning. Please address your questions to your local Siemens representative.
2-8
EWA 4NEB 812 6112-02
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3
Start-Up, Tests, and Diagnostics
3.1
Design and Mode of Operation of the Programmable Controller
3.2
START-UP Sequence
3.3
3.3.1
3.3.2
3.3.3
Starting Up a System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suggestions for Configuring and Installing the Equipment . . . . . . .
Prerequisites for Starting Up the S5-95U as a SINEC L2 Station . . .
System Startup Diagnostics and Procedures . . . . . . . . . . . . . . . .
3
3
3
3
-
5
5
6
7
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Types of FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assigning Parameters in DB1 for the FMA Services . . . . . . . . . . .
Managing of all FMA Services with FB222 . . . . . . . . . . . . . . . . . .
Reading Out a List of All Active Stations on the Network
(LAS_LIST_CREATE)
...............................
Reading the Status of Another Station (FDL_STATUS)
........
Reading Updated Bus Parameters (READ_VALUE) . . . . . . . . . . .
Reading Out Available Token Hold Time When Receiving the
Token (TIME_TTH_READ)
............................
Reading Out the Event Message (MAC_EVENT) . . . . . . . . . . . . .
3
3
3
3
3
-
10
10
12
13
14
3.4.6
3.4.7
3.4.8
3.4.9
EWA 4NEB 812 6112-02
...
................................
3 - 2
3 - 4
3 - 17
3 - 19
3 - 21
3 - 24
3 - 26
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Figures
3-1.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3
3
3
3
3
3
-
2
3
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4
6
9
3
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3
-
10
11
13
17
18
19
20
21
24
26
26
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3-8.
3-9.
3-10.
3-11.
3-12.
3-13.
3-14.
3-15.
3-16.
3-17.
S5-95U LEDs, Controls, and Interfaces of the S5-95U . . . . . . . . . . . . . . .
Operating Principle of an S5-95U with the SINEC L2 Interface . . . . . . . . . .
Pin Assignment for the SINEC L2 Interface of the S5-95U . . . . . . . . . . . . .
Start-Up Sequence at Power ON/Switch from STOP to RUN . . . . . . . . . . .
Connecting the L2 Interface of the S5-95U to the Local Area Network
....
Checklist Flowchart for Starting Up a System . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation of the Programmable Controller
with SINEC L2 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of the FMA Headers for Request and Confirmation . . . . . . . . . . .
DB1 with Parameter Settings for All FMA Services . . . . . . . . . . . . . . . . . .
Structure of the LAS_LIST_CREATE Request and Confirmation Blocks
..
LAS_LIST_CREATE Status Bytes
............................
Structure of the FDL_STATUS Request and Confirmation Blocks
.......
Status Byte of FDL_STATUS
................................
Structure of the READ_VALUE Request and Confirmation Blocks
.......
Structure of the TIME_TTH_READ Request and Confirmation Blocks
...
Sequence Principle of FMA service MAC_EVENT . . . . . . . . . . . . . . . . . .
Structure of the MAC_EVENT Indication Block
....................
Tables
3-1.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3-8.
3-9.
3-10.
Interpretation of the BF LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FMA Services Possible with the L2 Interface of the S5-95U
...........
Characteristics of FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB1 Parameters for the FMA Services . . . . . . . . . . . . . . . . . . . . . . . . . .
link_status Messages for the LAS_LIST_CREATE Confirmation
.......
link_status Messages for the FDL_STATUS Confirmation
............
link_status Messages for the READ_VALUE Confirmation
...........
Bus Parameter Block Values for a READ_VALUE Confirmation
........
link_status-Meldung für TIME_TTH_READ-Confirmation
............
Event Parameter Message in Indication Block . . . . . . . . . . . . . . . . . . . . .
3
3
3
3
3
3
3
3
3
3
-
7
12
12
13
17
19
21
22
24
27
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
3
Start-Up, Tests, and Diagnostics
Start-Up, Tests, and Diagnostics
This chapter describes how to start up an S5-95U programmable controller as a SINEC L2 local
area network station.
The first part of this chapter provides information on design and operating mode of the S5-95U with
SINEC L2 interface. It also answers the following questions:
• What is the start-up sequence of the S5-95U with SINEC L2 interface?
• How do I start up the programmable controller as a SINEC L2 station?
• What tests should I conduct during start-up?
The second part of this chapter describes how errors are indicated on the programmable controller
and which service and diagnostic functions (FMA services) are provided. Each FMA service is
described individually and is followed by programming examples.
EWA 4NEB 812 6112-02
3-1
Start-Up, Tests, and Diagnostics
.,
S5-95U, SINEC L2
,.
..
3.1
Design and Mode of Operation of the Programmable Controller
Figure 3-1 shows all the displays, operator controls and interfaces of the S5-95U
(Order No. [email protected] -
Y
D
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00
00
00
00
00
00
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1
2
8
Battery compartment
Front panel connector
m’
for digital inputs (1 32.0 to 133.7) and
for digital outputs (Q 32.0 to Q 33.7)
1
Battery low LED
4
ON/OFF switch
5
LED display for digital inputs and outputs
6
Terminals for connecting the power supply
7
Cable connector for S5-1OOU modules
Interface
8
for analog inputs (IW 40 to IW 54) and
for analog outputs (QW 40)
SINEC
L2 bus
Interface
for
9
10 SINEC L2 bus fault LED
11 RUN/STOP LEDs: The green LED indicates the “RUN” mode, the red LED
8
indicates the “STOP” mode.
12 RUN/STOP/COPY switch
13 Receptacle for an EPROM or EEPROM memory submodule
14 Interface for a PG, PC, OP or SINEC L1 bus
15 interface
for interrupt inputs (1 34.0 to 34.3) and
8
for counter inputs (NV 36, IW 38)
3
Figure 3-1. S5-95U LEDs, Controls, and Interfaces of the S5-95U
3-2
EWA 4NEB 8126112-02
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Internally
assigned
RXD/TXD (A) (data line A)
Not assigned
P 5V2 (supply
voltage+)
EWA 4NEB 812 6112-02
9
8
7
6
5
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system
9
Handling of
telegram
traffic
STEP 5 data
elements (DBs,
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2
1
8
7
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Programmable controller
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S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
Operating the Programmable Controller with a SINEC L2 Interface
Figure 3-2 shows the operating principle of a programmable controller with the SINEC L2 interface.
SINEC L2 interface
Communications
processor
5
4
3
2
1
Figure 3-2. Operating Principle of an S5-95U with the SINEC L2 Interface
Communications Processor
The communications processor handles the frame traffic via the SINEC L2 network in parallel with
the control processor.
The communications processor has the following tasks:
• Receive frames that are used for network management, e.g., token frames, via SINEC L2
- Interpret the frame
- Trigger adequate reactions
• Receive frames that contain data via SINEC L2
- Interpret the frame
- Store the data in STEP 5 data elements
• Transmit frames that are used for network management, e.g., token frames, via SINEC L2
• Transmit frames that contain data via SINEC L2
- retrieve the data from STEP 5 data elements
- pack the data into frames and transmit
SINEC L2 Interface
9-pin subminiature D female connector as specified in the PROFIBUS Standards.
M 5V2 (data reference potential)
RTS (transmit request)
RXD/TXD (B) (data line B)
Not assigned
PE (ground)
Figure 3-3. Pin Assignment for the SINEC L2 Interface of the S5-95U
3-3
Start-Up, Tests, and Diagnostics
3.2
S5-95U, SINEC L2
START-UP Sequence
In the START-UP sequence, the communications processor is activated before the START-UP OBs
are processed, as illustrated in Figure 3-2.
Operating mode switch set from STOP
to RUN; Programmer command RUN
Power recovery 1
Cold
restart
routine
Clear the process image I/O table, the
non-retentive timers, counters, flags, and
the ZP output area (if configured)
Clear the process image I/O table, the
non-retentive timers, counters, flags, and
the ZP output area (if configured)
Interpret DB1
L2 interface activation
Interpret DB1
L2 interface activation
Processing OB21
Processing OB22
red LED
lights up
STARTUP
red and
green
LEDs light
up
Enabling the outputs
Read in the PII
RUN
Processing OB1
green
LED lights
up
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Read out the PIQ
1
This is the procedure if the programmable controller was in the "RUN" mode when the power went off, if the mode
switch was still on RUN when the power was restored, and if the battery was inserted. If the battery was not inserted,
you must insert a memory submodule containing the valid blocks.
Figure 3-4. Start-Up Sequence at Power ON/Switch from STOP to RUN
When the S5-95U is in the STOP mode, only the cyclical I/O (ZP) and the programmer functions
are supported.
When the mode is switched from STOP TO RUN after a modification of the SL2 parameters in
DB1, the status bytes for SINEC L2 communication are reset on the CPU side, and running jobs are
deleted (communications processor is reset)
When the mode is switched from STOP TO RUN without a modification of the SL2 parameters
in DB1, the status bytes for SINEC L2 communication remain on the CPU side, and processing of
running jobs continues.
3-4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
3.3
Start-Up, Tests, and Diagnostics
Starting Up a System
The following section contains suggestions for configuring and starting up a system containing
programmable controllers.
3.3.1
Suggestions for Configuring and Installing the Equipment
The equipment is often used as a component in a larger system. The suggestions contained in the
following warning are intended to help you install your programmable controller safely.
Warning
•
•
•
•
•
•
•
•
•
•
Adhere to any safety and accident-prevention regulations applicable to your
situation and system.
If your system has a permanent power connection (stationary equipment) that is
not equipped with an isolating switch and/or fuses that disconnect all poles,
install either a suitable isolating switch or fuses in the building wiring system.
Connect your system to a ground conductor.
Before start-up, if you have units that operate using the main power supply,
make sure that the voltage range setting on the equipment matches the local
main power voltage.
When using a 24-V supply, make sure you provide proper electric isolation
between the main supply and the 24-V supply. Use only power supplies
manufactured according to IEC 364-4-41 or HD 384.04.41 (VDE 0100, part 410).
Fluctuations or deviations of the supply voltage from the rated value may not
exceed the tolerance limit specified in the technical data. If they do, functional
failures or dangerous conditions can occur in the electronic modules or
equipment.
Take suitable measures to make sure that programs that are interrupted by a
voltage dip or power failure resume proper operation when the power is restored.
Make sure that dangerous operating conditions do not occur even momentarily.
If necessary, force an EMERGENCY OFF.
EMERGENCY OFF devices must be in accordance with EN 60204/IEC 204
(VDE 0113) and be effective in all operating modes of the equipment. Make
certain to prevent any uncontrolled or undefined restart when the
EMERGENCY OFF devices are released.
Install power supply and signal cables so that inductive and capacitive
interference can not affect the automation functions.
Install your automation system and its operative components so as to prevent
unintentional operation.
Automation equipment can assume an undefined state in the case of a wire
break in the signal lines. To prevent this, take the proper hardware and software
safety measures when linking the inputs and outputs of the automation
equipment.
EWA 4NEB 812 6112-02
3-5
Start-Up, Tests, and Diagnostics
3.3.2
S5-95U, SINEC L2
Prerequisites for Starting Up the S5-95U as a SINEC L2 Station
We assume that the S5-95U is to be connected as a station to an already existing SINEC L2
local area network.
Minimum hardware requirement:
•
•
•
•
One S5-95U programmable controller
One EPROM/EEPROM memory submodule or a back-up battery
One bus connector or one bus terminal
One programmer with monitor
S5-95U
L2 interface with SINEC L2 bus
connector plugged in
PG
interface
PLC
PLC
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PLC
e.g., S5-95U programmable controller
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Figure 3-5 shows the location of the connectors on the S5-95U.
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SINEC L2 bus connector (terminating resistor connected)
SINEC L2 bus connector (terminating resistor disconnected)
Figure 3-5. Connecting the L2 Interface of the S5-95U to the Local Area Network
Parameter Assignments Required in DB1:
•
•
3-6
You have set the basic parameters in DB1 (see section 1.4).
You have set the parameters for the desired data transmission type(s).
Section 1.5 provides information for the selection of the data transmission types.
The specific chapters provide information for assigning parameters for each specific data
transmission type (Standard Connection: chapter 4; PLC to PLC: chapter 6; Cyclic I/O:
chapter 7; layer 2 accesses: chapter 8).
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
3.3.3
Start-Up, Tests, and Diagnostics
System Startup Diagnostics and Procedures
BF LED fault display
The BF (Bus Fault) LED lights up when
•
•
the firmware of the S5-95U detects a fault, or
if the communications processor integrated in the S5-95U is not activated.
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Table 3-1. Interpretation of the BF LED Display
Cause
Corrected DB1 is
transferred to the PLC:
BF LED
Meaning
Lights up
Communications
processor is not activated
There is no SL2
parameter block in DB1
or it is enclosed by
comment characters (#)
after STOP-RUN or
POWER OFF - POWER
ON on the PLC
Communications
processor has been
assigned the wrong
parameters
PLC remains in STOP
mode
SL2 parameter block in
DB1 contains errors
after POWER OFF POWER ON on the PLC
LAN bus fault (can only
occur if the S5-95U is
connected to the LAN)
Fatal internal fault or
basic parameters are not
consistent over the entire
network, e.g. TLN
(station address) has
been allocated twice
(LAN bus fault
Table 3-10)
after POWER OFF POWER ON on the PLC
Note
If you start up the S5-95U with the default DB1, the communications processor will not
be activated and the BF LED will light up.
EWA 4NEB 812 6112-02
3-7
Start-Up, Tests, and Diagnostics
S5-95U, SINEC L2
Test Possibilities during Start-Up
The S5-95U provides the two following types of diagnostics functions:
•
•
Functions for the general diagnostics of the SINEC L2 bus
Functions for diagnostics of the specific data transmission types (standard connection, PLC-toPLC, cyclic I/O, layer 2 services)
The functions for diagnostics of the different data transmission types are explained in the
corresponding chapters.
The functions for the general diagnostics of the SINEC L2 bus are explained in the following:
List All the Operative Active Stations of the Network
FMA service LAS_LIST_CREATE (see section 3.4.5)
Find Out the Status of a Remote Station
FMA service FDL_STATUS (see section 3.4.6)
You can find out whether another station is operative and passive or active.
Calculate the Remaining Token Hold Time When Receiving the Token
FMA service TIME_TTH_READ (see section 3.4.8)
You can find out whether the set target rotation time is optimal (TRT parameter in DB1).
Locate Errors
FMA service MAC_EVENT (see section 3.4.9)
Examples of errors that can be located using this service:
• Two stations have the token (double token).
• A station address has been assigned twice.
• There is a short-circuit on the bus cable.
Startup Procedure for the SINEC L2 station
Proceed as follows to start up the SINEC L2 station:
Start up the PLC without the SINEC L2 interface (as described in the S5-90U/S5-95U System
Manual, chapter 4).
Start up the SINEC L2 interface as shown in the flowchart of Figure 3-6.
Prerequisite: The SINEC L2 bus connector is not plugged into the interface port on the PLC.
3-8
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
Power ON and mode
selector at STOP
Program L2 interface in
DB1
LAN bus connector is
not plugged into L2
interface; switch mode
selector from STOP to
RUN (PLC cold restart)
No
DB1 contains error(s)
Switch PLC to STOP and
eliminate error in DB1
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PLC enters RUN mode?
Yes
Yes
No L2 parameter block in
DB1
Switch PLC to STOP and
enter parameter block in
DB1
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BF LED bright?
No
Connect the PLC to the
LAN (plug LAN bus
connector into L2
interface)
Yes
BF LED bright?
Basic parameters are not
consistent over the entire
network
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No
Evaluate MAC_EVENT (
section 3.4.9), then coordinate
the basic parameters of all
stations and switch the PLC
from POWER OFF to
POWER ON
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Everything OK; station
is ready for communications on the LAN
Evaluate
LAS_LIST_CREATE
( section 3.4.5)
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Possibly
Evaluate
TIME_TTH_READ
( section 3.4.8)
Figure 3-6. Checklist Flowchart for Starting Up a System
EWA 4NEB 812 6112-02
3-9
Start-Up, Tests, and Diagnostics
3.4
S5-95U, SINEC L2
FMA Services
This section provides you with the following information:
• What is meant by FMA services
• Why FMA services are used
• Which FMA services are relevant for the L2 interface of the S5-95U
• How FMA services are called up
The prerequisites for understanding this section are:
• Knowledge of STEP 5 programming
• Knowledge of how to handle the L2-SEND and L2-RECEIVE function blocks (see chapter 5)
These special functions give you access to the management services. FMA stands for Field bus
MAnagement. FMA services serve to monitor both the network and the local stations.
The FMA services make it possible to diagnose all of the network stations.
The communications processor evaluates the data collected from the stations.
3.4.1
•
•
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•
•
A service request is sent to the communications processor by means of integral function block
FB L2-SEND (FB252) .
If the FMA service requests information from another station (only FMA service FDL_STATUS)
- The communications processor scans the status of the other station .
- The other stations replies .
The system waits for a reply (confirmation) to arrive from the communications processor.
In the meantime the control processor processes the user program. This way the waiting time
does not cause any additional cycle delay.
The user program indicates that a confirmation has arrived from the communications processor.
The confirmation is fetched by means of integral function block FB L2-RECEIVE (FB253) .
Bus
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S5-95U (L2 station)
Control
processor
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•
Principle of Operation
L2 station
Communications
processor
FB L2-RECEIVE
with confirmation
Bus
monitoring
and
diagnostic
function
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STEP 5
data elements
FB L2-SEND with
service request
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Operating system
Figure 3-7. Principle of Operation of the Programmable Controller with SINEC L2 Interface
3-10
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
An FMA request consists of an 8-byte header. The confirmation, depending on the service,
consists of a maximum of 58 bytes. Bytes 0 to 7 are assigned to the confirmation header; the
requested data start with byte 8.
Figure 3-8 shows the structure of a service request and of a confirmation. The designations in the
header blocks are taken from the PROFIBUS Standards.
The FMA headers contain the following parameters. Not all parameters are completely evaluated for
all functions.
Service Request
0
com_class
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Byte
Confirmation
0
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user_id
Freely assignable ID. That ID is returned
unchanged in the confirmation.
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service_code
Type of service requested
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FMA_Confirmation=01H
(acknowledgment from firmware
following FMA_Request)
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FMA_Request=00H
(service request)
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5
irrelevant
rem_add_station*
Address of destination station
(hexadecimal)
irrelevant
6
7
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7
service_code
Type of service provided by the
layer 2 firmware
4
irrelevant
5
6
user_id
ID assigned in the FMA_Request
link_status
OK message, or error message; indicates
the success or failure of the previous
service request
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irrelevant
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com_class
8
...
irrelevant
rem_add_station*
Address of destination station
(hexadecimal)
irrelevant
Data
57
*
Required only by FMA service FDL_STATUS
Figure 3-8. Structure of the FMA Headers for Request and Confirmation
Storing the Request Header and the Confirmation Data
Store the transmit data and the received data in the flag area or the data area.
The maximum length of the confirmation (header + data) is 58 bytes. Because of the rather large
maximum amount of data contained in a confirmation, we recommend choosing only the data area.
We also recommend storing request and confirmation in the same data block.
EWA 4NEB 812 6112-02
3-11
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Start-Up, Tests, and Diagnostics
3.4.2
FMA Service
•
•
•
3-12
S5-95U, SINEC L2
The Types of FMA Services
The L2 interface of the S5-95U permits only the FMA services listed in Table 3-2.
Table 3-2. FMA Services Possible with the L2 Interface of the S5-95U
FMA Service
Function
LAS_LIST_CREATE
Read out the list of all the active stations on the network.
FDL_STATUS
Read the status of another station (e.g., “Station is passive”; or
“Station is active and in the token ring”).
READ_VALUE
Read the updated bus parameters (e.g., TLN, BDR, TRT).
TIME_TTH_READ
Read the token hold time still available when receiving the token.
MAC_EVENT
Read out an event message (e.g., “cable short-circuit”).
Some of the characteristics of the individual FMA services are summarized in Table 3-3.
Table 3-3. Characteristics of FMA Services
FMA Service
FMA Service Can Be Used if the
Characteristics S5-95U is
Active
LAS_LIST_CREATE
X
X
FDL_STATUS
X
X
READ_VALUE
X
TIME_TTH_READ
X
MAC_EVENT
X
X
FMA Request
Necessary?
Passive
X
X
X
As a prerequisite to using FMA services you must perform the following actions on the relevant
programmable controller:
Define job number ANR=200 for calling up the L2-SEND and L2-RECEIVE function blocks, and
define the location of a status byte in DB1.
Set parameters for the L2-SEND and L2-RECEIVE function blocks.
Set up a data block for the service request and for the confirmation.
Section 3.4.3 describes how to assign parameters in DB1. Chapter 5 describes how to assign
parameters for L2-SEND and L2-RECEIVE.
EWA 4NEB 812 6112-02
KS
KS
KS
='
SL2: TLN 1
STA AKT';
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
192:
204:
.
.
.
KS
KS
='SDT 1 12 SDT 2 360
='STB 200 MB200 FMAE Y
200 MBx
J/Y/N
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S5-95U, SINEC L2
Parameter
EWA 4NEB 812 6112-02
Start-Up, Tests, and Diagnostics
Assigning Parameters in DB1 for the FMA Services
The default settings of DB1 do not enable the FMA services. To activate the FMA services, set the
following parameters in DB1:
• The job number A-NR=200 (200 is reserved for FMA services)
• The location of a status byte (STB) for FB L2-SEND and FB L2-RECEIVE.
The status byte displays the status of the transmit or receive jobs and informs you of possible
errors. Section 5.4 explains in detail the structure and the evaluation of the STB. The STB
parameter settings provide you with access to all the FMA services described in section 3.6.2,
except MAC_EVENT. If you want to use MAC_EVENT, you must specifically activate this service
in DB1.
Figure 3-9 shows DB1 with parameter settings for all FMA services.
The procedures to set and modify parameters in DB1 and to transfer DB1 are described in detail in
section 1.4.
STB
200 MBx
FMAE
J/Y/N
Argument
Permissible Range
1 ... 253
';
';
Figure 3-9. DB1 with Parameter Settings for All FMA Services
Table 3-4 shows the parameters to use for FMA services.
Table 3-4. DB1 Parameters for the FMA Services
Argument
Blockkennung: SL2:
Significance
SINEC L2
Location of status byte for FMA services
Job number A-NR=200
Activate FMA service MAC_EVENT
Explanation
Job number, flag byte
Is FMA service activated?
j/J = ja; y/Y = yes; n/N = nein
3-13
Start-Up, Tests, and Diagnostics
3.4.4
S5-95U, SINEC L2
Managing of all FMA Services with FB222
FB222 (named AG95/FMA) allows you, with a minimum of programming, to initiate and monitor
FMA jobs, and to react to them. You program FB222 once for a given S5-95U. FB222 can be used
for all the FMA services.
Structure the control program for the FMA services as shown in Figure 3-10.
Is FB222 processing blocked? (Is FEHL bit set?)
yes
no
”RECEIVE viable”? (bit 0 of STB=1?)
yes
no
Was last CONF / INDI
acknowledged?
yes
Wish to send a REQUEST?
(Is REQ bit set?)
no
yes
FB L2-RECEIVE call-up
Prepare parameter assignment for
FB L2-SEND
PAFE or STB error in
FB L2-REC?
Call up FB L2-SEND
yes
Set
FEHL bit
no
Link_status
CONF
no
yes
PAFE or STB error in
FB L2-SEND?
no
INDI
Set FEHL bit
Receiving
CONF (CONF
bit is set)
Receiving
INDI (INDI
bit is set)
Reset ”REQ” bit or wait for
confirmation
End
Significance of the FB222 Parameters:
REQ
CODE
CONF
INDI
FEHL
3-14
Input parameter bit
Setting this bit triggers the request job with the service code specified in the CODE
parameter. You set the REQ bit before the FB222 call-up. FB222 resets the REQ bit after
the job has been triggered or if an error has occurred.
Input parameter word
Left byte = station address of the remote station (valid only for FMA service
FDL_STATUS, service_code 22H)
Right byte = service_code
You transfer the service code and, with service code 22H, the address of the remote
station for the request job (triggered by parameter REQ).
Output parameter bit (CONF=1 for all FMA services except MAC_EVENT)
FB222 tells you that a confirmation was received. You can evaluate the received data in
the receive area of data block DB200. FB222 sets bit CONF. You must reset bit CONF
after evaluation of the received data.
Output parameter bit (INDI=1 for FMA service MAC_EVENT)
FB222 tells you that an indication was received. You can evaluate the received data in the
receive area of data block DB200. FB222 sets bit INDI. You must reset bit INDI after
evaluation of the received data.
Output parameter bit
FB222 tells you that a parameter assignment error or a status byte error has occurred.
FB222 sets the bit. You must reset the bit after you have evaluated it.
EWA 4NEB 812 6112-02
Start-Up, Tests, and Diagnostics
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S5-95U, SINEC L2
FB222
SEGMENT 1
Explanation
0000
NAME :
DES :
DES :
AG95/FMA
REQ
CODE
I/Q/D/B/T/C: I BI/BY/W/D: BI
I/Q/D/B/T/C: I BI/BY/W/D: W
DES
DES
DES
CONF
INDI
FEHL
I/Q/D/B/T/C: Q BI/BY/W/D: BI
I/Q/D/B/T/C: Q BI/BY/W/D: BI
I/Q/D/B/T/C: Q BI/BY/W/D: BI
:
:
:
0008
000A
: C
:
DB 200
Call up DB for received data.
000C
000E
0010
: A
: BEC
:
=FEHL
End if processing of FB222 is blocked.
0012
0014
0016
: AN
: JC
:
F 200.0
=REQ
0018
001A
001C
: O
: O
: BEC
=CONF
=INDI
If STB bit ‘Receive viable’ is not set,
jump to request program section.
Did you acknowledge receiving
the last confirmation or
the last indication?
End here if no acknowledgment.
001E
0020
0022
:
: JU
FB 253
NAME : L2-REC
0024
0026
0028
A-NR :
QTYP :
DBNR :
KY O,200
KS DB
KY 0,200
002A
002C
002E
QANF :
QLAE :
: O
KF +9
KF -1
F 200.3
0030
0032
0034
0036
: O
: S
: BEC
:
0038
003A
003C
:
:
: L
003E
0040
0042
: L
: !=F
: S
0044
0046
0048
: BEC
: S
: BEU
004A
004C
004E
0050
REQ
:
:
: AN
F 255.0
=FEHL
Job number for FMA services is 200.
Receive data are in a data block,
DB number is 200,
starting with data word DW9,
“wildcard length”.
If STB bit ‘Job completed with error’ is set,
or if parameter assignment error is present,
output error code
****************************************
Confirmation or indication was received.
KH 001
Load com_class.
Check that confirmation is received.
=CONF
Code: confirmation was received
=INDI
Code: indication was received
=REQ
****************************************
Request program section
if no request job is in progress
DL 9
: BEC
(continued)
EWA 4NEB 812 6112-02
3-15
S5-95U, SINEC L2
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Start-Up, Tests, and Diagnostics
FB222 (continued)
0052
0054
0056
:
:
: L
KF +200
0058
005A
005C
: T
: L
: T
DW
0
KS DB
DW
1
005E
0060
0062
: L
: T
: L
KY 0,200
DW
2
KF +5
0064
0066
0068
: T
: L
: T
DW
3
KF +4
DW
4
006A
006C
006E
:
: L
: T
=CODE
DL
6
0070
0072
0074
:
: SRW
: T
DL
0076
0078
007A
:
: AN
: JC
F 200.1
FB 252
8
8
007C
007E
0080
NAME : L2-SEND
A-NR :
KY 0,0
QTYP ;
KS YY
0082
0084
0086
DBNR :
QANF :
QLAE :
0088
008A
008C
008E
:
:
:
:
0090
0092
0094
: BEC
:
: RB
0096
0098
:
: BE
O
O
S
RB
Explanation
Prepare indirect parameter setting.
Load parameters for FB L2-SEND in DB1.
A-NR
QTYP
DBNR
QANF
QLAE
Enter service_code in data field for the request job.
Enter station number of receiver station
in data field for request job (only for FMA service
FDL_STATUS).
STB bit ‘Job in progress‘ is not set.
Jump to L2-SEND.
Indirect parameter setting of L2-SEND.
KY O,200
KF +0
KF +0
Parameters for L2-SEND are stored in data block DB200,
starting with data word DW0.
F 200.3
F 255.0
=FEHL
=REQ
If STB bit ‘Job completed with error’ is set or
if a parameter assignment error is present,
set bit FEHL.
Reset REQ trigger bit.
=REQ
Reset REQ trigger bit.
The chapter for each particular FMA service describes how you call up FB222 from OB1.
3-16
EWA 4NEB 812 6112-02
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2
LAS_LIST_CREATE=1BH
3-7
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1
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(service request)
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0
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S5-95U, SINEC L2
3.4.5
Byte
EWA 4NEB 812 6112-02
Start-Up, Tests, and Diagnostics
Reading Out a List of All Active Stations on the Network
(LAS_LIST_CREATE)
The LAS_LIST_CREATE (List of Active Stations) service delivers a list of all active stations on
the network up to HSA.
The creation of this list does not burden the bus (local service).
Figure 3-10 shows the structure of the LAS_LIST_CREATE request and confirmation blocks.
Structure the LAS_LIST_CREATE
request block as follows:
Request Block
com_class
Freely assignable ID. That ID is
returned unchanged in the
confirmation.
user_id
Type of service requested:
service_code
irrelevant
Relevant
parameters
link_status-Meldung
The data are stored in the LAS_LIST_CREATE
confirmation block as follows:
Byte
0
1
2
HSA+8
Confirmation Block
com_class
FMA-Confirmation=01H
(acknowledgment from firmware
following FMA_Request)
ID assigned in the FMA_Request
user_id
Type of service provided:
service_code
LAS_LIST_CREATE
3
link_status
4-7
irrelevant
=
8
Status byte for station 00
9
Status byte for station 01
00H
ok (okay): Positive confirmation, LAS was read out
15H
iv (invalid): Errorr, local station is passive, service
is impossible
1BH
Status byte for station with HSA
Figure 3-10. Structure of the LAS_LIST_CREATE Request and Confirmation Blocks
link_status
Table 3-5. link_status Messages for the LAS_LIST_CREATE Confirmation
Significance
3-17
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Start-Up, Tests, and Diagnostics
7
0008
0009
.
.
0030
3-18
6
5
4
.
.
3
: L
: T
10:
11:
12:
KH = 1B00;
KY = 000,000;
KY = 000,000;
13:
14:
15:
KM = 00000001 00000100;
KM = 00000100 00000001;
KM = 00000001 00000001;
****REQUEST block****
service_code / irrelevant
irrelevant / irrelevant
irrelevant / irrelevant
****CONFIRMATION****
com_class / user_id
service_code / link_status
irrelevant / irrelevant
irrelevant / irrelevant
status station 00 / status station 01
status station 02 / status station 03
status station 04 / status station 05
16:
KM = ......
......
6:
7:
KH = 1B00;
KY = 000,000;
8:
KY = 000,000;
9:
KH = 0100;
2
1
S5-95U, SINEC L2
The status bytes of the stations are located in the confirmation block as shown in Figure 3-10.
0
0
0
0
0
0
0
0
1
1H=Station does not exist or is passive
0
0
0
0
0
0
1
0
2H=Station active, waiting for the token
0
0
0
0
0
1
0
0
4H=Station active (connected)
Figure 3-11. LAS_LIST_CREATE Status Bytes
Calling Up FB222 and Storing the Data with FMA Service LAS_LIST_CREATE
OB1
Explanation
.
.
KH 001B
FW 2
000A
000B
: SPJU
FB 222
NAME: AG95/FMA
(see section 3.4.4)
000C
000D
000E
REQ: F 1.0
CODE: FW 2
CONF: F 1.1
0010
0011
INDI: F
FEHL: F
If FMA service is required, bit must be set.
Enter type of service requested (here: 1BH)
FB222 message: confirmation was received
irrelevant
FB222 message: error occurred in PAFE or STB
1.2
1.3
Load service_code into the ACCUM and transfer to FW2
.
.
: BE
DB200
Explanation
EWA 4NEB 812 6112-02
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Structure the FDL_STATUS request
block as follows:
Byte
1
Request Block
0
com_class
FMA-Request=00H
(service request)
user_id
Freely assignable ID. That ID is returned
unchanged in the confirmation.
2
service_code
Type of service requested:
FDL_STATUS=22H
3
irrelevant
4
irrelevant
5
6
rem_add_station
Address of target station
(TLN=1 to 126)
7
irrelevant
Relevant
parameters
link_status Message
EWA 4NEB 812 6112-02
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aaaaaaaa
3.4.6
8
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S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
Reading the Status of Another Station (FDL_STATUS)
The FDL_STATUS service delivers information about the status of another station on the network
(remote service).
The data are stored in the FDL_STATUS
confirmation block as follows:
Byte
0
1
2
6
7
Confirmation Block
com_class
FMA-Confirmation=01H
(acknowledgment from firmware following
FMA_Request)
user_id
ID assigned in the FMA_Request
service_code
Type of service provided:
FDL_STATUS
=
3
link_status
4-5
irrelevant
22H
irrelevant
Address of target station
(TLN=1 to 126)
rem_add_station
irrelevant
Status byte for remote station
Figure 3-12. Structure of the FDL_STATUS Request and Confirmation Blocks
link_status
Table 3-6. link_status Messages for the FDL_STATUS Confirmation
Significance
00H
ok (okay): Positive confirmation, FDL_STATUS was read out
15H
iv (invalid): The following errors may have occurred:
- Local station is passive, service is not possible
- Target station address is own address
- Target station address is higher than 126
3-19
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Start-Up, Tests, and Diagnostics
7
0030
3-20
6
5
.
.
.
:
4
3
2
0008
0009
000A
:
:
:
000B
000C
000D
NAME:
REQ:
CODE:
AG95/FMA
F 1.0
FW 2
000E
0010
0011
CONF:
INDI:
FEHL:
F
F
F
L
T
JU
6:
7:
KH = 2200;
KY = 000,000;
8:
KY = 002,000;
9:
KH = 0100;
1
KH 0222
FW 2
FB 222
1.1
1.2
1.3
10:
11:
12:
KH = 2200;
KY = 000,000;
KY = 002,000;
13:
14:
KM = 00001000 00000000;
KM = ....
S5-95U, SINEC L2
The status information may be contained in byte 8 of the confirmation block as shown in
Figure 3-12.
0
0
0
0
0
1
0
0
0
8H= remote station is passive
0
0
0
0
0
0
0
1
1H= no acknowledgement from remote station
0
0
0
0
0
0
1
0
2H= remote, active station ready to be connected
0
0
0
0
0
1
0
0
4H= remote, active station is connected
Figure 3-13. Status Byte of FDL_STATUS
Calling Up FB222 and Storing the Data with FMA Service FDL_STATUS
OB1
Explanation
.
Load address of target station (here: TLN 2) and
service_code in ACCUM and transfer to flag word FW2
(see section 3.4.4)
If FMA service is requested, bit must be set.
Enter type of service requested (here: 22H)
FB222 message: confirmation was received
irrelevant
FB222 message: error occurred in PAFE or STB
.
.
BE
DB200
Explanation
****REQUEST block****
service_code / irrelevant
irrelevant / irrelevant
address of target station (here: 2) / irrelevant
****CONFIRMATION****
com_class / user_id
service_code / link_status
irrelevant / irrelevant
address of target station (here: 2) / irrelevant
status of remote station (here: station 2 is passive) / ...
....
EWA 4NEB 812 6112-02
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2
READ_VALUE
3-7
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Byte
Request Block
com_class
user_id
Freely assignable ID. That ID is returned
unchanged in the confirmation.
service_code
Type of service requested
irrelevant
Relevant
parameters
link_status Message
00H
EWA 4NEB 812 6112-02
=
0BH
6
7
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Structure the READ_VALUE
request block as follows:
irrelevant
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FMA_Request=00H
(service request)
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0
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3.4.7
8
9
(see Table 3-8)
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S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
Reading Updated Bus Parameters (READ_VALUE)
The READ_VALUE service allows you to read out the updated bus parameters of the local station.
The data are stored in the READ_VALUE
confirmation block as follows:
Byte
0
1
2
Confirmation Block
com_class
FMA_Confirmation=01H
(tacknowledgment from firmware following
FMA_Request)
ID assigned in the FMA_Request
user_id
service_code
Type of service provided by the firmware
READ_VALUE
3
link_status
4
irrelevant
5
irrelevant
irrelevant
=
0BH
Bus parameter block
......
....
Figure 3-14. Structure of the READ_VALUE Request and Confirmation Blocks
link_status
Table 3-7. link_status Messages for the READ_VALUE Confirmation
Significance
ok (okay): Positive acknowledgement, service was executed,
bus parameters were read out
3-21
Start-Up, Tests, and Diagnostics
S5-95U, SINEC L2
Table 3-8 lists the parameters, their meanings and their permissible range of values of the bus
parameter block for the STB display ‘Job completed without error’ (see detailed explanation of the
parameters in section 1.4).
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Table 3-8. Bus Parameter Block Values for a READ_VALUE Confirmation
Byte
Parameter
Significance
Value Range / Code
8
tln
(byte)
Address of the local station
active stations 0 to 31
passive stations0 to 126
9
sta
(word)
Type of the local station
00H=passive
01H=active
10
hsa
(byte)
Highest active station address
1 to 126
11
bdr
(byte)
Baud rate
12 to
15
0
1
2
3
4
5
=
=
=
=
=
=
9.6 KBaud
19.2 KBaud
93.75 KBaud
187.5 KBaud
500 KBaud
1.5 MBaud
trt
Target rotation time
(double word) In this time, the token should have
been passed once to every active
station.
256 to 1 048 320 bit times
16 & 17
st
(word)
Slot time
(initiator waits for reply frame)
34 to 4095 bit times
18 & 19
set
(byte)
Set-up time
0 to 494 bit times
20 & 21
STD1
(word)
Minimum station delay time
11 to 255 bit times
22 & 23
STD2
(word)
Maximum station delay time
35 to 1023 bit times
24
rtr*
(byte)
Number of call-up retries to a
remote, non-replying station
1 to 8
Default in the S5-95U: 1
25
gap*
(byte)
Gap update factor
2 to 255 in multiples of the
target rotation time
Default in the S5-95U: 20
* Bus parameters irrelevant for S5-95U user (for further explanations of the bus parameters, refer to
PROFIBUS Standards DIN 19245)
3-22
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
.
.
.
.
0030
:
EWA 4NEB 812 6112-02
Start-Up, Tests, and Diagnostics
Calling Up FB222 and Storing the Data with FMA Service READ_VALUE
OB1
Explanation
.
.
0008
0009
000A
:
:
:
000B
000C
000D
NAME:
REQ:
CODE:
AG95/FMA
F 1.0
FW 2
000E
0010
0011
CONF:
INDI:
FEHL:
F
F
F
L
T
JU
KH 000B
FW 2
FB 222
1.1
1.2
1.3
6:
KH = 0B00;
7:
8:
KH = 0000;
KH = 0000;
9:
10:
11:
KH = 0100;
KH = 0B00;
KH = 0000;
12:
KH = 0000;
13:
KY = 002,001;
14:
15:
16:
KH = 0A04;
KH = 0000
KH = 1400
17:
18:
19:
KH = 0190;
KH = 0000;
KY = 000,012;
20.
21:
22:
KH = 0190;
KY = 001,020;
KY = ..
Load service_code in ACCUM and transfer to flag word
FW2
(see section 3.4.4)
If FMA service is requested, bit must be set.
Enter type of service requested (here: 0BH)
FB222 message: confirmation was received
irrelevant
FB222 message: error occurred in PAFE or STB
.
.
BE
DB200
Explanation
****REQUEST Block****
service_code / irrelevant
irrelevant / irrelevant
irrelevant / irrelevant
****CONFIRMATION Block****
com_class / user_id
service_code / link_status
irrelevant / irrelevant
irrelevant / irrelevant
****Bus Parameter Block****
tln / sta
hsa / bdr
trt (high word)
trt (low word)
st
set
sdt 1
sdt 2
rtr / gap
..
3-23
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2
TIME_TTH_READ=23H
3-7
Relevant
parameters
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FMA-Request=00H
(service request)
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Start-Up, Tests, and Diagnostics
3.4.8
Byte
3-24
S5-95U, SINEC L2
Reading Out Available Token Hold Time When Receiving the Token
(TIME_TTH_READ)
The TIME_TTH_READ service gives you the available token hold time when receiving the token.
It is very useful in the start-up phase for setting the target rotation time.
If the available token hold time moves towards zero, you must assign a higher value to the target
rotation time. Since the available token hold time fluctuates, you should read it out several times at
short intervals and calculate its mean value.
Structure the TIME_TTH_READ
request block as follows:
The data are stored in the TIME_TTH_READ
confirmation block as follows:
Request Block
Byte
com_class
user_id
Freely assignable ID. That ID is returned
unchanged in the confirmation.
service_code
Type of service requested:
irrelevant
link_status Message
0
1
2
Confirmation Block
com_class
FMA-Confirmation=01H
(acknowledgment from firmware
following FMA_Request)
ID assigned in the FMA_Request
user_id
Type of service provided:
service_code
TIME_TTH_READ=23H
3
link_status
4-7
irrelevant
8
Remaining token hold time *
(high word)
9
Remaining token hold time *
(low word)
* The values for the remaining token hold time can be in the range of 0 to 1 048 320 bit times.
Figure 3-15. Structure of the TIME_TTH_READ Request and Confirmation Blocks
link_status
Table 3-9. link_status Messages for the TIME_TTH_READ Confirmation
Significance
00H
ok (okay):
Positive acknowledgement, rest token hold time
was read out
15H
iv (invalid):
Error, local station is passive,
service is impossible
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
.
.
.
.
0030
:
EWA 4NEB 812 6112-02
Start-Up, Tests, and Diagnostics
Calling Up FB222 and Storing the Data with FMA Service TIME_TTH_READ
OB1
Explanation
.
.
0008
0009
000A
:
:
:
000B
000C
000D
NAME:
REQ:
CODE:
AG95/FMA
F 1.0
FW 2
000E
0010
0011
CONF:
INDI:
FEHL:
F
F
F
L
T
JU
KH 0023
FW 2
FB 222
1.1
1.2
1.3
DB200
6:
7:
8:
KH = 2300;
KY = 000,000;
KY = 000,000;
9:
10:
11:
KH = 0100;
KH = 2300;
KY = 000,000;
12:
13:
14:
KY = 000,000;
KH = 0000;
KH = 0200;
Load service_code in ACCUM and transfer to flag word
FW2
(see section 3.4.4)
If FMA service is requested, bit must be set.
Enter type of service requested (here: 23H)
FB222 message: confirmation was received
irrelevant
FB222 message: error occurred in PAFE or STB
.
.
BE
Explanation
****REQUEST Block****
service_code / irrelevant
irrelevant / irrelevant
irrelevant / irrelevant
****CONFIRMATION****
com_class / user_id
service_code / link_status
irrelevant / irrelevant
irrelevant / irrelevant
remaining token hold time, high word
remaining token hold time, low word
3-25
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User program
Relevant
parameters
3-26
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Control
processor
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3.4.9
8
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Start-Up, Tests, and Diagnostics
STEP 5 data
elements
Byte
0
1
2
3-7
9
S5-95U, SINEC L2
Reading Out the Event Message (MAC_EVENT)
This FMA service is for reading out fault events. It is useful for testing during start-up.
Principle of Operation (represented in Figure 3-16)
• Errors recognized by the communications processor (e.g., double token, frame errors) are
indicated automatically. There is no need for a service request.
• A pending error indication is displayed in the status byte (STB) at job number A-NR 200.
• An error indication is fetched by means of integral FB L2-RECEIVE (FB253) via job number
A-NR 200 .
PLC
Communications
processor
Operating system
FB L2-RECEIVE
with indication
Bus
monitoring
and
diagnostics
function
Figure 3-16. Sequence Principle of FMA service MAC_EVENT
The indication consists of a maximum of 58 bytes. Bytes 0 to 7 are assigned to the header. The
error indications are stored in the sequence of their occurrence starting with byte 8 (up to 50 errors
can be recorded). Figure 3-17 shows the structure of the MAC_EVENT indication block.
The parameter values are stored in the MAC_EVENT indication block as follows:
Indication Block
com_class
FMA_Indication=02H
(event indication)
irrelevant
Type of service provided:
service_code
MAC-EVENT=20H
irrelevant
Event parameter block
(see Table 3-10)
......
Figure 3-17. Structure of the MAC_EVENT Indication Block
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Start-Up, Tests, and Diagnostics
Table 3-10 lists the possible error codes.
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Table 3-10. Event Parameter Message in Indication Block
Error Code
Significance/Cause
01H
Double token (e.g., when two logical rings
have been linked together, or bus cable has
been interrupted)
Temporary error
(repairs itself)
02H
No bus activity within monitoring time T to
(ring start-up, or temporary loss of token)
Temporary error
(repairs itself)
03H
No bus synchronization within
monitoring time T syni
Temporary error
(repairs itself)
04H
L2 processor overload
Temporary error (repairs itself)
05H
Station is connected, but its HSA is
too low compared to the other
Temporary error
(repairs itself)
06H
Receive frame problems
Temporary error (repairs itself)
21H
Transmit frame problems caused by
hardware (module) fault or faulty bus
Replace module eventually
22H
LAS useless
Temporary error (repairs itself)
23H
Station is connected, but there is
another station with the same
Temporary error
(repairs itself)
24H
Station is not connected yet, its HSA
is too low compared to the other
Change HSA in DB1
(must be the same for all stations on
25H
Temporary token loss
Temporary error (repairs itself)
26H
Frame error
Temporary error (repairs itself)
Protocol error or
protocol monitoring error
Check L2 basic parameters in DB1 for
baud rate compatibility
41H
Station is not connected yet, there is
another station with the same station
number
Change TLN parameter in DB1, switch
PLC OFF and ON
B2H
Only for active stations:
station was not accepted in the
network within the monitoring time
Check DB1 parameters and hardware
configuration and, if necessary,
change them (TRT must be the same
for all stations on the network, HSA
too low, cable short-circuit etc.) switch
PLC OFF and ON
Serious internal error
Cannot be done by the user; contact
your nearest Siemens representative
27H ... 30H
42H ... B1H, C0H ... FFH
Remedy
If temporary errors occur often in your network, check the network configuration. The errors could
be caused by hardware problems on the network, such as faulty cables, bus connectors, etc.
EWA 4NEB 812 6112-02
3-27
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Start-Up, Tests, and Diagnostics
.
000A
000B
:
NAME:
JU
FB 222
AG95/FMA
( section 3.4.4)
000C
000D
000E
REQ:
CODE:
CONF:
F 1.0
FW 2
F 1.1
0010
0011
INDI:
FEHL:
F
F
irrelevant
irrelevant
irrelevant
FB222 message: indication was received
FB222 message: error occurred in PAFE or STB
.
.
0030
3-28
:
1.2
1.3
S5-95U, SINEC L2
Calling Up FB222 and Storing the Data with FMA Service MAC_EVENT
OB1
Explanation
.
.
.
BE
DB200
Explanation
9:
10:
KH = 0200;
KH = 2000;
11:
12:
13:
KY = 000,000;
KY = 000,000;
KH = 0122;
****INDICATION-Block****
com_class / irrelevant
service_code / irrelevant
irrelevant / irrelevant
irrelevant / irrelevant
error code (see Table 3-10)
14:
KH = ....
....
EWA 4NEB 812 6112-02
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4
Data Transmission Using a Standard Connection
4.6
4.1
Features of a Standard Connection
4.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange
with Standard Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 3
4.3
Transmitting Data
...................................
4 - 5
4.4
Receiving Data
.....................................
4 - 7
4.5
Programming Example for Data Transmission via a Standard
Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 - 9
Broadcast Request (“Transmit to All”)
4 - 14
EWA 4NEB 812 6112-02
.......................
.....................
4 - 1
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Figures
4-1.
4-2.
4-3.
4-4.
4-5.
4-6.
4-7.
4-8.
4-1.
4-2.
Example of a Hardware Configuration for a Standard Connection . . . . . . . .
Functional Diagram of a Standard Connection . . . . . . . . . . . . . . . . . . . . .
DB1 with the Default Parameters for Standard Connections
...........
Structure of the Send Mailbox for a Standard Connection . . . . . . . . . . . . .
Structure of the Send Coordination Byte (CBS)
for a Standard Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of the Receive Mailbox for a Standard Connection . . . . . . . . . . .
Structure of the Receive Coordination Byte (CBR)
for a Standard Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Example of a Hardware Configuration for a Broadcast . . . . . . . . . . . . . . . .
DB1 Parameters for Standard Connections . . . . . . . . . . . . . . . . . . . . . . .
Setting Parameters for Standard Connections . . . . . . . . . . . . . . . . . . . . .
4
4
4
4
1
2
3
5
4 - 6
4 - 7
4 - 8
4 - 14
Tables
4 - 3
4 - 4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
4
Data Transmission Using a Standard Connection
Data Transmission Using a Standard
Connection
This chapter provides you with the following information:
• How this type of data transmission functions in principle
• How to set parameters for the programmable controllers
• How to program with STEP 5 for this type of data transmission (examples)
4.1
•
•
•
•
•
Features of a Standard Connection
The standard connection is particularly appropriate for:
- The transmission of large quantities of data ( 242 bytes)
- A homogeneous networking of S5-95U programmable controllers
Communication with other devices, such as with the CP 5430-1 (Order no. 6GK1 543-0AA01), is
also possible.
Active and passive L2 stations can participate on the network.
There are two ways to transmit data:
- Any active L2 station can transmit to any other active station.
- Any active L2 station can transmit simultaneously to all other connected active and passive
stations (broadcast, see section 4.6).
Active stations must have a transmitter or receiver number. This number is the L2 station
address used to address the stations. A station address must be within the range of 1 to 31. A
station address may be assigned only once on the network.
Programmable controller parameters are set in data block DB1 to enable data exchange.
Figure 4-1 shows a possible hardware configuration for the standard connections described in
section 1.5. All of the examples used in sections 4.2 through 4.5 refer to this configuration.
Active
stations
S5-95U
(PLC 1)
SC
S5-95U
(PLC 2)
...
Bus
Passive
stations
None
Standard connection (SC)
Figure 4-1. Example of a Hardware Configuration for a Standard Connection
EWA 4NEB 812 6112-02
4-1
Data Transmission Using a Standard Connection
S5-95U, SINEC L2
Principle of Operation
For this type of communication you need to define the following once:
• The send mailbox (SF) that contains the transmit data (maximum 242 bytes).
• The send coordination byte (CBS) that coordinates between user program and SINEC L2.
• The receive mailbox (RM) that contains the received data (maximum 242 bytes).
• The receive coordination byte (CBR) that coordinates between user program and SINEC L2.
The coordination bytes are stored in the flag area. The send and receive mailboxes are usually
stored in a data block. Figure 4-2 illustrates a standard connection.
Source PLC
S5-95U
Active network station
Destination PLC
aaaaaaaaaa
aaaaaaaaaa
Receive coordination
byte (CBR)
(in flag area)
aaaaaaaaaa
aaaaaaaaaa
aaaaa
Send coordination
byte (CBS)
(in flag area)
Send_Erl *
S5-95U
Passive or active network station
Error
Empf_Erl *
Send mailbox (in flag or
data area)
Error
Receive mailbox(in flag
or data area)
Byte 0
Amount of net data
Byte 0
Amount of net data
Byte 2
L2 destination address
Byte 2
L2 source address
Byte 3
.
.
.
.
Byte 243
1 to 242 bytes
net data
Byte 3
.
.
.
.
Byte 243
1 to 242 bytes
net data
Bus
*
Send_Erl = bit “transmit allowed”
Empf_Erl = bit “receive allowed”
Figure 4-2. Functional Diagram of a Standard Connection
Explanations to Figure 4-2:
If you want to transmit a message, write to the send mailbox: Enter in the send mailbox the amount
of data to transmit (amount of net data) and the receiver’s address (L2 destination address), and
then store the message (net data). Then grant the permission to transmit in send coordination byte
(set bit “Send_Erl”).
The S5-95U sends the message to the addressed receiver via the bus.
After the message has arrived at the receive mailbox, bit “Empf_Erl ” (receive allowed) is reset in
the receive coordination byte. The received data are available for evaluation in the receive mailbox.
To restore the receive readiness, empty the receive mailbox, and set bit “Empf_Erl ” in the receive
coordination byte.
4-2
EWA 4NEB 812 6112-02
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4.2
•
•
•
•
156:
168:
180:
192:
KS
KS
KS
KS
204:
216:
228:
KS
KS
KS
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S5-95U, SINEC L2
EWA 4NEB 812 6112-02
Data Transmission Using a Standard Connection
Assigning Parameters in DB1 of the S5-95U for Data Exchange with
Standard Connections
You assign the following parameters in DB1:
The location of the send mailbox (SM).
The location of the receive mailbox (RM).
The location of the send coordination byte (CBS).
The location of the receive coordination byte (CBR).
SF, EF, CBS, and CBR are used with the L2 bus of the S5-95U the same way as with the SINEC
L1 bus. Refer to chapter 14 of the S5-90U/S5-95U Programmable Controller System Manual for
additional information.
DB1 with the default parameters for standard connections is represented in Figure 4-3.
The procedure for parameterizing, modifying and transferring the DB1 parameter block is described
in detail in section 1.4.
='
#SL2: TLN 0
STA AKT';
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 360
SF';
=' DB6 DW0
=' KBS MB62
='# END ';
Parameter
EF DB7 DW0 ';
KBE MB63 ; ';
Argument
Block ID: SL2:
SF
EF
KBS
KBE
DBxDWy or MBz
DBxDWy or MBz
MBh
MBh
Argument
Permissible Range
MBh
DBx
DWy
MBz
1 to 63
2 to 255
0 to 255
0 to 254
Basic parameters (see section 1.4)
Default parameters for standard
connection
Figure 4-3. DB1 with the Default Parameters for Standard Connections
DB1 Parameters for Standard Connections
Table 4-1. DB1 Parameters for Standard Connections
Significance
SINEC L2
Parameters for Standard Connection
Location of the send mailbox
Location of the receive mailbox
Location of the send coordination byte
Location of the receive coordination byte
Explanation
Flag byte
Data block
Data word
Flag byte
4-3
156:
168:
KS
KS
='
SL2: TLN 2
STA AKT';
=' BDR 500
HSA 10 TRT ';
180:
192:
204:
KS
KS
KS
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 400
SF';
=' DB8 DW0
EF DB9 DW0 ';
216:
.
.
.
KS
4-4
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156:
KS
='
168:
180:
192:
204:
KS
KS
KS
KS
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 360
SF';
=' DB6 DW0
EF DB7 DW0 ';
216:
.
.
.
KS
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Data Transmission Using a Standard Connection
DB1 PLC 1
='
='
SL2: TLN 1
KBS MB62
KBS MB60
STA AKT';
KBE MB63
KBE MB61
';
';
S5-95U, SINEC L2
Example: Two S5-95U programmable controllers are to communicate using a standard
connection.
Table 4-2. Setting Parameters for Standard Connections
Explanation
L2 basic parameter (see section 1.4)
SF (SM) = DB6, starting with DW 0; EF (RM) =
DB7, starting with DW 0;
KBS (CBS) = MB (FB) 62; KBE (CBR) = MB
(FB) 63
DB1 PLC 2
L2 basic parameter (see section 1.4)
SF (SM) = DB8, starting with DW 0; EF (RM) =
DB9, starting with DW 0;
KBS (CBS) = MB (FB) 60; KBE (CBR) = MB
(FB) 61
The remaining sections of chapter 4 provide detailed information on how to control transmitting and
receiving data.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
4.3
Data Transmission Using a Standard Connection
Transmitting Data
There are two prerequisites for transmitting data:
•
•
The parameters for the locations of SF and CBS are set in data block DB1 (see section 4.2).
The transmit data, additional information (length of the transmit data (“net data”), and the
station address of the receiver) have been transferred to the send mailbox.
Figure 4-4 shows which information must be stored in which send mailbox location.
Example: Send mailbox in the flag area
(starting with flag byte 0)
Example: Send mailbox in the data block
(starting with data word DW0)-DL
DR
FY 0
“Net data” length in bytes
(1 to 242)
DW 0
“Net data” length
in bytes (1 to 242)
Receiver’s
address*
FY 1
*Receiver’s
DW 1
1st data item
2nd data item
FY 2
1st data item
FY 243
242nd data item
DW 121 241st data item
242nd data item
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address*
*
1 to 31 = L2 station address (active stations)
255 = Broadcasting (to all active and passive stations, see section 4.6)
Figure 4-4. Structure of the Send Mailbox for a Standard Connection
EWA 4NEB 812 6112-02
4-5
Data Transmission Using a Standard Connection
S5-95U, SINEC L2
Structure of the Send Coordination Byte (CBS)
Figure 4-5 shows the structure of the send coordination byte (CBS).
Bit
6
5
4
3
2
1
0
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
CBS
7
R
R
R
R
R
R
W/R
0:
1:
No error during the last data transmission
Error during the last data transmission
(Bits 1 to 5 describe the cause for an error in
more detail.)
0:
The destination programmable controller
acknowledges correctly.
The destination programmable controller does not
acknowledge.
1:
aaaaaaaa
aaaaaaaa
aaaa
R:
W/R:
Read only
Write / Read
Reserved bit
!
0:
1:
No error
Send mailbox error (either the DB is not available
or the send mailbox is too small), or
there is a parameter assignment error in the send
mailbox (either the “length of net data” or the “L2
destination address” is incorrect).
0:
1:
The destination PLC is in the RUN mode.
The destination PLC is in the STOP mode.
PLC STOP is recognized only if the destination
station is an S5-95U and if the connection has
been configured correctly. (It does not work with
broadcasting.)
0:
1:
No negative acknowledgment
Negative acknowledgment; either one of the
following:
- Receiver’s receive mailbox not empty
- Connection not configured on
- Bus error (hardware fault)
- Addressed station is passive
0:
1:
The L2 interface is not overloaded.
The L2 interface is overloaded.
0:
The user program can process the send mailbox.
(The operating system has no access to the send
mailbox.)
The send mailbox is enabled to transmit. (The
user program has no access to the send mailbox.)
1:
Warning
If you write bit 6 of CBS, undefined conditions can occur in the network.
Bit 6 is not available to the user.
Figure 4-5. Structure of the Send Coordination Byte (CBS) for a Standard Connection
4-6
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
4.4
Data Transmission Using a Standard Connection
Receiving Data
Prerequisites for receiving data:
You have set the parameters for the location of the receive mailbox (RM) and receive coordination
byte (CBR) in data block DB1 (see section 4.2). Figure 4-6 shows where information is stored when
it is received.
Example: The receive mailbox is in the flag
area (starting with flag byte 0)
Example: The receive mailbox is in the
data block (starting with data
word DW0)
DL
DR
FY 0
“Net data” length
in bytes (1 to 242)
DW 0
“Net data” length
in bytes (1 to 242)
Transmitter’s
address*
FY 1
Transmitter’s address*
DW 1
1st data item
2nd data item
FY 2
1st data item
DW 2
3rd data item
4th data item
FY 243
242nd data item
DW 121 241st item
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
242nd item
* 1 to 31 = L2 station address (active stations)
Figure 4-6. Structure of the Receive Mailbox for a Standard Connection
EWA 4NEB 812 6112-02
4-7
Data Transmission Using a Standard Connection
S5-95U, SINEC L2
Structure of the Receive Coordination Byte (CBR)
Figure 4-7 shows the structure of the receive coordination byte (CBR).
6
5
R
W/R
aaaaaaaa
aaaaaaaa
aaaa
R:
W/R:
4
Read only
Write / read
Reserved bit
!
3
2
1
0
R
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
7
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
Bit
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
CBR
R
0:
1:
No error
Error during the last data transmission
(Bits 2 and 5 describe the error cause in more
detail.)
0:
1:
No error
Receive mailbox error (The DB is not
available.) Received data stay stored. A new
receive request can transfer the received data
to the receive mailbox once the error has been
corrected.
0:
1:
The L2 interface is not overloaded.
The L2 interface is overloaded.
0:
The user program can access the receive
mailbox. (The operating system has no access
to the receive mailbox.)
The operating system can accept data in the
receive mailbox. (The user program has no
access to the receive mailbox.)
1:
Warning
If you write in bit 6 of CBS, the bus might enter an undefined state.
Bit 6 is not available to the user.
Figure 4-7. Structure of the Receive Coordination Byte (CBR) for a Standard Connection
4-8
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
4.5
Data Transmission Using a Standard Connection
Programming
Connection
Example
for
Data
Transmission
via
a
Standard
This section explains the structure of the control program in the following example:
Programmable controller 1 is to receive data from programmable controller 2 and to transmit data to
programmable controller 2. Refer to section 4.1 for the description of the hardware configuration.
The control program in FB1 for receiving data is structured as illustrated below.
Is the receive mailbox enabled to receive? (Bit 7 of CBR=1?)
yes
no
Evaluation of the receive mailbox
Waiting for data arrival
(Bit 7 of CBR=0)
Receive mailbox enabled to receive again (Bit 7 of CBR=1)
Jump to program section “transmit”
The control program in FB1 for transmitting data is structured as illustrated below.
Is the send mailbox enabled to transmit? (bit 7 of CBS=1?)
yes
no
Is the transmit job running? (transmit
trigger bit =1?)
yes
no
Write transmit data, data length and
address of receiver to the send mailbox
Enable send mailbox to transmit
(set bit 7 of CBS to 1)
Data transmission (PLC transmits)
Is there an error indication in CBS?
yes
no
Transmit job still pending
Acknowledge last transmission
(transmit trigger bit is not reset)
(reset transmit trigger bit )
End
EWA 4NEB 812 6112-02
4-9
Data Transmission Using a Standard Connection
S5-95U, SINEC L2
Programmable Controller 1
Proceed as follows:
Assign parameters in DB1 of programmable controller 1 as described in section 4.2.
Program the individual blocks as described in the following section.
Transfer blocks DB1, OB1, DB6, and DB7 to programmable controller 1.
Cyclical Program for Station 1 (Programmable Controller 1)
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The following was set in DB1:
• Send mailbox is in DB6 starting with data word DW0.
• Receive mailbox is in DB7 starting with data word DW0.
• Send coordination byte is in flag byte FY62.
• Receive coordination byte is in flag byte FY63.
OB1 for PLC 1
NETZWERK 1
Explanation
0000
0000
0001
0002
:
: JU
FB 1
NAME : L2-STAND
0003
ANST : F 50.0
0004
ZIEL : KF 2
0005
0006
LAEN : KF 4
: BE
Transmit to station 2.
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Transmit trigger bit, has to be set by user program, (is reset
after the transmit job is completed)
Station 2
Frame length of transmit data: 4 bytes
FB1 for PLC 1
Netzwerk 1
NAME :
L2-STAND
0000
BEZ
BEZ
BEZ
ANST
ZIEL
LAEN
E/A/D/B/T/Z: E
E/A/D/B/T/Z: D
E/A/D/B/T/Z: D
0008
0009
: U
: JC
F 63.7
= M001
000A
000B
000C
: A
:
:
DB 7
000D
000E
000F
:
:
:
0010
0011
0012
0013
:
: UN
: S
:
4-10
:
:
:
Explanation
L2 standard connection
BI/BY/W/D: BI
KM/KH/KY/KS/KF/KT/KC/KG: KF
KM/KH/KY/KS/KF/KT/KC/KG: KF
If receive mailbox enabled to receive,
jump to ‘SEND’ program section.
Open receive mailbox data block
============================================
Program section for evaluation of received data
============================================
F 63.7
F 63.7
CBR bit ”Enable receive”
Enable RM to receive
EWA 4NEB 812 6112-02
Data Transmission Using a Standard Connection
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S5-95U, SINEC L2
FB1 for PLC 1
0014
(continued)
M001:
0015
0016
0017
: ON
: O
: O
= ANST
F 62.7
F 71.2
0018
0019
001A
: JC
:
: A
= M002
001B
001C
001D
:
: LW
: T
001E
001F
0020
: LW
: T
:
= ZIEL
DR 0
0021
0022
0023
: AN
: S
: S
F 62.7
F 62.7
F 71.2
0024
0025
0026
Explanation
: R
:
M002 :
DB 6
= LAEN
DL 0
F 71.0
0027
0028
0029
: A
: AN
: AN
F 71.2
F 62.7
F 71.0
002A
002B
002C
: =
: A
: S
F 71.1
F 71.1
F 71.0
002D
002E
002F
: A
: R
:
F 62.7
F 71.0
0030
0031
0032
0033
:
:
:
:
F
F
F
=
0034
0035
0036
:
: A
: A
0037
0038
: R
: BE
A
AN
R
RB
EWA 4NEB 812 6112-02
If transmit trigger bit is 0 or
send mailbox is enabled to transmit, or
transmit disabling bit is set,
jump to edge evaluation ‘Job completed’.
Open send mailbox data block
Prepare transmit job:
Enter net data length (bytes)
and
enter destination address.
CBS bit ‘Enable transmit’
Send mailbox enabled to transmit
set transmit disabling bit,
reset edge auxiliary flag.
Edge evaluation ‘Job completed’
71.1
62.0
71.2
ANST
If job was completed and
there was no error in the last data transmission,
reset transmit disabling bit,
reset transmit trigger bit.
F 71.1
F 62.0
If job was completed and
there was an error in the last data transmission,
reset transmit disabling bit.
F 71.2
4-11
Data Transmission Using a Standard Connection
S5-95U, SINEC L2
Programmable Controller 2
Proceed as follows:
Assign parameters in the DB1 of programmable controller 2 as described in section 4.2.
Program the individual blocks as described in the following section.
Transfer blocks DB1, OB1, DB8, and DB9 to programmable controller 2.
Cyclical Program for Station 2 (Programmable Controller 2)
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The following was set in DB1:
• Send mailbox is in DB8 starting with data word DW0.
• Receive mailbox is in DB9 starting with data word DW0.
• Send coordination byte is in flag byte FY60.
• Receive coordination byte is in flag byte FY61.
OB1 for PLC 2
SEGMENT 1
Explanation
0000
0000
0001
0002
:
: JU
FB 1
NAME : L2-STAND
0003
ANST : F 50.0
0004
ZIEL : KF 1
0005
0006
LAEN : KF 4
: BE
Transmit to station 1.
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Transmit trigger bit, has to be set by user program, (is reset
after the transmit job is completed)
Station 1
Frame length of transmit data: 4 bytes
FB1 for PLC 2
SEGMENT 1
NAME :
L2-STAND
DES
DES
DES
ANST
ZIEL
LAEN
I/Q/D/B/T/Z: E
I/Q/D/B/T/Z: D
I/Q/D/B/T/Z: D
0008
0009
: A
: JC
F 61.7
= M001
000A
000B
000C
: A
:
:
DB 9
000D
000E
000F
:
:
:
0010
0011
0012
0013
:
: AN
: S
:
4-12
:
:
:
Explanation
0000
L2 standard connection
BI/BY/W/D: BI
KM/KH/KY/KS/KF/KT/KC/KG: KF
KM/KH/KY/KS/KF/KT/KC/KG: KF
If receive mailbox enabled to receive,
jump to ‘SEND’ program section.
Open receive mailbox data block
============================================
Program section for evaluation of received data
============================================
F 61.7
F 61.7
CBR bit ‘Enable receive’
Enable RM to receive
EWA 4NEB 812 6112-02
Data Transmission Using a Standard Connection
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S5-95U, SINEC L2
FB1 for PLC 2
(continued)
0014
0015
0016
M001:
: ON
: O
0017
0018
0019
: O
: JC
:
F 71.2
= M002
001A
001B
001C
001D
: C
:
: LW
: T
DB 8
001E
001F
0020
: LW
: T
:
= ZIEL
DR 0
0021
0022
0023
: AN
: S
: S
F 60.7
F 60.7
F 71.2
0024
0025
0026
: R
:
M002 :
= ANST
F 60.7
= LAEN
DL 0
F 71.0
0027
0028
0029
: A
: AN
: AN
F 71.2
F 60.7
F 71.0
002A
002B
002C
: =
: A
: S
F 71.1
F 71.1
F 71.0
002D
002E
002F
: A
: R
:
F 60.7
F 71.0
0030
0031
0032
: A
: AN
: R
F 71.1
F 60.0
F 71.2
0033
0034
0035
: RB
:
: A
= ANST
0036
0037
0038
: A
: R
: BE
F 60.0
F 71.2
F 71.1
Explanation
If transmit trigger bit is 0, or
send mailbox is enabled to transmit, or
transmit disabling bit is set,
jump to edge evaluation ‘Job completed’.
Open send mailbox data block
Prepare transmit job:
Enter net data length (bytes)
and
enter destination address.
CBS bit ‘Enable transmit’
Send mailbox enabled to transmit
set transmit disabling bit,
reset edge auxiliary flag.
Edge evaluation ‘Job completed’
If job was completed and
there was no error in the last data transmission,
reset transmit disabling bit,
reset transmit trigger bit.
If job was completed and
there was an error in the last data transmission,
reset transmit disabling bit.
Switch both programmable controllers from STOP to RUN. The programmable controllers
accept the parameter values of both DB1 data blocks.
Check the data transmission. This is done best with a programmer: Connect each programmable controller to a programmer and display the data blocks and the coordination bytes.
Refer also to section 3.3 “Starting up a System”.
Appendix E gives you information on cycle delay times in the programmable controllers due to data
transmission.
EWA 4NEB 812 6112-02
4-13
Data Transmission Using a Standard Connection
4.6
S5-95U, SINEC L2
Broadcast Request (“Transmit to All”)
“Broadcasting” means that one active station transmits a message to all active and all passive
stations.
Active
stations
S5-95U
SC
(Sender)
S5-95U
(receiver)
...
SC
Bus
Passive
stations
S5-95U
(receiver)
...
Broadcasting
Figure 4-8. Example of a Hardware Configuration for a Broadcast
The sender's prerequisites for broadcast transmission are as follows:
•
•
•
The parameters for the locations of CBS and SF are set in data block DB1 (see section 4.2).
Send data and additional information are transferred to the send mailbox.
The receiver’s address “255” (hexadecimal) for a broadcast is entered in byte 2 of the send
mailbox (see section 4.3).
The receiver’s prerequisites for broadcast transmission are as follows:
•
•
In an active station: At least CBR and RM are set up.
In a passive station: Only CBR and RM are set up.
Note
Bits 1, 3, and 4 in the CBS (see section 4.3) are not relevant for broadcast jobs
because the receiver does not acknowledge broadcast transmissions.
4-14
EWA 4NEB 812 6112-02
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5
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
5.1
Parameters for L2-SEND and L2-RECEIVE
5.2
Direct and Indirect Parameter Settings for the L2 Function Blocks
5.3
Parameter Assignment Error Byte (PAFE)
5.4
Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EWA 4NEB 812 6112-02
.................
..................
5 - 2
.
5 - 4
5 - 5
5 - 6
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Figures
5-1.
5-2.
5-3.
5-1.
5-2.
5-3.
5-4.
5-5.
5-6.
5-7.
5-8.
Information Transport with the FB L2-SEND and FB L2-RECEIVE
Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of the PAFE Parameter Assignment Error Byte
.............
Structure of the Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A List of Parameters Used by L2-SEND (FB252) . . . . . . . . . . . . . . . . . . .
A List of Parameters Used by L2-RECEIVE (FB253) . . . . . . . . . . . . . . . . .
Allocation of the Job Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Formal Operands: Significance of the Parameters Used with
L2-SEND (FB252) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Formal Operands: Significance of the Parameters Used with
L2-RECEIVE (FB253) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
An Example of Direct Parameter Settings for the L2-SEND Function Block .
An Example of Indirect Parameter Settings for the L2-SEND Function Block
Error Codes in the Status Byte (Bits 4 to 7) . . . . . . . . . . . . . . . . . . . . . . .
5 - 1
5 - 5
5 - 6
Tables
5 - 2
5 - 2
5 - 2
5 - 3
5
5
5
5
3
4
4
7
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
5
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
Integral Standard Function Blocks L2-SEND and
L2-RECEIVE
The L2-SEND (FB252) and L2-RECEIVE (FB253) standard function blocks are already integrated in
the S5-95U operating system.
FB L2-SEND transports information from the control processor of the S5-95U to the
communications processor of the S5-95U.
FB L2-RECEIVE transports information from the communications processor of the S5-95U to the
control processor of the S5-95U ( section 5.1).
S5-95U
LAN bus
Communications
processor
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L2-SEND
L2-RECEIVE
SINEC L2
interface
.
..
..
..
..
.
Figure 5-1. Information Transport with the L2-SEND and L2-RECEIVE Function Blocks
The standard function blocks manage the following communications ( Figure 5-1) services:
•
•
•
•
Transmitting and receiving by means of PLC to PLC connections ( chapter 6)
Service functions and diagnostic functions with FMA services ( chapter 3)
Fetching the ZP slave life list with cyclic I/O ( chapter 7)
Transmitting and receiving via layer 2 access ( chapter 8)
Standard function blocks offer you the following advantages:
•
•
•
•
•
They do not occupy any memory locations in the user memory.
They have short run times.
They do not require any STEP 5 timers or STEP 5 counters.
Their processing cannot be interrupted (e.g., by interrupts).
They can be called up from any other block (OB, PB, FB, SB).
Cycle delay times in the programmable controllers caused by standard function blocks are
described in Appendix E.
EWA 4NEB 812 6112-02
5-1
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Integral Standard Function Blocks L2-SEND and L2-RECEIVE
5.1
Designation
Designation
Job Number
1 to 31
33 to 54, 64
133 to 154, 164
5-2
S5-95U, SINEC L2
Parameters for L2-SEND and L2-RECEIVE
Function blocks L2-SEND and L2-RECEIVE use the parameters listed in Tables 5-1 and 5-2.
Table 5-1. A List of Parameters Used by L2-SEND (FB252)
Significance
A-NR
:
Job number
QTYP
:
Type of data source
DBNR
:
Data block number
QANF
:
Data block start address of source data area
QLAE
:
Length of source data
Table 5-2. A List of Parameters Used by L2-RECEIVE (FB253)
Significance
A-NR
:
Job number
ZTYP
:
Type of data destination
DBNR
:
Data block number
ZANF
:
Data block start address of destination data area
ZLAE
:
Length of destination data
The job number specifies the following:
• The type of communication service (as listed in Table 5-3)
• With PLC to PLC connection:
- in L2-SEND, to which station the data are transmitted
- in L2-RECEIVE, from which station the received data were transmitted.
• With layer 2 accesses
- in L2-SEND, which layer 2 access is used for sending data
- in L2-RECEIVE, which layer 2 access is used for receiving data
Table 5-3 Allocation of the Job Numbers
Allocated to Type of Communication
Transmitting and receiving via PLC to PLC connections
Transmitting the request and fetching the confirmation using the layer 2
access
Fetching the indication when using layer 2 access
200
Service and diagnostics functions with FMA services
202
Fetching the ZP slave life list for ZP master with cyclic I/O
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
EWA 4NEB 812 6112-02
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
The formal operands that have to be specified when the standard function blocks are used are
explained in Tables 5-4 and 5-5.
Table 5-4. Formal Operands: Significance of the Parameters Used with L2-SEND (FB 252)
Parameter
Significance
A-NR:
KY
x,
y
Parameter x is irrelevant. The y parameter represents the job
number; y = 1 to 31, 33 to 54, 64, 200
QTYP:
KS
xx
xx=DB, FY for a direct parameter setting
xx=YY for an indirect parameter setting
DBNR:
KY
0,
y
The data block number containing the data to be transmitted
y = 2 to 255 (y is irrelevant if the start of the source data area
QANF is in the flag area)
QANF:
KF
x
QLAE:
KF
x
Parameter
A-NR:
KY
x, y
ZTYP:
KS
xx
DBNR:
KY
0, y
ZANF:
KF
x
ZLAE:
KF
x
Start of the source data area (DW number or FY number)
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
Length of the source data area
(DW: words; FY: bytes)
x = 1 to 125 (DW) or
x = 1 to 250 (FY)
Table 5-5. Formal Operands: Significance of the Parameters Used
with L2-RECEIVE (FB 253)
Significance
Parameter x is irrelevant. The y parameter represents the job
number; y = 1 to 31, 33 to 54, 164, 133 to 154, 164, 200, 202
xx=DB, FY for a direct parameter setting
xx=YY for an indirect parameter setting
The data block number to contain the received data
y = 2 to 255 (y is irrelevant if the start of the destination data area
ZANF is in the flag area)
Start of the destination data area (DW number or FY number)
x = 0 to 255 (DW) or
x = 0 to 254 (FY)
Length of the destination data area (DW or FY)
(DW: words; FY: bytes)
x = -1 “wildcard length”
As much data is accepted as the transmitter delivers.
5-3
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
5.2
S5-95U, SINEC L2
Direct and Indirect Parameter Settings for the L2 Function Blocks
You can set parameters either directly or indirectly for the L2-SEND and L2-RECEIVE function
blocks.
The advantage of indirect parameter settings: you can assign new parameters to the standard
function blocks from the STEP 5 program. The parameters are then located as a parameter list in a
data block.
Table 5-6 is an example of direct parameter settings for the L2-SEND function block. Table 5-7 is
an example of indirect parameter settings for the L2-SEND function block.
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Table 5-6. An Example of Direct Parameter Settings for the L2-SEND Function Block
Direct Parameter Settings
JU
NAME
:
FB 252
L2-SEND
A-NR
QTYP
DBNR
:
:
:
KY 0,5
KS DB
KY 0,9
QANF
QLAE
:
:
KF +10
KF +33
Explanation
Data are sent to station 5.
The data to be sent are located
in data block DB9
starting with data word DW10.
Net data length is 33 words.
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Table 5-7. An Example of Indirect Parameter Settings for the L2-SEND Function Block
Indirect Parameter Settings
5-4
JU
NAME
:
FB 252
L2-SEND
A-NR
QTYP
DBNR
:
:
:
KY 0,0
KS YY
KY 0,10
QANF
QLAE
:
:
KF +14
KF +0
DB
10
DW 14
KY 0,17
DW 15
DW 16
DW 17
KS DB
KY 0,8
KF +22
DW 18
KF +45
Explanation
Irrelevant
ID for indirect parameter assignment
The parameters for the job are located in data block
DB10 beginning with data word DW14.
Irrelevant
Data are sent to station 17.
The data to be sent are located in data block DB8
starting with data word DW22.
Net data length is 45 words.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
5.3
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
Parameter Assignment Error Byte (PAFE)
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The parameter assignment error byte (PAFE) indicates errors made when assigning parameters
for L2-SEND and L2-RECEIVE. Flag byte 255 is reserved as the parameter assignment error byte.
You can scan the PAFE in the control program and program the reactions to errors that occur.
Flag byte 255
Error codes
6
5
4
3
2
1
0
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7
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0: - No parameter assignment error
1: - Parameter assignment error
0 - Irrelevant
1 - Irrelevant
2 - Area does not exist (DB does not exist / is not
permitted)
3 - Area is too small
4 - Overload, access to L2 interface is not possible
5 - Incorrect contents of status byte (user access to the
status byte is not permitted)
6 - Source or destination parameters not permitted for
L2-SEND/L2-RECEIVE
7 - Irrelevant
8 - Irrelevant
9 - Irrelevant
A - Irrelevant
B - Parameter assignment error (length incorrect)
C - Destination address = source address
D - Programmable controller is a passive station, job is
not possible
E - No parameters assigned for the job
F - Job number not permissible
irrelevant bits
Figure 5-2. Structure of the PAFE Parameter Assignment Error Byte
Note
It is possible to overwrite PAFE in the STEP 5 program. We do not recommend that you
do if you want to keep programming clear. After call-up of L2-SEND or L2-RECEIVE,
PAFE may have been written to with error indications so you need to scan it in the STEP
5 program.
EWA 4NEB 812 6112-02
5-5
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e.g., flag byte 200
7
*
!
5-6
6
5
4
Explanations of
the error display:
see Table 5-8
3
2
1
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Integral Standard Function Blocks L2-SEND and L2-RECEIVE
Status byte (STB)
0
7
6
5
4
3
S5-95U, SINEC L2
Status Byte
The status byte (STB) is used to control the data transmission using L2-SEND and L2-RECEIVE.
You need to evaluate the status byte in order to monitor the data exchange between the control
processor of the S5-95U and the communications processor of the S5-95U. The status byte
indicates errors and the status of a job and informs you about data management.
Define the location of the status byte in DB1..
e.g., flag byte 201
Length byte (LB)*
2
1
0
Indicates for FB L2-RECEIVE the quantity of data in bytes
( 1 to 242) that have been copied to the destination area
(without leading sign)
Job completed
with error
Job completed
without error
Job in progress
Receive viable
(i.e., you can fetch
data with
L2-RECEIVE)
With FBs L2-RECEIVE, the flag byte immediately following the
status byte is reserved for the length byte.
It is not available to the user.
Figure 5-3. Structure of the Status Byte
Warning
If you write in the status byte, undefined states can occur during job processing.
You may only read the status byte.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Integral Standard Function Blocks L2-SEND and L2-RECEIVE
Note
In the case of the FMA services ( section 3.4), the error codes 7hex to Chex in bits 4 to
7 of the status byte do not exist for L2-RECEIVE.
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Table 5-8. Error Codes in the Status Byte (Bits 4 to 7)
Value of Bits 4 to 7
in STB
(hexadecimal)
Significance of the Error Codes
0
No error
4
Overload, access to L2 interface is not possible
7
Local medium busy
No data buffer is available for processing the job.
Remedy • Retrigger the job after a waiting period.
• Reconfigure to decrease the L2 load.
8
Remote medium busy
No input buffer is available for the job on the remote programmable
controller (still occupied by the previous job input).
Remedy: • Use L2-RECEIVE to accept the "old" data in the remote
programmable controller.
• Repeat the transmit job in the transmitting programmable
controller.
9
Remote error
The remote programmable controller acknowledges the job negatively,
for example because the SAP assignment is incorrect ( Appendix B).
Remedy: Reconfigure (correct) the connections.
A
Connection error
The transmitting programmable controller or the receiving
programmable controller is not connected to the bus.
Remedy: Switch the systems on or connect the systems and test the
bus connections.
C
The remote programmable controller is in the STOP mode
Recognition of PLC STOP works only with the PLC to PLC connection
and then only if the destination station is an S5-95U and if the
destination station was configured properly.
EWA 4NEB 812 6112-02
5-7
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6
Data Transmission Using PLC-to-PLC Connections
6.3
6.1
Features of the PLC-to-PLC Connections . . . . . . . . . . . . . . . . . . .
6 - 1
6.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange
with PLC-to-PLC Connections . . . . . . . . . . . . . . . . . . . . . . . . . .
6 - 4
Programming Example for Data Transmission via PLC-to-PLC
Connections Using Standard Function Blocks . . . . . . . . . . . . . . . .
6 - 6
EWA 4NEB 812 6112-02
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Figures
6-1.
6-2.
6-3.
6-1.
6-2.
6-3.
Example: Hardware Configuration for PLC-to-PLC Connection . . . . . . . . . .
Functional Diagram of a PLC-to-PLC Connection . . . . . . . . . . . . . . . . . . .
Diagram: Data Transmission Using PLC-to-PLC Connections . . . . . . . . . .
Configuring Job Number n in DB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB1 Parameters for PLC-to-PLC Connections . . . . . . . . . . . . . . . . . . . . .
Assigning Parameters for PLC-to-PLC Connections . . . . . . . . . . . . . . . . .
6 - 1
6 - 2
6 - 4
Tables
6 - 4
6 - 5
6 - 5
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
6
Data Transfer with PLC-to-PLC Connections
Data Transmission Using PLC-to-PLC
Connections
This chapter provides you with the following information:
• How this type of data transmission functions in principle
• How to communicate with the CP 5430 communications processor
• How to set parameters for the programmable controllers
• How to program with STEP 5 for this type of data transmission (examples)
6.1
•
•
•
•
•
•
•
•
•
•
Features of the PLC-to-PLC Connections
You use PLC-to-PLC connections to connect active stations.
You can set parameters in DB1 for a maximum of 31 PLC-to-PLC connections.
You use the integral function blocks L2-SEND and L2-RECEIVE to communicate via PLC-to-PLC
connection. L2-SEND and L2-RECEIVE are described in detail in chapter 5.
For L2-SEND you need to specify the following parameters:
- The destination programmable controller as the job number
The job number is identical to the destination station address on the SINEC L2 network.
- The data to transmit
For L2-RECEIVE you need to specify the following parameter:
- The source programmable controller as the job number.
(The job number is identical to the source station address on the SINEC L2 network.)
Please note that
- a specific status byte ‘Transmit’ STBS belongs to L2-SEND and each of the job numbers
- a specific status byte ‘Receive’ STBR belongs to L2-RECEIVE and each of the job numbers
You can transmit or receive a maximum of 242 bytes of data per job.
You can transmit in parallel to several stations.
You can receive in parallel to several stations.
You can transmit faster using PLC-to-PLC connections than using standard connections.
Figure 6-1 shows a possible hardware configuration (
section 1.5) for the PLC-to-PLC
connections. All examples in section 6.3 refer to PLC 1 and PLC 2 in this configuration.
Active
stations
CP 5430
PLC-PLC
S5-95U
(PLC 1)
PLC-PLC
S5-95U
(PLC 2)
...
Bus
Passive
stations
none
PLC to PLC connection
Figure 6-1. Example: Hardware Configuration for PLC-to-PLC Connection
EWA 4NEB 812 6112-02
6-1
Data Transfer with PLC-to-PLC Connections
S5-95U, SINEC L2
Principle of Operation
Source PLC
e.g., S5-95U
Active network station
o.k. to transmit?
e.g., S5-95U
Active network station
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Status byte/RECEIVE
to source (A-NR)
(in the flag area)
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Status byte/SEND
to destination (A-NR)
(in the flag area)
Destination PLC
no
Receive viable?
yes
L2-SEND FB
yes
L2-RECEIVE FB
Destination(A-NR =ˆ TLN)
Source (A-NR =TLN)
ˆ
Data
Data
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Net data
1 to 242 bytes
DB 60
DB 61
DB 62
DB 63
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DB 50
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no
Net data
1 to 242 bytes
LAN
bus
Figure 6-2. Functional Diagram of a PLC-to-PLC Connection
Explanations to Figure 6-2:
When there are no more jobs running on the PLC-to-PLC connection, the 'send' status byte
indicates that it is okay to transmit. L2-SEND is called up from the user program. L2-SEND receives
the following information from the parameter assignment:
• where to send the data (job number)
• where the net data are stored
The net data are transmitted to the addressed receiver via the network. At the receiver, a bit in
status byte ‘Receive’ indicates that the data arrived. The receiver can fetch the data by means of
L2-RECEIVE.
6-2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transfer with PLC-to-PLC Connections
Communicating with the CP 5430 Communications Processor
If you want to connect other SIMATIC S5 controllers (S5-115U, S5-135U, S5-155U) to the network,
you can use the CP 5430 communications processor (see Figure 6-1).
You configure the desired PLC-to-PLC connection in DB1 of the S5-95U, and program function
blocks L2-SEND and L2-RECEIVE. For this PLC-to-PLC connection, configure the default
connection in the CP 5430. The CP 5430 can communicate with the S5-95U using its data handling
blocks SEND and RECEIVE.
When making entries in the COM 5430-VERB editor screen, note the following:
•
•
•
You must enter the job number configured in DB1 of the S5-95U in the SEND/RCV-ANR (local
parameters) column. The job number corresponds to the station address of the partner station
( section 6.2).
SAP (local parameter) = station address of the partner station + 1 ( Appendix B for an
explanation and definition of the SAP numbers in the case of the S5-95U)
The "Remote Parameters" columns are irrelevant for an S5-95U as communications partner.
You will find additional information on the connection of the CP 5430 to the SINEC L2 network in the
”SINEC L2 Local Area Network, CP 5430 with COM 5430” Manual, order number 6GK1 9705AA00-0AA0.
EWA 4NEB 812 6112-02
6-3
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Data Transfer with PLC-to-PLC Connections
6.2
DB1
SL2:
...
STBS 2 MB 10
STBR 2 MB 11
...
Receive
Transmit
6-4
PLC 1
transmits to...
PLC 1
receives from...
PLC 2
receives from...
ANR 1
PLC 3
receives from...
ANR 1
PLC 4
receives from...
ANR 1
ANR 3
ANR 4
ANR 2
S5-95U, SINEC L2
Assigning Parameters in DB1 of the S5-95U for Data Exchange with
PLC-to-PLC Connections
There are no default settings in DB1 for the PLC-to-PLC connections. You assign the parameters in
data block DB1 for the following items:
• The station to which the data is to be sent and from which the data is to be received
• The location of the status byte for the function blocks FB L2-SEND and FB L2-RECEIVE for
each connection desired
All status bytes must be in the flag byte area. The status of transmit or receive jobs is displayed in
the status byte, as well as possible errors. The structure and the evaluation of status bytes are
discussed in detail in section 5.4. For function block FB L2-RECEIVE, the flag byte following the
status byte is always reserved for the length byte. The length byte tells how many bytes of data
were received. You have only reading rights to the length bytes.
Figure 6-3 shows how the DBs, STBs, and L2 FBs work together for data transmission in a
programmable controller.
Status byte ‘Send’
flag byte 10
Status byte ‘Receive’
flag byte 11
Length byte flag byte 12
L2-SEND
.
A-NR : KY 0,2
.
DBNR : KY 0,21
QANF : KF 0
.
DB21
DW 0
.
..
L2-RECEIVE
.
A-NR : KY 0,2
.
DBNR : KY 0,22
ZANF : KF 1
.
DB22
DW 1
.
..
Figure 6-3. Diagram: Data Transmission Using PLC-to-PLC Connections
Table 6-1 is a configuration aid for assigning job numbers in DB1.
Create such a table in your planning phase.
How to read the table: Job number A-NR = station address TLN of the communication partner.
Example:
PLC 1 transmits with A-NR 2 to PLC 2;
PLC 1 receives with A-NR 2 from PLC 2 etc.
Table 6-1. Configuring Job Number n in DB1
PLC 2
transmits to...
ANR 2
PLC 3
transmits to...
ANR 1
ANR 3
ANR 2
ANR 3
ANR 2
ANR 4
PLC 4
transmits to...
ANR 1
ANR 4
ANR 1
ANR 2
ANR 4
ANR 2
ANR 3
ANR 4
ANR 3
ANR 3
ANR 4
EWA 4NEB 812 6112-02
Example:
156:
KS
='
168:
180:
192:
KS
KS
KS
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 360
';
204:
.
.
.
KS
='STBS 2 MB10 STBR 2 MB11 ';
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*
156:
168:
180:
KS
KS
KS
='
SL2: TLN 2
STA AKT';
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
192:
204:
KS
KS
='SDT 1 12 SDT 2 360
';
='STBS 1 MB21 STBR 1 MB22 ';
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S5-95U, SINEC L2
Data Transfer with PLC-to-PLC Connections
The procedures to set and modify parameters in DB1 and to transfer DB1 are described in detail in
section 1.4.
DB1 Parameters for PLC-to-PLC Connections
Table 6-2. DB1 Parameters for PLC-to-PLC Connections
Parameter
Argument
EWA 4NEB 812 6112-02
SL2: TLN 1
Significance
Block ID: SL2:
SINEC L2
STBS
n MBx
Job number and location of status byte ‘Transmit
STBR
n MBy
Job number and location of status byte ‘Receive’
Argument
Permissible Range
n
MBx
MBy
1 to 31
1 to 254
1 to 253
STA AKT';
Explanation
Job number
Flag byte
Flag byte*
The next flag byte is reserved as length byte
Two S5-95U are to communicate with each other.
Table 6-3. Assigning Parameters for PLC-to-PLC Connections
DB1 for PLC 1
Explanation
L2 basic parameters (see section 1.4 for
explanation)
Transmitting from station 1 to station 2, STB
‘Transmit’ is in MB10.
Receiving from station 2, STB ‘Receive’ is in
MB11 (MB12 is reserved as length byte)
DB1 for PLC 2
L2 basic parameter (see section 1.4 for
explanation)
Transmitting from station 2 to station 1, STB
‘Transmit’ is in MB21.
Receiving from station 1, STB ‘Receive’ is in
MB22 (MB23 is reserved as length byte)
After you have completed assigning the parameters, you have to set up the control program for the
data exchange. The procedure for doing this is discussed in the next sections.
6-5
Data Transfer with PLC-to-PLC Connections
6.3
S5-95U, SINEC L2
Programming Example for Data Transmission
Connections Using Standard Function Blocks
via
PLC-to-PLC
This section explains the structure of the control programs for two programmable controllers.
Example:
PLC 1 and PLC 2 are to exchange data with one another, i.e., they will transmit and receive. Refer
to section 6.1 for the description of the hardware configuration.
The control program in FB105 for transmitting data is structured as illustrated below.
Wish to transmit? (Transmit trigger bit set by the user?)
yes
no
Call up of function block L2-SEND
Has PAFE message or STBS error occurred?
yes
Transmit request is
repeated automatically (call up of L2SEND)
no
Confirm transmit request. (The program resets the transmit trigger bit.)
End
The control program in FB15 for receiving data is structured as illustrated below.
Receive enabled and “Receive viable”? (Receive enable bit set by the user
and bit 0 of STBR =1?)
no
yes
Call up of function block L2-RECEIVE; data are fetched.
Has PAFE message or STBR error occurred?
yes
no
Receive request is repeated automatically
Confirm receive request. (The program resets the
(call up of L2-RECEIVE)
receive enable bit.)
End
6-6
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transfer with PLC-to-PLC Connections
Programmable Controller 1
Proceed as follows:
Assign parameters in DB1 of programmable controller 1 as described in section 6.2.
Program the individual blocks as described in the following section.
Transfer blocks DB1, OB1, FB5, FB105, DB21 and DB22 to programmable controller 1.
Cyclical Program for Station 1 (Programmable Controller 1)
Programmable controller 1 is to transmit data to programmable controller 2 and to receive data from
programmable controller 2.
Function block L2-SEND triggers the data transmission in programmable controller 1. L2-SEND is
called up in function block FB5 of programmable controller 2.
Function block L2-RECEIVE triggers the data reception. L2-RECEIVE is called up in function block
FB105. FB5 and FB105 are called up in organization block OB1. The transmit data are stored in data
block DB21. The received data are stored in data block DB22. Status byte ‘Send’ is flag byte FY10.
Status byte ‘Receive’ is flag byte FY11.
Significance of the Parameters for FB5 and FB105:
Input Parameter Bit ('Send' initiation bit)
A request to transmit is triggered by bit ANST. You set bit ANST. When the job is
completed without error, FB5 resets bit ANST. If initiation of a request to send ends with
an error message in STBS or PAFE, the request to send is repeated automatically.
EMPF:
Input Parameter Bit ('Receive’ enable bit)
Receiving is enabled by bit EMPF. You set bit EMPF. When the job is completed
without error, FB105 resets bit EMPF. If receiving ends with an error message in STBR
or PAFE, the receive procedure is repeated automatically.
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ANST:
OB1 for PLC 1
NETZWERK 1
0000
:
0001
: JU
0002 NAME
0003 ANST
0004
: S 1=>2
: F 5.0
:
0005
0006 NAME
0007 EMPF
: JU
: R 1<=2
: F 6.0
0008
:BE
EWA 4NEB 812 6112-02
Explanation
0000
FB 5
Send to station 2
'Send' initiation bit
FB 105
Receive from station 2
‘Receive’ enable bit
6-7
S5-95U, SINEC L2
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Data Transfer with PLC-to-PLC Connections
FB5 for PLC 1
Segment 1
NAME :
DES
:
S 1=>2
ANST
0009
000A
:
:
000B
000C
000D
:
: A
: AN
000E
000F
0010
: =
:
: A
F 20.1
0011
0012
0013
: =
:
: A
F 20.0
0014
0015
0016
: AN
: RB
: R
F 20.7
=ANST
F 20.5
0017
0018
0019
:
: A
: AN
=ANST
F 20.5
001A
001B
001C
: R
:
: JC
0000
:
:
:
:
Transmitting from station 1 to station 2
I/B/D/B/T/Z: I BI/BY/W/D: BI
F 10.2
F 20.0
F 10.2
F 20.1
Edge evaluation
“Job completed without error” via
STBS = flag byte FY10
STBS bit “Job completed without error”
Edge auxiliary flag.
Edge flag “Job completed”
If “Job completed without error”,
set edge auxiliary flag.
If “Job completed“ and
no parameter assignment error is present,
reset send initiation bit,
reset send disabling bit.
F 20.0
If Send initiation bit is set and
send disabling bit is not set,
reset edge auxiliary flag.
FB 252
Call-up of FB L2-SEND
F 255.0
Send to station 2
Send data are stored in a data block,
DB number is 21,
starting with data word DW0.
Three words are to be sent (DW0 to DW2).
Note parameter assignment error message.
001D
001E
001F
0020
NAME
A-NR
QTYP
DBNR
0021
0022
0023
QANF : KF + 0
QLAE : KF + 3
: A
0024
0025
0026
: =
:
: A
F 20.7
0027
0028
: =
: BE
F 20.5
6-8
Explanation
L2-SEND
KY 0,2
KS DB
KY 0,21
F 10.1
If STBS bit “Job in progress” is set,
set send disabling bit.
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
NAME
DES
000A
000B
000C
:
:
R 1<=2
EMPF
: ON
: ON
: BEC
000D
000E
000F
:
: JU
NAME : L2-REC
0010
0011
0012
A-NR : KY 0,2
ZTYP : KS DB
DBNR : KY 0,22
0013
0014
0015
ZANF : KF +1
ZLAE : KF -1
: AN
0016
0017
: AN
: RB
0018
0019
:
: BE
0:
1:
KY = 000,000;
KY = 000,000;
2:
3:
KY = 000,000;
KH = 0000;
0:
1:
KH = 0000;
KY = 000,000;
2:
3:
KY = 000,000;
KY = 000,000;
EWA 4NEB 812 6112-02
Data Transfer with PLC-to-PLC Connections
FB105 for PLC 1
F 255.0
F 11.3
=EMPF
DB21 for PLC 1
DB22 for PLC 1
Explanation
Netzwerk 1
I/Q/D/B/T/Z: I BI/BY/W/D: BI
Station 1 receives from station 2
=EMPF
F 11.0
If receiving is not enabled or
if STBR bit “Receive viable” is not set,
end here.
FB 253
Call-up of FB L2-RECEIVE
Receiving from station 2
Received data are stored in a data block,
DB number is 22,
starting with data word DW1.
“Wildcard length”
If there is no parameter assignment error message
and STBR bit “Job completed with error” is not
set, “Job completed with error” is not set,
reset receive enable bit.
Explanation
Send area to PLC 2
Send area to PLC 2
Send area to PLC 2
Receive area from PLC 2
Receive area from PLC 2
Receive area from PLC 2
byte 1 +2
byte 3 +4
byte 5 +6
Explanation
byte 1+2
byte 3+4
byte 5+6
.
.
.
6-9
Data Transfer with PLC-to-PLC Connections
S5-95U, SINEC L2
Programmable Controller 2
Proceed as follows:
Assign parameters in the DB1 of programmable controllers 2 as described in section 6.2.
Program the individual blocks as described in the following section.
Transfer blocks DB1, OB1, FB1, DB21 and DB22 to programmable controller 2.
Cyclical Program for Station 2 (Programmable Controller 2)
Programmable controller 2 is to transmit data to programmable controller 1 and to receive data from
programmable controller 1.
Function block L2-SEND in programmable controller 2 triggers the data transmission.
L2-SEND is called up in function block FB5 of programmable controller 1.
Function block L2-RECEIVE triggers the data reception in programmable controller 2.
L2-RECEIVE is called up in function block FB105.
FB5 and FB105 are called up in organization block OB1. The transmit data are stored in data block
DB21. The received data are stored in data block DB22. Status byte ‘Send’ is flag byte 21. Status
byte ‘Receive’ is flag byte 22.
Significance of the Parameters for FB5 and FB105:
Input Parameter Bit (trigger bit ‘Transmit’)
A transmit request is triggered by bit ANST. You set bit ANST. When the job is
completed without error, FB5 resets bit ANST. If triggering of a transmit request ends
with an error message in STBS or PAFE, the transmit request is repeated automatically.
EMPF:
Input Parameter Bit (enable bit ‘Receive’)
Receiving is enabled by bit EMPF. You set bit EMPF. When the job is completed
without error, FB105 resets bit EMPF. If receiving ends with an error message in STBR
or PAFE, the receive procedure is repeated automatically.
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ANST:
OB1 for PLC 2
SEGMENT 1
0000
0001
:
: JU
0002 NAME
0003 ANST
0004
: S 2=>1
: F 5.0
:
0005
0006 NAME
0007 EMPF
: JU
: R 2<=1
: F 6.0
0008
:BE
6-10
Explanation
0000
FB 5
Transmit to station 1.
Trigger bit ‘Transmit’
FB 105
Receive from station 1
Enable bit 'Receive'
EWA 4NEB 812 6112-02
Data Transfer with PLC-to-PLC Connections
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S5-95U, SINEC L2
FB5 for PLC 2
SEGMENT 1
NAME
DES
:
:
Explanation
0000
S 2=>1
ANST
Transmitting from station 2 to station 1
I/Q/D/B/T/Z: I BI/BY/W/D: BI
0009
000A
000B
:
:
:
000C
000D
000E
: A
: AN
: =
F 21.2
F 42.0
F 42.1
Edge evaluation
“Job completed without error” via
STBS = flag byte FY21
STBS bit “Job completed without error”
Edge auxiliary flag
Edge flag “Job completed”
000F
0010
0011
:
: A
: =
F 21.2
F 42.0
If “Job completed without error”,
set edge auxiliary flag.
0012
0013
0014
:
: A
: AN
F 42.1
F 42.7
0015
0016
0017
: RB
: R
:
=ANST
F 42.5
If “Job completed“ and
no parameter assignment error is present,
reset send initiating bit,
reset send disabling bit.
0018
0019
001A
: A
: AN
: R
=ANST
F 42.5
F 42.0
If send initiating bit is set and
send disabling bit is not set,
reset edge auxiliary flag.
001B
001C
001D
:
: JC
NAME : L2-SEND
FB 252
Call-up of FB L2-SEND
001E
001F
0020
A-NR : KY 0,1
QTYP : KC DB
DBNR : KY 0,21
0021
0022
0023
0024
QANF : KF + 0
QLAE : KF + 3
: A
: =
F 255.0
F 42.7
0025
0026
0027
:
: A
: =
F 21.1
F 42.5
0028
0029
:
: BE
EWA 4NEB 812 6112-02
Send to station 1
Send data are stored in a data block,
DB number is 21,
starting with data word DW0.
Three words are to be sent (DW0 to DW2).
Note parameter assignment error message.
If STBS bit “Job in progress” is set,
set send disabling bit.
6-11
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Data Transfer with PLC-to-PLC Connections
SEGMENT 1
NAME :
S 2<=1
DES
EMPF
I/Q/D/B/T/Z: I BI/BY/W/D: BI
000A
: ON
=EMPF
000B
000C
000D
: ON
: BEC
:
F 22.0
If receiving is not enabled or
if STBR bit “Receive viable” is not set,
end here.
FB 253
Call-up of L2-RECEIVE
0017
0018
0019
6-12
:
000E
000F
0010
: JU
NAME : L2-REC
A-NR : KY 0,1
0011
0012
0013
ZTYP : KS DB
DBNR : KY 0,22
ZANF : KF +1
0014
0015
0016
ZLAE : KF -1
: AN
: AN
: RB
:
: BE
0:
1:
2:
KY = 000,000;
KY = 000,000;
KY = 000,000;
3:
KH = 0000;
0:
KH = 0000;
1:
2:
3:
KY = 000,000;
KY = 000,000;
KY = 000,000;
F 255.0
F 22.3
=EMPF
DB21 for PLC 2
DB22 for PLC 2
S5-95U, SINEC L2
FB105 for PLC 2
Explanation
Station 2 receives from station 1
Receiving from station 1
Received data are stored in a data block,
DB number is 22,
starting with data word DW1.
“Wildcard length”
If there is no parameter assignment error message
and STBR bit “Job completed with error” is not
set, reset enable bit ‘Receive’.
Explanation
Send area to PLC 1
Send area to PLC 1
Send area to PLC 1
Bytes 1 +2
Bytes 3 +4
Bytes 5 +6
Explanation
Receive area from PLC 1 Bytes 1+2
Receive area from PLC 1 Bytes 3+4
Receive area from PLC 1 Bytes 5+6
.
.
.
Switch both programmable controllers from STOP to RUN.
Check the data transmission. This is done best with a programmer: Connect each programmable controller to a programmer and display the data blocks, the status bytes, and the parameter
assignment error byte.
Refer also to section 3.3 “Starting up a System”.
Appendix E gives you information on cycle delay times in the programmable controllers due to data
transmission.
EWA 4NEB 812 6112-02
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7
Data Transmission Using Cyclic I/O
7.1
Features of Cyclic I/O
7.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange
with Cyclic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 - 4
7.3
Controlling Data Transmission in the Control Program
..........
7 - 7
7.4
Programming Example for Data Transmission via Cyclic I/O . . . . . .
7 - 12
EWA 4NEB 812 6112-02
................................
7 - 1
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Figures
7-1.
7-2.
7-3.
7-4.
7-5.
7-6.
7-7.
7-1.
7-2.
7-3.
Functional Diagram of Cyclic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram: Data Transmission Using Cyclic I/O . . . . . . . . . . . . . . . . . . . . .
Division of the DB Reserved for Cyclic I/O (ZP) in the S5-95U
(Example for ZP Master) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Division of the DB Reserved for Cyclic I/O (ZP) in the S5-95U
(Example for ZP Slave) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of the Status Byte (STB) for the ZP Master . . . . . . . . . . . . . . . .
Structure of the ZP Slave Life List
.............................
Structure of the Status Byte (STB) for the ZP Slave . . . . . . . . . . . . . . . . .
DB1 Parameters for Cyclic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assigning Parameters for Cyclic I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ZP Slave “Response Time” for the S5-95U Calculated from the Baud Rate
at a Given Slot Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 - 2
7 - 4
7 - 5
7
7
7
7
5
8
9
10
Tables
7 - 6
7 - 7
7 - 11
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
7
Data Transmission Using Cyclic I/O
Data Transmission Using Cyclic I/O
This chapter provides you with the following information:
• How this type of data transmission functions in principle
• How to set parameters for the programmable controllers
• How to program with STEP 5 for this type of data transmission (examples)
7.1
•
•
•
•
•
Features of Cyclic I/O
Data transmission with cyclic I/O (ZP) is appropriate for the frequent transmission of small
amounts of data between active S5-95Us and passive S5-95Us or field devices. Extensive
programming is not required.
A ZP station that scans other ZP stations is called a ZP master. A ZP master is always an
active station on the SINEC L2 network.
A ZP station that is scanned by a ZP master is called a ZP slave. A ZP slave is generally a
passive station on the SINEC L2 network. Exception: a ZP slave S5-95U can be either an
active or a passive station on the SINEC L2 network.
The following devices can be ZP masters:
- an active S5-95U
- a CP 5430
The following devices can be ZP slaves:
- an active S5-95U
- a passive S5-95U
- a field device
Settings in DB1 determine master/slave status of an S5-95U.
Each ZP master can service a maximum of 32 ZP slaves. Several ZP masters can request
data in parallel from a ZP slave.
A reserved data block (ZP DB) is responsible in the S5-95U for the word-by-word data
exchange. The cyclic I/O input area (ZPE) and cyclic I/O output area (ZPA) for the respective
stations are defined in data block ZP DB.
In the ZP master, the ZPE and the ZPA can each accept a maximum of 128 data words. In the
ZP slave, the ZPE and the ZPA can each accept a maximum of 121 data words.
The input data and output data are available without requiring a request to transmit or a request
to receive in the control program.
You set the parameters for the ZP DB and for the ZP areas in DB1.
Status bytes (STBs) are available to control the cyclic I/O. ou set the parameters for the
location of the STBs in DB1.
EWA 4NEB 812 6112-02
7-1
Data Transmission Using Cyclic I/O
S5-95U, SINEC L2
Principle of Operation
A reserved data block (ZP DB) is responsible in the S5-95U for the word-by-word data exchange.
The cyclic I/O input area (ZPE) and cyclic I/O output area (ZPA) for the respective stations are
defined in data block ZP DB.
S5-95U
Active
stations
Transmit
data
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ZPA ZPE
Evaluation of the
received data
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stations
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Bus
Field device
S5-95U
ZP slave
ZP slave
ZPE ZPA
ZPE
ZPA
Figure 7-1. Functional Diagram of Cyclic I/O
Explanations to Figure 7-1:
The boxes filled with a pattern represent the data areas (same pattern = same data area).
The user program writes the transmit data to the ZPA of the ZP master . The transmit data are
transmitted automatically to the respective ZP slaves and written to their ZPE .
At the same time, the contents of the ZP slave’s ZPA are transmitted to the corresponding ZPE
of the ZP master where the user program can evaluate them.
The ZP master creates a ZP slave life list containing all the states of the ZP slaves that the ZP
master scans.
Note
You may read and write the complete ZPA.
You may only read out the ZPE.
7-2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
Updating the Cyclic I/O Input Area and Output Area
There is an exchange of ZP data (ZPA, ZPE, and ZP status bytes) between the control processor
and the communications processor at every cycle control point in the programmable controller's
CPU program cycle.
The communications processor transmits ZP data cyclically via the network independently of the
ZP cycle control point of the programmable controller’s CPU operating system.
There is complete data consistency for ZPA and ZPE.
SAP Number
A ZP slave can be addressed only if the ZP master knows both the ZP slave address and its
appropriate service access point (SAP).
You set the parameters for the ZP slave address and the ZP slave's SAP number in DB1 of the ZP
master.
If you are using an S5-95U as a ZP slave, the SAP number is 61: You must set the SAP
parameter in DB1 of the ZP master to 61.
If you are using a field device as a ZP slave, you can set the SAP parameter in DB1 of the ZP
master from 0 to 62. Refer to Appendix B for more detailed explanations and for a list of all SAP
numbers used with S5-95U programmable controllers.
Restart sequence when:
• powering up the PLC or
• switching the PLC from STOP to RUN following a "PLC overall reset" or
• switching the PLC from STOP to RUN after modification of the SL2 parameter block in
DB1
Before executing the restart OBs (OB21/OB22), ZPA and ZPE are assigned the default value "0" in
the ZP-DB. Bit 7 "ZP slave failure" or bit 7 "ZP master failure"in the STB is set ( section 7.3).
Restart sequence when:
• switching the PLC from STOP to RUN without modification of the SL2 parameter block
in DB1
ZPA is assigned the default value ”0” in the ZP DB before execution of the restart OB (OB21). The
input data presently available from the LAN are written to the ZPE in the ZP DB.
ZP Safety Function
When the programmable controller goes from RUN to STOP, ZPA and ZPE stay unchanged in the
ZP DB.
When the programmable controller is in the STOP mode, the value “zero” is sent as ZP output
data.
If a ZP slave fails, the ZP input bytes assigned to it in the ZP master are reset to 0. If a ZP master
fails, the ZP input bytes assigned to it in the ZP slave are reset to 0.
You can read out the status of all the ZP slaves by means of the ZP slave life list (see section 7.3)
EWA 4NEB 812 6112-02
7-3
Data Transmission Using Cyclic I/O
S5-95U, SINEC L2
Communication with the CP 5430 Communications Processor
The CP 5430 communications processor is required when S5-95U programmable controllers
communicate via cyclic I/O (ZP) with the SIMATIC S5-115U to S5-155U controllers. The CP 5430
functions as the ZP master. The S5-95U functions as the ZP slave. Section 7.2 describes how to
set the parameters for the S5-95U.
You must enter the input/output areas and the SAP 61 as the destination into the ZP editor
screen of COM CP 5430.
Refer to the SINEC L2 CP 5430 Operating Guide for additional information about the CP 5430.
7.2
Assigning Parameters in DB1 of the S5-95U for Data Exchange with
Cyclic I/O
DB1 does not have default settings for ZP. Assign the following parameters:
• The ZP output area ZPA where the transmit data are located
• The ZP input area ZPE where the receive data are located
• The location of the status bytes
You must assign parameters in DB1 for the location of one status byte (STB). All status bytes must
be in the flag area. The status byte indicates the status of the cyclic I/O and possible errors.
You can assign parameters in DB1 of the ZP master for a status byte that will allow you to get the
ZP slave life list. Section 7.3 describes the structure of the status bytes and explains the ZP slave
life list.
You set parameters for a ZP data block (ZP DB) in DB1. Figure 7-2 illustrates how DB1, the STBs ,
and ZP DB work together in a ZP master.
DB1
SL2:
...
ZPDB DB100
ZPMS MB100
ZPLI
...
MB101
Status byte for ZP master MB100
Status byte for ZP slave life list MB101
Length byte MB102
DB100
ZPE
.
.
ZPA
.
DB202
ZP slave life
list
Figure 7-2. Diagram: Data Transmission Using Cyclic I/O
Both the entire ZP input area and the entire ZP output area of an S5-95U must be in one area
without gaps in the ZP data block. The same ZPA or even data words from the ZPA of a ZP master
can be specified for different ZP slaves.
Figures 7-3 and 7-4 illustrate this requirement with an example for a ZP master and an example for
a ZP slave.
7-4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
Examples:
ZP DBx for ZP Master
ZPE of ZP slave 1
DW 1 ...
ZPE of ZP slave 2
ZPE of ZP slave 23
Complete ZP input
area
(max. 128 DW)
ZPE of ZP slave 31
ZPE of ZP slave 4
.
.
.
ZPE of ZP slave 13
... DW 60
ZPA for ZP slaves 4 & 15
DW 140 ...
ZPA for ZP slave 15
Complete ZP output
area
(max. 128 DW)
ZPA for ZP slaves 1, 2, & 4
.
.
.
ZPA for ZP slave 24
... DW 255
Figure 7-3. Division of the DB Reserved for Cyclic I/O (ZP) in the S5-95U
(Example for ZP Master)
ZP DBx for ZP Slave
Complete ZP output
area
(max. 121 DW)
DW 1 ...
ZPA for ZP master
... DW 50
Complete ZP input
area
(max. 121 DW)
DW 150 ...
ZPE of ZP master
... DW 255
Figure 7-4. Division of the DB Reserved for Cyclic I/O (ZP) in the S5-95U
(Example for ZP Slave)
EWA 4NEB 812 6112-02
7-5
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Data Transmission Using Cyclic I/O
Parameter
a
b
DWc or X
DWd or X
DWe or X
DWf or X
DBx
MBy
MBz
*
7-6
1 to 126
0 to 62
0 to 255
0 to 255
0 to 255
0 to 255
2 to 255
1 to 254
1 to 253
S5-95U, SINEC L2
The procedures to set and modify parameters in DB1 and to transfer DB1 are described in detail in
section 1.4.
DB1 Parameters for Cyclic I/O
Table 7-1. DB1 Parameters for Cyclic I/O
Argument
Significance
Block ID: SL2:
SINEC L2
Parameters for ZP Master Function:
ZPDB
DBx
Reserved data block for cyclic I/O
ZPMS
MBy
Status byte (STB) for ZP master
ZPM
a b DWc DWd
DWe DWf
ZPLI
MBz
Argument
Permissible Range
ZP master/slave connection (max. 32 connections can
be programmed)
Status byte (STB) for ZP slave life list
Explanation
ZP slave station address
L2 SAP of ZP slave (if S5-95U is ZP slave, enter 61
ZPA lower limit; data word; X for “non defined”
ZPA upper limit; data word; X for “non defined”
ZPE lower limit; data word; X for “non defined”
ZPE upper limit; data word; X for “non defined”
Data block
Flag byte
Flag byte
Parameters for ZP Slave Function:
ZPDB
DBx
Reserved DB for cyclic I/O
ZPSS
MBz
Status byte (STB) for ZP slave
ZPSA
DWa DWb
ZP slave output area
ZPSE
DWc DWd
ZP slave input area
Argument
Permissible Range
DWa or X
DWb or X
DWc or X
DWd or X
DBx
MBz
0 to 255
0 to 255
0 to 255
0 to 255
2 to 255
1 to 254
Explanation
ZPA lower limit; data word; X for “non defined”
ZPA upper limit; data word; X for “non defined”
ZPE lower limit; data word; X for “non defined”
ZPE upper limit; data word; X for “non defined”
Data block
Flag byte
The next flag byte is reserved as length byte.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
Example: Four S5-95Us are to communicate using cyclic I/O. Programmable controller 1 is the ZP
master, programmable controllers 40, 41 and 42 (all of them passive) are the ZP slaves.
Some of the default parameters (represented shaded in Table 7-2) in DB1 need to be
modified.
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Table 7-2. Assigning Parameters for Cyclic I/O
DB1 Parameters for PLC 1 (ZP Master)
KS
KS
KS
='
SL2: TLN 1
STA AKT';
=' BDR 1500
HSA 1
TRT ';
='5120
SET 60 SDT 1 15';
192:
204:
216:
KS
KS
KS
='0 SDT 2 980 ST 1000
='ZPDB DB100 ZPMS MB100
='ZPLI MB101 ZPM 40 61
';
';
';
228:
240:
252:
264:
KS
KS
KS
KS
='DW1 DW10 DW101 DW110
='ZPM 41 61
='DW11 DW20 DW111 DW120
='ZPM 42 61
';
';
';
';
276:
.
.
.
KS
='DW21 DW30 DW121 DW130
';
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156:
168:
180:
Explanation
L2 basic parameters (see section 1.4 for
explanation);
ZP DB for the ZP master is DB100;
STB for the ZP master is FY100;
STB for the ZP slave life list is FY101;
For station 40: L2 SAP 61,
ZPA= DW 1 to DW 10,
ZPE= DW 101 to DW 110;
For station 41: L2 SAP 61,
ZPA=DW 11 to DW 20,
ZPE= DW 111 to DW 120;
For station 42: L2 SAP 61, ZPA=
DW 21 to DW 30, ZPE=DW 121 to DW 130
156:
168:
KS
KS
180:
192:
204:
KS
KS
KS
216:
.
.
.
KS
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DB1 Parameters for PLC 40 (ZP Slave)
='
SL2: TLN 40 STA PAS';
=' BDR 1500 SDT 1 150
';
=' ST 1000
='ZPDB DB100 ZPSS MB100
='ZPSA DW1 DW10
';
';
';
='ZPSE DW11
';
DW20
L2 basic parameters (see section 1.4 for
explanation);
ZP DB for the ZP slave is DB100;
STB for the ZP slave is MB100;
ZPA=DW 1 to DW 10;
ZPE=DW 11 to DW 20
Change parameters in the DB1s of PLC 41 and PLC 42 as you did for PLC 40.
7.3
Controlling Data Transmission in the Control Program
Each ZP master and each ZP slave is provided with a status byte to control cyclic I/O. The status
byte indicates the ZP status and any errors that may have occurred.
The ZP master also creates a ZP slave life list that can be fetched by FB L2-RECEIVE (with job
number A-NR 202). An additional status byte is necessary for this. See section 5.4 for information
on the structure of the status byte for FB L2-RECEIVE.
You can scan the status bytes (STB) in the control program and program reactions to possible
errors. You have already set the parameters for the location of the status bytes in data block DB1
( section 7.2).
EWA 4NEB 812 6112-02
7-7
Data Transmission Using Cyclic I/O
S5-95U, SINEC L2
Status Byte for the ZP Master
Error codes
Status codes
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
0:
1:
No ZPE cycle overflow
ZPE cycle overflow:
new ZP input data are available in DB ZP from all ZP slaves
although the CPU could not yet take over the previous ZP input
data .
0:
1:
No ZPA cycle overflow
ZPA cycle overflow:
The CPU has provided new ZP output data from the ZP DB to
the communications processor although previous ZP output data
could not yet be transmitted via the bus.
0:
All ZP slaves transmitted the programmed number of ZP input
data.
At least 1 ZP slave did not transmit the programmed number of
ZP input data.
- If too many data were sent, the rest is discarded.
- If too few data were sent, the rest is filled up with “0”.
1:
0:
1:
ZP bus cycle is presently running.
A complete ZP bus cycle ended at the last ZP control point
(before this OB1 cycle) (scanning of all the programmed ZP
slaves by the ZP master):
- The newest ZP input data are available from all programmed
ZP slaves and
- the ZP slave life list was updated in the communications
processor.
Bit 3 stays set for one PLC-CPU program cycle.
0:
1:
ZP data in ZP DB and ZP slave life list are valid.
ZP data in ZP DB and ZP slave life list are temporarily invalid;
previous ZP output data are being transmitted via the bus.
0:
1:
No ZP DB error
Programmed ZP DB is not available or ZP DB is too small; ZP
image in ZP DB is invalid, ZP output data “0” are being
transmitted via the bus.
0:
1:
No ZP configuration error
One error minimum has occurred in at least one ZP slave:
- SAP not activated or parameter settings incorrect.
- ZP slave has insufficient or no receiving resources;
ZP slaves concerned are entered on ZP slave life list and their
ZP input area is set in ZP DB to “0”.
0:
1:
All ZP slaves okay
At least one ZP slave has failed, is still in the start-up phase or
ZP master is still in the start-up phase; concerned ZP slaves are
entered in ZP slave life list and their ZP input area in ZP DB is
set to “0”.
R = Read only
Figure 7-5. Structure of the Status Byte (STB) for the ZP Master
7-8
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
ZP Slave Life List
The ZP master (S5-95U) creates a ZP slave life list that contains the status of of every ZP slave
scanned by the ZP master. The remaining entries in the list are zeros.
There is an entry in the ZP slave life list when the ZP master scans the ZP slave and either a ZP
configuration error (STB bit 6) or a ZP slave failure (STB bit 7) occurs.
The ZP slave life list contains 16 bytes. The state of every ZP slave is represented in bits 1 to 126.
Bit 0 and bit 127 are irrelevant (=0).
You can fetch the ZP slave life list using FB L2-RECEIVE and store it as a consistent area (no
gaps) in the flag area or in a data block.
Example: ZP slave life list is located in the flag area starting with flag byte FY2
2
3
4
5
6
7
TLN of the ZP slave
0/
1
2.5
0/
1
2.4
0/
1
2.3
0/
1
2.2
0/
1
2.1
0/
1
2.0
Status of the ZP slave
2.7
0/
1
2.6
8
9
10
11
12
13
14
15
TLN of the ZP slave
0/
1
3.7
0/
1
3.6
0/
1
3.5
0/
1
3.4
0/
1
3.3
0/
1
3.2
0/
1
3.1
0/
1
3.0
Status of the ZP slave
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1
Flag byte FY2
Flag byte FY3
Bit
Bit
1
2
3
4
5
6
0/
0/
0/
0/
0/
0/
1
1
1
1
1
1
2.15 2.14 2.13 2.12 2.11 2.10 2.9
7
8
9
10
11
12
13
14
15
TLN of the ZP slave
0/
1
2.8
0/
1
2.7
0/
1
2.6
0/
1
2.5
0/
1
2.4
0/
1
2.3
0/
1
2.2
0/
1
2.1
0/
1
2.0
Status of the ZP slave
Data
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DW2
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Example: ZP slave life list is located in data block starting with data word DW2
Status 0: ZP slave is okay or is not scanned by this ZP
master
Status 1: a “ZP configuring error” or a “ZP failure” occurred
with this ZP slave
Bit for station 0 is irrelevant (=0)
Figure 7-6. Structure of the ZP Slave Life List
You can fetch the ZP slave life list using FB L2-RECEIVE with job number A-NR 202. For this
purpose, you need an additional STB for the ZP master (refer to section 5.4 for information on the
structure of the STB of FB L2-RECEIVE). You assign STB parameters in DB1 under parameter
ZPLI (see section 7.2).
The ZP slave life list can be fetched only if, in the corresponding STB, bit “Receive viable” is set.
Bit “Receive viable” is set only if an error occurred at least in one of the ZP slaves.
EWA 4NEB 812 6112-02
7-9
Data Transmission Using Cyclic I/O
S5-95U, SINEC L2
Status Byte for the ZP Slave:
Error codes
6
5
4
3
2
1
0
R
R
R
R
R
R
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R
Status codes
0: No ZPE cycle overflow
1: ZPE cycle overflow:
New ZP input data are available in ZP DB from ZP master
although the CPU could not yet take over previous ZP input data.
0: No ZPA cycle overflow
1: ZPA cycle overflow:
The CPU has provided new ZP output data from the ZP DB to
the communications processor although previous ZP output data
could not yet be preprocessed for the bus.
0: The ZP master transmitted the programmed number of ZP input
data.
1: The ZP master did not transmit the programmed number of ZP
input data:
- If too many data were sent, the rest is discarded.
- If too few data were sent, the rest is filled up with “0”.
0: ZP bus cycle is presently running.
1: A ZP bus cycle ended at the last ZP control point (before this
OB1 cycle) (scanning of the ZP slave by the ZP master):
- The newest ZP input data are available from the ZP master.
Bit 3 stays set for one PLC-CPU program cycle.
0: ZP data in ZP DB are valid.
1: ZP data in ZP DB are temporarily invalid; previous ZP output
data are being transmitted via the bus.
0: No ZP DB error
1: Programmed ZP DB is not available or ZP DB is too small; ZP
image in ZP DB is invalid, ZP output data “0” are transmitted via
the bus.
0: The ZP master is okay.
1: The ZP master has failed, is still in the start-up phase (ZP slave
was not scanned within a certain “access time”) or the ZP slave
is still in the start-up phase; the complete ZPE in ZP DB is set to
“0”.
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R:
Read only
Irrelevant bit (=0)
Figure 7-7. Structure of the Status Byte (STB) for the ZP Slave
7-10
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
ZP Slave Watchdog
The S5-95U as a ZP slave has a watchdog. If the ZP slave is not scanned cyclically within the
“response time” by a ZP master, bit 7 “ZP master failure” is set in the ZP slave status byte and the
entire ZPE in ZP DB is set to zero.
Table 7-3 lists the ZP slave “response time” for the S5-95U calculated from the Baud rate at a
given slot time.
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Table 7-3. ZP Slave “Response Time” for the S5-95U Calculated from the Baud Rate at a
Given Slot Time
Baud Rate
Slot-Time
ZP Slave “Response Time”
9.6 kBaud
73 bit time units*
6s
19.2 kBaud
76 bit time units*
3s
39.75 kBaud
99 bit time units*
0.654 s
187.5 kBaud
170 bit time units*
0.381 s
500
kBaud
400 bit time units*
0.207 s
1500
kBaud
1000 bit time units*
0.125 s
* One bit time unit is the time it takes to transmit one bit (reciprocal value of baud rate)
If you are using a slot time that differs from the ones listed in Table 7-3 (permissible range for slot
time: 50 to 4095), you can calculate the “response time” with the following formula:
Tresponse
= 140 · (Tslot + 341) · Tbit
Tresponse
= ZP slave response time in seconds
Tslot
= Slot time in bit time units
Tbit
= Bit time units =
1
bdr
in seconds
Minimum ZP slave response time:
100 ms (i. e., if the calculated Tresponse is < 100 ms, the
minimum ZP slave response time is 100 ms)
Maximum ZP slave response time: 5 min (i. e., if the calculated Tresponse
is >5 min, the
maximum ZP slave response time is 5 min)
Tolerance:
EWA 4NEB 812 6112-02
- 0% +20% Tresponse
7-11
Data Transmission Using Cyclic I/O
7.4
S5-95U, SINEC L2
Programming Example for Data Transmission via Cyclic I/O
This section explains the structure of the control programs for cyclic I/O.
The data are exchanged cyclically without request to transmit or request to receive: The data
exchange is controlled within the control program only by the status byte.
Example:
An S5-95U (ZP master) is to supply data to three S5-95Us (ZP slaves, passive stations) and to
receive data from them.
The control program in FB202 for ZP master is structured as illustrated below.
Are ZP data in ZP DB and ZP slave life list valid (STB-ZPMS bit 4)?
yes
no
”RECEIVE viable”? (ZP slave life list, STB bit 0=1?)
no
yes
Call-up of FB L2-RECEIVE; ZP slave life list is fetched.
Reset ZP
station error
bits
Did a PAFE or STB error occur as ZP slave
life list was fetched?
no
yes
Evaluate ZP slave life list entry
Set station error bit
End
Cyclic Program for Station 1 (ZP Master)
In FB202, FB L2-RECEIVE scans the ZP slave life list for updated entries.
FB202 is called up from OB1.
The ZP slave life list is located in DB202. ZP DB for the ZP master is DB100. The status byte for
the ZP slave life list is flag byte FY101. The status byte for the ZP master is flag byte FY100.
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Proceed as follows:
Assign parameters for programmable controller 1 as the ZP master as described in section 7.2.
Program the individual blocks as described in the following section.
Transfer blocks OB1, FB202, DB202, and DB100 to programmable controller 1.
OB1 for PLC 2 (ZP Slave)
NETZWERK 1
0000
:
0002
: JU
0004
0006
0008
Name : ZP-ST-LI
SL40 : F 4.0
SL41 : F 4.1
000A
000C
000E
SL42 : F 4.2
FEHL : F 4.3
: BE
7-12
Explanation
0000
FB 202
Station error bit, is set if PLC 2 (TLN 40) failed
Station error bit, is set if PLC 3 (TLN 41) failed
Station error bit, is set if PLC 4 (TLN 42) failed
Error when reading out ZP slave life list, indicated in
STB/PAFE
EWA 4NEB 812 6112-02
Data Transmission Using Cyclic I/O
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S5-95U, SINEC L2
FB202 for PLC 1 (ZP Master)
SEGMENT 1
Explanation
0000
NAME
DES
DES
:
:
:
ZP-ST-LI
SL40
SL41
I/Q/D/B/T/Z: Q BI/BY/W/D: BI
I/Q/D/B/T/Z: Q BI/BY/W/D: BI
DES
DES
:
:
SL42
FEHL
I/Q/D/B/T/Z: Q BI/BY/W/D: BI
I/Q/D/B/T/Z: Q BI/BY/W/D: BI
0008
: A
F 100.4
000A
000C
000E
: BEC
:
: A
If ZP data in ZP DB and ZP slave life list are
temporarily invalid, end here.
F 101.0
0010
0012
0014
: JC
:
: RB
=READ
If STB bit ‘Receive viable’ is set for ZP slave
life list, jump to ‘Read ZP slave life list’.
=SL40
Reset error bits of ZP stations
0016
0018
001A
: RB
: RB
: RB
=SL41
=SL42
=FEHL
001C
001E
0020
: BEU
READ :
: JU
0022
0024
0026
NAME : L2-REC
A-NR : KY 0,202
ZTYP : KS DB
0028
002A
002C
DBNR : KY 0,202
ZANF : KF + 0
ZLAE : KF - 1
FB 253
Call up L2-RECEIVE FB
002E
0030
: O
: O
F 101.3
F 255.0
0032
0034
0036
: =
: BEC
:
=FEHL
Read job number for ZP slave life list
ZP slave life list is located in a data block,
DB number is 202,
starting with data word DW0.
“Wildcard length”
If STB bit ‘Job completed with error’ is set ,
or if there is a parameter assignment error
message,
set error bit.
0038
003A
003C
: C
:
: TB
DB 202
Evaluate ZP slave life list entry.
D 2.7
003E
0040
0042
: =
:
: TB
=SL40
ZP slave life list bit for station 40; if list entry
was updated, set station error bit.
0044
0046
0048
: =
:
: TB
=SL41
004A
004C
004E
: =
:
: BE
=SL42
EWA 4NEB 812 6112-02
D 2.6
D 2.5
ZP slave life list bit for station 41; if list entry
was updated, set station error bit.
ZP slave life list bit for station 42; if list entry
was updated, set station error bit.
7-13
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Data Transmission Using Cyclic I/O
DB100 for PLC 1 (ZP Master)
1:
30:
101:
130:
7-14
KH
.
.
.
********************************
10:
KH
= 9B11;
11:
KH
= 1102;
.
.
.
********************************
20:
KH
= 5310;
21:
KH
= 0011;
.
.
.
KH
KH
.
.
.
********************************
110:
KH
= 10F2;
111:
KH
= 1100;
.
.
.
********************************
120:
KH
= B000;
121:
KH
= 3F00;
.
.
.
KH
S5-95U, SINEC L2
DB202 for PLC 1 (ZP Master)
Explanation
0:
1:
KM
KM
= 00000000 00000000;
= 00000000 00000000;
ZP slave life list
2:
3:
4:
KM
KM
KM
= 00000000 00000000;
= 00000000 00000000;
= 00000000 00000000;
Status of : Station 40= D 2.7;
Station 41= D 2.6;
Station 42= D 2.5
5:
6:
7:
KM
KM
KM
= 00000000 00000000;
= 00000000 00000000;
= 00000000 00000000;
Status of station 126= D 7.1
Explanation
= 1001;
********************************
ZP output area, ZP slave 40
ZP output area, ZP slave 41
ZP output area, ZP slave 42
= 0205;
.
.
********************************
.
= A011;
********************************
ZP input area, ZP slave 40
ZP input area, ZP slave 41
ZP input area, ZP slave 42
= 7A01;
********************************
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission Using Cyclic I/O
Cyclical Program for Stations 40, 41, and 42 (ZP Slaves)
The structure of the programs is identical for the three ZP slaves. It is represented only once in the
following section.
The status byte for the ZP slave is flag byte FY100. ZP DB for the ZP slave is DB100.
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Proceed as follows:
Assign parameters for programmable controller 2 (station 40), programmable controller 3
(station 41), and programmable controller 4 (station 42) as ZP slaves as described in section
7.2. The only parameters you need to adapt specifically for each programmable controller are
TLN (station number), ZPSA, and ZPSE.
Program the individual blocks as described in the following section.
Transfer blocks OB1 and DB100 to programmable controller 2 (station 40), programmable
controller 3 (station 41), and programmable controller 4 (station 42).
OB1 for PLC 2 (ZP Slave)
SEGMENT 1
0000
0001
:
: A
0002
0003
0004
: .
: .
: .
0005
: BE
Explanation
0000
Monitoring of the ZP data exchange via STB bit
‘Error at ZP data exchange with
ZP master’
Specific reaction to error via
user program
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F 100.7
DB100 for PLC 2 (ZP Slave)
Explanation
***********************************
1:
KH
= A011;
.
.
.
ZP output area (ZP slave 40) to ZP master
10:
KH
= 10F2;
11:
KH
= 1001;
***********************************
.
.
.
20:
KH
ZP input area from ZP master
= 9B11;
***********************************
Set the operating mode switches of the ZP master and the three ZP slaves to RUN.
Check the data transmission. This is done best with a programmer:
Connect each
programmable controller to a programmer and display the data blocks and the status bytes.
Refer also to section 3.3 “Starting up a System”.
Appendix 5 gives you information on cycle delay times in the programmable controllers due to data
transmission.
EWA 4NEB 812 6112-02
7-15
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8
Data Transmission by Accessing Layer 2 Services
8.1
Characteristic Features of Layer 2 Access Data Transmission
8.2
Types and Characteristic Features of the Layer 2 Services
8.3
Assigning the S5-95U Parameters for Data Communications
8.4
FBs for Managing All Layer 2 Services
8.5
....
8 - 2
......
8 - 5
.....
8 - 9
....................
8 - 11
Sending Data to a Station (SDA Service)
...................
8 - 15
8.6
Sending Data to Several Stations (SDN)
...................
8 - 19
8.7
Holding Data for Fetching Once Only by a Station
(RUP_SINGLE Service)
..............................
8 - 23
Holding Data Ready for Fetching Several Times Over by One
or More Stations (RUP_MULTIPLE) . . . . . . . . . . . . . . . . . . . . . .
8 - 26
Sending Data and Fetching Data from a Station (SRD Service)
8 - 29
8.8
8.9
EWA 4NEB 812 6112-02
...
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Figures
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
8-7.
8-8.
8
8
8
8
8
-
2
3
6
8
9
8 - 15
8 - 16
8
8
8
8
8
8
8
8
-
19
20
23
24
26
27
29
30
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8-9.
8-10.
8-11.
8-12.
8-13.
8-14.
8-15.
Example: Hardware Configuration Using Layer 2 Services . . . . . . . . . . . . .
Function Model Using Layer 2 Services . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Job Numbers (A-NR) for Accessing Layer 2 Services via SAPs
....
Request, Confirmation and Indication Structures . . . . . . . . . . . . . . . . . . .
Schematic: Data Transmission Using Layer 2 Services . . . . . . . . . . . . . . .
Sending and Receiving Data with Acknowledgement or
Confirmation (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of Requests, Confirmations and Indications for the SDA Service
.
Sending and Receiving Data without Acknowledgement or
Confirmation (SDN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure of Requests, Confirmations and Indications for the SDN Service .
Holding Data Ready for Fetching with the RUP_SINGLE Service
.......
Request and Confirmation Structures for the RUP_SINGLE Service
.....
Holding Data Ready for Fetching with the RUP_MULTIPLE Service
.....
Request and Confirmation Structures for the RUP_MULTIPLE Service
...
Sending and Fetching Data with the SRD Service . . . . . . . . . . . . . . . . . .
Structure of Requests, Confirmations and Indications for the SRD Service .
Tables
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
8-7.
8-8.
8-9.
8-10.
Layer 2 Services of the L2 Interface of the S5-95U
.................
Defining Job Numbers in the L2 FBs . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Layer 2 Services, DB1 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering Parameters for Layer 2 Services . . . . . . . . . . . . . . . . . . . . . . . .
link_status Messages for SDA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
link_status Messages for SDN
...............................
link_status Messages for the RUP_SINGLE Service
...............
link_status Messages for the RUP_MULTIPLE Service
..............
link_status Messages for the RUP_MULTIPLE Service
..............
link_status Messages (Indications) for the SRD Service . . . . . . . . . . . . . .
8
8
8
8
8
8
8
8
8
8
-
5
9
10
10
17
21
24
27
31
31
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8
Data Transmission by Accessing Layer 2 Services
Data Transmission by Accessing Layer 2
Services
In this chapter, you will learn
•
•
•
the basic principles underlying this type of transmission,
how to assign the PLC's parameters, and
what the STEP 5 programs for this type of transmission look like (examples).
The S5-95U with integral SINEC L2 interface has a control processor and a communications
processor.
Certain parts of the communications section have defined designations.
The SINEC L2 transmission technology is referred to as "layer 1". The SINEC L2 interface of the
S5-95U is implemented in RS 485 technology ( section 1.6).
The operating system software of the communications processor is referred to as ”layer 2”. Some
of these operating system programs (layer 2 services) can be invoked direct from the STEP 55
program.
The layer 2 services are also referred to as FDL (Fieldbus Data Link) services.
A layer 2 access must be activated before a layer 2 service can be invoked. You do this by
assigning parameters in DB1 and programming a call in the control program. You can invoke several
layer 2 services or invoke the same service more than once simultaneously. In this case, you must
program several layer 2 accesses in DB1.
Data transmission by accessing layer 2 services is ideal for communications between S5-95Us and
PROFIBUS-compatible programmable controllers or field devices that do not support the standard
connection, PLC-to-PLC connection or cyclic I/O types of transmission.
S5-95U programmable controllers can also communicate with each other over layer 2 accesses, in
which case the user-friendly standard connection, PLC-to-PLC connection or cyclic I/O types of
transmission can be used ( chapters 4, 6 and 7). Compared with the types of data transmission
mentioned above, the programming overhead for layer 2 accesses is high.
EWA 4NEB 812 6112-02
8-1
Data Transmission by Accessing Layer 2 Services
8.1
•
S5-95U, SINEC L2
Characteristic Features of Layer 2 Access Data Transmission
Layer 2 accesses are used for communications between active stations or between active and
passive stations.
In DB1, you can program up to 23 layer 2 accesses for sending data and up to 23 layer 2
accesses for receiving data.
You can send/receive up to 242 bytes of net data per job.
You can send data in parallel over all configured layer 2 accesses.
You can receive data in parallel over all configured layer 2 accesses.
To communicate over configured layer 2 accesses, you need the integral standard function
blocks L2-SEND and L2-RECEIVE ( chapter 5).
You must specify the following parameters for L2-SEND:
- a job number to identify a particular layer 2 access
- the data you wish to send
You must specify the following parameters for L2-RECEIVE:
- a job number to identify a particular layer 2 access
- where the data received are to be stored.
•
•
•
•
•
•
•
Figure 8-1 shows a typical hardware configuration. The examples in section 8.3 refer to PLC 1 and
PLC 2 in this configuration.
Active
station
CP 5410
(for PC)
Layer 2 access
S5-95U
(PLC 1)
Layer 2 access
S5-95U
(PLC 2)
...
Bus
Passive
station
None
Figure 8-1. Example: Hardware Configuration Using Layer 2 Services
Principle of Operation
The principle of operation of layer 2 services is described in the following section, and the function
model is shown in Figure 8-2.
The principle of operation of the various layer 2 services is explained in detail in the relevant
sections of the manual (from section 8.5 onwards).
8-2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission by Accessing Layer 2 Services
e.g. S5-95U
Receiving PLC
Active station on the LAN bus
No
'Send' status byte for job
number
(in flag area)
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
'Send' status byte for job
number
(in flag area)
Send allowed?
Receive viable?
No
'Receive' status byte for
job number
(in flag area)
Receive viable?
Yes
Yes
L2-SEND
L2-RECEIVE
L2-RECEIVE
Job number
Job number
Mailbox
Mailbox
Mailbox
DB 41
DB 22
DB 33
DB 42
DB 23
DB 34
DB 45
DB 24
DB 34
Net data 0 to 242
bytes in the case of
SRD service
Indication header
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
Net data
0 to 242 bytes
Confirmation header
No
Yes
Job number
Request header
e.g. S5-95U
Active or passive station on the LAN bus
aaaaaaaa
aaaaaaaa
Sending PLC
Net data
0 to 242 bytes
LAN bus
Figure 8-2. Function Model Using Layer 2 Services
Explanation of Figure 8-2:
If there are no longer any jobs being executed over a layer 2 access, the 'Send' status byte
indicates that sending is permissible. L2-SEND is invoked in the STEP 5 program (request).
L2-SEND receives the following information in the parameters passed to it:
• Job number of the layer 2 access used (programmed in DB1)
• The mailbox in which an 8-bit header and the net data to be transmitted are located.
The net data are send to the addressed receiver over the LAN. At the receiver end, a bit in the
'Receive' status byte indicates that data have arrived. The data (in the form of an indication) are
fetched from the receiver with L2-RECEIVE.
Each request is confirmed. The confirmation header indicates whether the job has been executed
with or without error(s).
(In the case of the SRD service, the confirmation consists of the header and net data requested by
the receiver.)
The "receive viable" bit is set in the 'Send' status byte of the transmitter. The confirmation is
fetched with L2-RECEIVE.
EWA 4NEB 812 6112-02
8-3
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Request, Indication and Confirmation
Request:
A layer 2 service is invoked from the STEP 5 program with a request. The request consists of the
request header and the net data to be sent.
The request header is interpreted by the communications processor of the sending PLC. The
request header defines the layer 2 service to be used and the destination to which the net data are
to be sent.
Indication:
The receiver receives the net data in the form of an indication. The indication consists of the
indication header and the net data received.
The indication header contains the following information on the data received:
• The layer 2 service used,
• The priority with which the data were sent, and
• The station from which the data were sent.
Confirmation:
The sender receives information on whether the layer 2 service has been executed correctly or with
error(s) in the form of a confirmation.
In the case of the layer 2 SRD service ( section 8.9), the confirmation consists of the confirmation
header and the net data received.
For all other layer 2 services ( sections 8.5 to 8.8), the confirmation consists only of an 8-byte
confirmation header.
The confirmation header tells you whether the job has been executed correctly or with error(s), and,
in the latter case, which error(s) has (have) occurred.
Section 8.2 contains a description of the types and characteristic features of the layer 2 services
and the format of the various headers.
8-4
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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S5-95U, SINEC L2
8.2
Layer 2 Service
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
Types and Characteristic Features of the Layer 2 Services
You have the following layer 2 services at your disposal:
Table 8-1. Layer 2 Services of the L2 Interface of the S5-95U
When Do You Use this
Layer 2 Service?
Service can be Used if
the S5-95U is
Active
SDA
(Send Data with
Acknowledge)
Active station sends data
to one active or passive
station.
X
8.5
SDN
(Send Data with No
Acknowledge)
Active station sends data
to one or more active or
passive stations.
X
8.6
RUP_SINGLE
(Reply UPdate
SINGLE)
Active or passive station
holds data so that they can
be fetched once by an
active station.
RUP_MULTIPLE
(Reply UPdate
MULTIPLE)
Active or passive station
holds data so that they can
be fetched several times
by one or more active
stations.
SRD
(Send and Request
Data with Reply)
Active station sends data
and/or fetches data from
one active or passive
station.
X
Description in
Section
Passive
X
X
8.7
X
X
8.8
8.9
8-5
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
SAPs and Job Numbers
The communications processor has buffers for the data to be sent and the data received. These
buffers are referred to as SAPs (Service Access Points to layer 2)
An SAP is addressed by assigning it a number. You have the SAPs with the numbers 33 to 54 and
64 (default SAP) at your disposal for invoking layer 2 services. To enable a SAP to be referenced
from the STEP 5 program, a layer 2 access must be configured for it. You define the SAP number
in DB1 for this purpose ( section 8.3)
The interaction between STEP 5 programs and SAPs is explained in Figure 8-3. Figure 8-3 is
explained on page 8-7.
Sending PLC (active)
STEP 5
program
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
DB1
Communications
processor
SAPs
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
Control
processor
.
.
.
Request via L2SEND, e.g. via
A-NR 33
Confirmation via
L2-RECEIVE and
A-NR 33
SINEC L2
interface
LAN
bus
33
54
•
•
•
•
•
•
•
•
•
•
64
Receiving PLC (active or passive)
Control
processor
Communications
processor
SINEC L2
interface
SAPs
DB1
33
STEP 5
program
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
.
.
.
Indication via
L2-RECEIVE, e.g.
via A-NR 154
54
•
•
•
•
•
•
•
•
•
•
64
Figure 8-3. Using Job Numbers (A-NR) for Accessing Layer 2 Services via SAPs
8-6
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Data Transmission by Accessing Layer 2 Services
Explanation of Figure 8-3:
A request is passed to SAP 33 from the STEP 5 program by L2-SEND.
Job number (A-NR) 33 indicates that L2-SEND accesses SAP 33.
In the case of a request, the following always applies:
Job number = SAP number
The communications processor sends the net data of the request to the receiver and deposits them
in the SAP. This SAP number (destination SAP) must be specified in the request header ("36H" for
SAP number 54 in the example). If you select the default SAP (SAP 64) as the destination SAP, you
must specify "FH" in the request header for SAP number 64.
The receiver can accept the indication (data received) from SAP 54 and write it into the STEP 5
program. L2-RECEIVE fetches the indication with job number 154.
In the case of an indication, the following always applies:
Job number = SAP number + 100
The sender receives a confirmation via the layer 2 service processed. L2-RECEIVE fetches the
confirmation with job number 33.
In the case of a confirmation, the following always applies:
Job number = SAP number
You define the job numbers when assigning the parameters to L2-SEND and L2-RECEIVE (
chapter 5)
Storing the Send and Receive Data
The frame to be sent (request) consists of the 8-byte header (bytes 0 to 7) and the net data of up
to 242 bytes.
The following information must be entered in the request header by the STEP 5 program:
• The type of layer 2 service requested
(SDA, SDN, SRD, RUP_SINGLE or RUP_MULTIPLE)
• The priority of the send message
("low" or "high"; Section 1.3 "Time Management of the Network")
• The SAP number of the receiver (= destination SAP)
• The address of the destination station
The communications processor confirms the request automatically. The confirmation header
contains new information in the form of the link_status, which indicates whether the job has been
carried out correctly or with error(s).
In the case of the layer 2 service SRD, the confirmation consists of the header and up to 242 bytes
of net data.
The indication (frame received) consists of the 8-byte header (bytes 0 to 7) with the address of the
source station and up to 242 bytes of net data.
Figure 8-4 shows the general structure of a request (frame to be sent), confirmation and indication
(frame received), in each case with header. The designation of the header bytes conforms to the
PROFIBUS standard.
EWA 4NEB 812 6112-02
8-7
Data Transmission by Accessing Layer 2 Services
Request
Confirmation
0
aaaaaa
aaaaaa
aaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
irrelevant
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaa
7
8
...
249
rem_add_segment
Logical segment address;
always enter FFH
(no other segments can be
currently addressed)
Send data
(0 to 242 bytes)
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
irrelevant
6
7
8
...
249
Bits 0 to 3
0
SAP No. of the receiver =
destination SAP
(hexadecimal)
rem_add_station
Address of the destination
station (hexadecimal)
rem_add_segment
Logical segment address;
is always FFH
(no other segments can be
currently addressed)
Receive data in connection with
SRD service (0 to 242 bytes)
aaaaaaaa
aaaaaaaa
aaaa
5
Bits 4 to 7
service_class
Priority of the
send message
3
Bits 4 to
service_class
Priority of
receive frame
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
4
2
SAP No. of the sender =
source SAP
(hexadecimal)
4
5
aaaaaaaa
aaaaaaaa
aaaa
rem_add_station
Address of the destination
station (hexadecimal)
link_status
OK or error message; indicates
success or failure of preceding
request
aaaaaaaa
aaaaaaaa
aaaa
SAP No. of the receiver =
destination SAP
(hexadecimal)
irrelevant
service_code
Type of service provided
aaaaaaaa
aaaaaaaa
aaaa
0
1
6
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
6
Bits 0 to 3
Indication=02H
(indication that data have been
received)
service_code
Type of service provided
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
5
3
Bits 4 to 7
service_class
Priority of
send frame
user_id
ID assigned in connection with
a request
2
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
4
1
com_class
aaaaaa
aaaaaa
aaa
aaaaaa
aaaaaa
aaaaaaaa
aaaaaaaa
aaaa
service_code
Type of service requested
3
0
FDL_Confirmation=01H
(Confirmation from layer 2
firmware following request)
user_id
User-definable ID
(echoed in a confirmation)
2
com_class
7
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaa
com_class
aaaaaa
aaaaaa
aaa
Byte
FDL_Request=00H
(request for layer 2 service)
1
Indication
Byte
aaaaaa
aaaaaa
aaa
aaaaaa
aaaaaa
aaa
Byte
0
S5-95U, SINEC L2
8
...
249
Bits 0 to 3
0
rem_add_station
Address of source station
(hexadecimal)
rem_add_segment
Logical segment address;
is always FFH
(no other segments can be
currently addressed)
Receive data
(0 to 242 bytes)
Figure 8-4. Request, Confirmation and Indication Structures
You can store the requests and indications (up to 250 bytes each) in the flag area or data area.
In view of the relatively large maximum amount of data, however, we advise you to use only the
data area.
Section 8.5 describes the structure of requests, confirmations and indications for the special layer 2
services.
As a prerequisite for using layer 2 services, you must first
• specify an SAP number in DB1 ( section 8.3)
• define two status bytes in DB1 ( section 8.3)
• assign L2-SEND and L2-RECEIVE their parameters ( section 8.3, chapter 5)
• create DBs for the request, the confirmation and the indication ( from section 8.5 ff.).
8-8
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.3
Data Transmission by Accessing Layer 2 Services
Assigning the S5-95U Parameters for Data Communications
There is no default setting in DB1 for layer 2 accesses. You assign the following parameters in DB1:
• The location of a 'Send' status byte for L2-SEND and L2-RECEIVE with the corresponding SAP
number.
• The location of a 'Receive' status byte for L2-RECEIVE with the corresponding SAP number.
All STBs must be in the flag area. The status byte flags the status of the send and/or receive job,
and informs you of any errors ( section 5.4).
The byte following the status byte is always reserved as the length byte. This byte indicates how
many bytes of data have been received.
Defining the job numbers for a PLC ( chapter 5):
Define a job number for the request and confirmation in L2-SEND.
Define a job number in L2-RECEIVE for the indication.
The following applies to a PLC:
A-NR for request/confirmation = SAP number
A-NR for indication = SAP number + 100.
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
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aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaa
Table 8-2. Defining Job Numbers in the L2 FBs
Job
Job
numbers
in the
L2 FBs
Send Job with L2SEND
Fetch Confirmation
with L2-RECEIVE
Fetch Indication with
L2-RECEIVE
33
33
133
34
.
.
.
34
.
.
.
134
.
.
.
54
54
154
64
64
164
Figure 8-5 gives an example of the interaction of DBs, STBs and L2 FBs for data communications
using layer 2 services.
In the example, the request is sent with L2-SEND and A-NR 48. The confirmation is fetched with ANR 48 and L2-RECEIVE. The status byte for both jobs is FY 77. The indication is fetched with A-NR
149 and L2-RECEIVE; the status byte is FY 79.
'Send' status byte FY 77
DB1
SL2:
...
STBS 48 MB77
STBR 49 MB79
...
Length byte FY 78
'Receive' status byte FY 79
Length byte FY 80
L2-SEND
.
A-NR : KY 0,48
.
DBNR : KY 0,21
QANF : KF 0
.
DB21
DW 0
.
..
L2-RECEIVE
.
A-NR : KY 0,48
.
DBNR : KY 0,22
ZANF : KF 1
.
DB22
DW 1
.
..
L2-RECEIVE
.
A-NR : KY 0,149
.
DBNR : KY 0,23
ZANF : KF 1
.
DB23
DW 1
.
.
.
Figure 8-5. Schematic: Data Transmission Using Layer 2 Services
EWA 4NEB 812 6112-02
8-9
156:
KS
='
168:
180:
192:
KS
KS
KS
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
='SDT 1 12 SDT 2 360
';
204:
216:
.
.
.
KS
KS
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*
**
156:
168:
180:
KS
KS
KS
='
SL2: TLN 1
STA AKT';
=' BDR 500
HSA 10 TRT ';
='5120
SET 0
ST 400 ';
192:
204:
216:
.
.
.
KS
KS
KS
='SDT 1 12 SDT 2 360
='STBS 48 MB77
='STBR 49 MB79
8-10
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Data Transmission by Accessing Layer 2 Services
Parameter
Argument
Block ID: SL2:
n
MBx
MBy
33 to 54, 64*
1 to 253
1 to 253
Table 8-4.
DB1 PLC 1
SL2: TLN 2
='STBS 48 MB77
='STBR 48 MB79
';
';
';
STA AKT';
';
';
S5-95U, SINEC L2
The procedures to follow for entering, modifying and transferring DB1 are described in detail in
section 1.4.
DB1 Parameters for Layer 2 Services
Table 8-3. Layer 2 Services, DB1 Parameters
Meaning
SINEC L2
STBS
n MBx
SAP number and location of the 'Send' status byte
STBR
n MBy
SAP number and location of the 'Receive' status byte
Argument
Permiss. range
Explanation
SAP number
Flag byte**
Flag byte**
SAP 64 is the default SAP
The next flag is reserved as length flag.
Retentive flags are also overwritten with 00H on a cold PLC restart.
Example: Two S5-95Us communicating with each other using layer 2 services.
Entering Parameters for Layer 2 Services
Explanation
Basic L2 parameters ( for description see 1.4)
Sending via SAP No. 48, 'Send' STB = FY 77;
Receiving via SAP No. 49,
'Receive' STB = FY 79
(FY 78 and 80 are reserved as length bytes)
DB1 PLC 2
Basic L2 parameters ( section 1.4)
Sending via SAP No. 48, 'Send' STB = FY 77;
Receiving via SAP No. 49,
'Receive' STB = FY 79
(FY 78 and 80 are reserved as length bytes)
Once you have assigned the parameters, you must develop the control program for data
communications. You will learn how to do this in the next section.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.4
Data Transmission by Accessing Layer 2 Services
FBs for Managing All Layer 2 Services
FB223 and FB224 enable you to transmit data using layer 2 services with minimal programming
overhead. You only need to program these FBs once for an S5-95U. The FBs can be used for all
layer 2 services.
Structure of the Control Program for Sending the Request and Fetching the
Confirmation in FB223
Prerequisites for executing FB223 according to the following schematic:
• You have programmed DB33 with header and send data.
• You have set the send initiation bit in OB1 and invoked FB223 (OB1 is shown in the various
sections on the services, namely, 8.5 to 8.9).
Job completed without error (STBS bit 2 = 1)?
Yes
No
Reset send initiation bit
Send job executing (STBS bit 1 = 1)?
Yes
No
Invoke L2-SEND
Evaluate parameter assignment error byte
RECEIVE viable (STBS bit 0 = 1)?
Yes
No
Invoke L2-RECEIVE
Evaluate parameter assignment error byte
Output link_status
End
You must evaluate the link_status once FB223 has executed.
Structure of the Control Program for Fetching the Indication in FB224
Prerequisites for executing FB224 according to the following schematic:
• You have generated DB34.
• You have set the "EMPF" bit in OB1 and invoked FB224 (OB1 is shown in the various sections
on the services, namely, 8.5 to 8.9).
"EMPF" bit set or RECEIVE viable (STBR bit 0 = 1)?
Yes
No
Invoke L2-RECEIVE
Evaluate parameter assignment error byte
Yes
No parameter assignment error; STBR error in L2-RECEIVE?
No
"EMPF" bit is reset
End
You must evaluate the link_status once FB224 has executed.
EWA 4NEB 812 6112-02
8-11
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Meaning of the Parameters of FB223 and FB224:
Input parameter bit
The request job is initiated when this bit is set. Set the bit before invoking FB223.
FB223 resets the bit once L2-SEND and L2- RECEIVE have executed without error.
”LSTA”:
Output parameter byte
FB223 tells you the link_status of the confirmation. The link_status indicates the
success or failure of the preceding request. You can evaluate the link_status in flag
byte 9.
”EMPF”:
Input parameter bit
This parameter enables receipt of an indication. Set this bit before invoking FB224.
FB224 resets the bit once the indication has been received without error(s).
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”ANST”:
FB223
Segment 1
Name :SENDER
Des
Des
0000
:ANST
:LSTA
I/Q/D/B/T/Z: I
I/Q/D/B/T/Z: Q
EDGE "Completed without error"
STBS "Job completed without error"
Auxiliary edge flag
Edge "Job completed without error"
77.2
:AN
:=
:
F
F
20.0
20.1
:A
:=
:
F
F
77.2
20.0
:A
:RB
:
F
20.1
=ANST
Edge "Job completed without error"
Reset send initiation bit
:A
:AN
:R
=ANST
F
77.1
F
20.0
Interrogation of send initiation bit
STBS "Job executing"
Reset auxiliary edge flag
:L2-SEND
:
KY 0,48
:
KS DB
:
KY 0,33
QANF :
QLAE :
:
:
8-12
Send FB for the SDA, SDN, SRD,
RUP_SINGLE and RUP-MULTIPLE services
F
:
:
:JC FB 252
Name
A-NR
QTYP
DBNR
BI/BY/W/D: BI
BI/BY/W/D: BY
The request DB is sent in this FB and the
confirmation of the respective
services fetched
:
:
:
:
:
:A
Explanation
KF +1
KF +8
Invoke L2-SEND
Job number for request = 48
Send data are in
DB33
starting at DW 1
Send length: 8 words in this case
Length = 8-byte header + net data
(in the case of SRD without net data: 4 words)
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
FB223 (Cont.)
:
:A
:=
:
:
F
255.0
F
20.6
:A
:=
:
F
F
255.0
20.7
:C
:
:L
:T
DB
33
DR 11
=LSTA
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
Explanation
*****
Save parameter assignment error
byte for subsequent evaluation
*****
:A
F
77.0
:JC FB 253
Name :L2-REC
If STBS "Receive viable" set
Invoke L2-RECEIVE
A-NR :
ZTYP :
DBNR :
KY 0,48
KS DB
KY 0,33
ZANF :
ZLAE :
:
KF +10
KF -1
Job number for confirmation = 48
Data are in
DB33
starting at DW 10 (4-byte header)
*****
Save parameter assignment error
byte for subsequent evaluation
*****
Open working DB (DB33 in this case)
Output link_status of the
confirmation
:
:BE
8-13
S5-95U, SINEC L2
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Data Transmission by Accessing Layer 2 Services
FB224
Segment 1
Explanation
0000
Fetch indication
Name :EMPFANG
Bez :EMPF
I/Q/D/B/T/Z: I
BI/BY/W/D: BI
Only the indications of layer 2 services are
fetched in this FB
:
:
:
:ON
:ON
:
=EMPF
F
79.0
:BEC
:
:JC FB 253
Name :L2-REC
A-NR :
KY 0,148
ZTYP :
KS DB
DBNR :
ZANF :
ZLAE :
KY 0,34
KF +10
KF -1
:
:A
F
255.0
:=
F
20.7
:
:AN
:AN
F
F
255.0
79.3
:RB
:
:BE
=EMPF
If receive is not enabled or the
STBR bit "Receive viable"
is not set
End
Invoke L2-RECEIVE
Job number for indication = 148
Data are stored in DB
DB34 in this case
Data are stored starting at DW 10
”Wildcard length”
*******
Save parameter assignment error
byte for subsequent evaluation
*******
If no parameter assignment error has
occurred and STBR bit "Completed with
error" is not set, reset receive enable
In the following sample programs for the various layer 2 services ( sections 8.5 to 8.9), data
are interchanged between two stations on the SINEC L2 LAN. Both stations are S5-95Us and have
the station addresses TLN 1 and TLN 2.
The parameters to be assigned to the layer 2 accesses are listed in section 8.3, Table 8-4. It is
assumed that you have already configured the DB1s.
Once you have completely developed your program for using a layer 2 service, start up your PLC.
Proceed as follows:
Switch the mode selector of the PLC to RUN.
Data transmissions are best checked by means of a programmer. Connect a programmer to
each PLC and have it display the DBs, the status bytes and the parameter assignment error
byte. (The format of the status bytes and parameter assignment error byte are shown in
chapter 5.).
Read also section 3.3 "Starting Up a System".
Appendix E contains the cycle delay times of the PLC in connection with data transmissions.
8-14
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.5
Data Transmission by Accessing Layer 2 Services
Sending Data to a Station (SDA Service)
The SDA (Send Data with Acknowledge) layer 2 service is used if an active station is to send data
to an active or passive station.
Data transmission schematic ( Figure 8-6):
The request (header + net data to be transmitted) in the flag or data area is sent with L2-SEND
(= request an layer 2).
The 'Receive" status byte informs the receiver that an indication has arrived.
The receiver fetches the indication (header + net data received) with L2-RECEIVE.
The 'Send' status byte informs the sender that a confirmation has been transmitted.
The sender fetches the confirmation (= header) with L2-RECEIVE.
LAN bus
aaaaaaaaaa
aaaaaaaaaa
Sender control program (Station 1 in the
example)
Request SDA
Header with 8 bytes
In example: DB33,
DW 1 to DW 4
Request
SEND
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaa
SDA request
(Data)
S5-95U
Receiver control program (Station 2 in the
example)
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
S5-95U
Indication
(Data)
STBR:...1H
STBS:...2H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaa
Data
In example: DB33,
DW 5 to DW 8
Confirmation
STBS:...4H
aaaaaaaaaa
aaaaaaaaaa
RECEIVE
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
RECEIVE
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
Confirmation header
8 bytes
In example: DB33,
DW 10 to DW 13
(acknowledge)
aaaaaaaaaa
aaaaaaaaaa
STBS:...3H
STBR:...4H
Indication header
8 bytes
In example: DB34,
DW 10 to DW 13
Data
In example: DB34,
DW 14 to DW 17
Figure 8-6. Sending and Receiving Data with Acknowledgement or Confirmation (SDA)
Figure 8-7 describes the structure of requests, confirmations and indications for the SDA service.
EWA 4NEB 812 6112-02
8-15
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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
irrelevant
Bits 4 to 7
service_class
Priority of
send message
low=0H or
high=1H
8
..
.
249
8-16
Bits 0 to 3
0
5
Destination SAP 0 to 62,
FF (=default SAP 64)
6
rem_add_station
Address of the destination
station (1 to 126)
7
rem_add_segment
Logical segment address;
always enter FFH
2
3
4
5
6
7
link_status
( Table 8-5 )
Bits 4 to 7
service_class
Priority of the
send message
low=0H or
high=1H
Send data
(0 to 242 bytes)
aaaaaaaa
aaaaaaaa
service_code
Type of service:
SDA=00H
aaaaaaaa
aaaaaaaa
1
Bits 0 to 3
0
Destination SAP 0 to 62,
FF (=default SAP 64)
rem_add_station
Address of the destination
station (1 to 126)
rem_add_segment
Logical segment address;
is always FFH
aaaaaaaa
aaaaaaaa
user_id
ID assigned in connection with
a request
aaaaaaaa
aaaaaaaa
FDL_Request=00H
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
com_class
aaaaaaaa
aaaaaaaa
3
0
aaaaaaaa
aaaaaaaa
4
Byte
aaaaaaaa
aaaaaaaa
service_code
Type of service requested
SDA=00H
aaaaaaaa
aaaaaaaa
aaaa
Request
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
2
aaaaaaaa
aaaaaaaa
aaaa
user_id
User-definable ID
aaaaaaaa
aaaaaaaa
aaaa
1
aaaaaaaa
aaaaaaaa
aaaa
com_class
aaaaaaaa
aaaaaaaa
aaaa
0
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
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aaaaaaaaaa
Byte
aaaaaaaa
aaaaaaaa
aaaa
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aaaa
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aaaaaaaaaaa
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Confirmation
Byte
Indication
0
Confirmation=01H
2
4
5
6
7
8
..
.
249
com_class
Indication=02H
1
irrelevant
service_code
Type of service:
SDA=00H
3
irrelevant
Bits 4 to 7
service_class
priority of
receive frame
low=0H or
high=1H
Bits 0 to 3
0
Source SAP 0 to 62,
FF (=default SAP 64)
rem_add_station
Address of source station
(1 to 126)
rem_add_segment
Logical segment address;
is always FFH
Receive data
(0 to 242 bytes)
Must be specified by the user in the request header
Figure 8-7. Structure of Requests, Confirmations and Indications for the SDA Service
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
Value of
link_status
*
.
.
:JU FB 223
Name :SENDER
ANST :
F
0.0
LSTA :
:
:
FY
9
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
link_status Message in the Confirmation Header
Table 8-5. link_status Message for SDA
Abbreviation
(PROFIBUS)
OB1 (Sending PLC)
Meaning
00H
ok
Positive acknowledgement, service executed
01H
ue
Negative acknowledgement; remote PLC is in STOP mode
Prerequisite: Destination station is an S5-95U and the connection
has been properly configured at the destination station
02H
rr
Negative acknowledgement; resources of remote FDL control not
available
03H
rs
service_code or rem_add_station not activated at the remote
station
11H
na
No response from remote station or response not plausible
15H
iv
- Illegal parameters in the request header or
- Local station is passive or
- Destination station is own station address or
- If own SAP = default SAP*: destination SAP is not default SAP
or
- own SAP default SAP*: destination SAP is default SAP
SAP 64 is defined as the default SAP.
Invoking FB223 for SDA
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the SDN service
Flag byte contains the link_status of the confirmation
:BE
8-17
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Data Transmission by Accessing Layer 2 Services
.
.
:JU FB 224
Name :EMPFANG
Fetch indication ( section 8.4)
EMPF :
:
:
Enable receive
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
.
.
.
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
8-18
F
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
0.1
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0000;
000,000;
000,000;
000,048;
002,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
001,000;
000,000;
000,048;
002,255;
0000;
0000;
0000;
002,000;
000,000;
000,048;
001,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
S5-95U, SINEC L2
Invoking FB224 for SDA
OB1 (Receiving PLC)
Explanation
.
.
:BE
Storing Request and Confirmation at the Sender
DB33
Explanation
****Request frame****
com_class / user_id
service_code / irrelevant
service_class/destination SAP
rem_add_station / rem_add_segm
Data bytes 1 and 2
Data bytes 3 and 4
Data bytes 5 and 6
Data bytes 7 and 8
****Confirmation frame****
com_class / user_id
service_code / link_status
service_class / destination SAP
rem_add_station / rem_add_segm
Storing the Indication at the Receiver
DB34
Explanation
****Indication frame****
com_class / irrelevant
service_code / irrelevant
service_class / source SAP
rem_add_station / rem_add_segm
Receive data from sender
.
.
.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.6
Data Transmission by Accessing Layer 2 Services
Sending Data to Several Stations (SDN)
The SDA (Send Data with No Acknowledge) layer 2 service is used if an active station is to send
data to several active or passive stations (multicasting).
Data can also be sent to one active or passive station with the SDN service. However, SDA is
better suited for this ( section 8.5).
SDN has the following disadvantage compared with SDA:
The confirmation received by the sender contains no information on whether the data have been
correctly received or not. The sender only receives confirmation from its local communications
processor that the data have been sent off properly.
Prerequisites for multicasting:
• You must assign the same receive SAP in the DB1s of all receiving stations ( section 8.3).
• You must enter the global address for multicasting "127" in byte 6 of the request header.
Data transmission schematic ( Figure 8-8):
The request (header + net data to be transmitted) in the flag or data area is sent with L2-SEND
(request to layer 2).
The 'Receive" status byte informs all receivers that an indication has arrived.
Each receiver fetches the indication (header + net data received) with L2-RECEIVE.
The 'Send' status byte informs the sender that a confirmation has been transmitted.
The sender fetches the confirmation (= header) with L2-RECEIVE.
LAN Bus
aaaaaaaaaa
aaaaaaaaaa
Sender control program (Station 1 in the
Request SDN
Header with 8 bytes
In example: DB33,
DW1 to DW4
Request
SEND
SDN request
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
(Data)
S5-95U
Receiver control program (Station 2 in the
aaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaa
aaaaaa
aaaaaaaaaa
aaaaaaaaaa
S5-95U
Indication
(Data)
STBR:...1H
STBS:...2H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaa
Data
In example: DB33,
DW 5 to DW 8
Confirmation
STBS:...4H
aaaaaaaaaa
aaaaaaaaaa
RECEIVE
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
RECEIVE
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
Confirmation header
8 bytes
In example: DB33,
DW 10 to DW 13
(acknowledge)
aaaaaaaaaa
aaaaaaaaaa
STBS:...3H
STBR:...4H
Indication header
8 bytes
In example: DB34,
DW 10 to DW 13
Data
In example: DB34,
DW 14 to DW 17
Figure 8-8. Sending and Receiving Data without Acknowledgement or Confirmation (SDN)
EWA 4NEB 812 6112-02
8-19
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
4
Bits 4 to 7
service_class
Priority of
send frame
low=0H or
high=1H
8
...
249
8-20
Bits 0 to 3
0
Destination SAP 0 to 62,
FF (=default SAP 64)
6
rem_add_station
Address of the destination
station (1 to 126 or 127 for
multicast)
7
rem_add_segment
Logical segment address;
always enter FFH
Bits 4 to 7
service_class
Priority of the
send frame
low=0H or
high=1H
Destination SAP 0 to 62,
FF (=default SAP 64)
aaaaaa
aaaaaa
service_code
Type of service:
SDN=01H
aaaaaa
aaaaaa
link_status
( Table 8-6 )
aaaaaa
aaaaaa
0
FDL_Request=00H
1
2
3
4
5
6
Source SAP 0 to 62,
FF (=default SAP 64)
rem_add_station
Address of the destination
station (1 to 126)
rem_add_station
Address of source station
(1 to 126)
rem_add_segment
Logical segment address;
is always FFH
rem_add_segment
Logical segment address;
is always FFH
7
Send data
(0 to 242 bytes)
aaaaaaaa
aaaaaaaa
com_class
user_id
ID assigned in connection with
a request
Bits 0 to 3
0
aaaaaaaa
aaaaaaaa
Byte
aaaaaa
aaaaaa
irrelevant
aaaaaa
aaaaaa
3
aaaaaa
aaaaaa
service_code
Type of service requested:
SDN=01H
aaaaaaaa
aaaaaaaa
aaaa
Request
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
2
aaaaaaaa
aaaaaaaa
aaaa
user_id
User-definable ID
aaaaaa
aaaaaa
aaa
1
aaaaaa
aaaaaa
aaa
com_class
aaaaaa
aaaaaa
aaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
0
aaaaaa
aaaaaa
aaa
aaaaaa
aaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
Byte
aaaaaa
aaaaaa
aaa
5
aaaaaa
aaaaaa
aaa
aaaaaaaaaaaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Figure 8-9 shows the request, confirmation and indication structures for the SDN service
Confirmation
Byte
Indication
0
Confirmation=01H
2
4
5
6
7
8
...
249
com_class
Indication=02H
1
irrelevant
service_code
Type of service: SDN=01H or
SDN Multicast=7FH
3
irrelevant
Bits 4 to 7
service_class
priority of
receive frame
low=0H or
high=1H
Bits 0 to 3
0
Receive data
(0 to 242 bytes)
Must be specified by the user in the request header
Figure 8-9. Structure of Requests, Confirmations and Indications for the SDN Service
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
S5-95U, SINEC L2
Value of
link_status
*
.
.
Name :SENDER
ANST :
F
LSTA :
FY
.
.
Name :EMPFANG
EMPF :
F
:
:JU FB 224
0.1
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
link_status Message in the Confirmation Header
Table 8-6. link_status Messages for SDN
Abbreviation
(PROFIBUS)
:JU FB 223
0.0
9
Meaning
00H
ok
Positive acknowledgement; transmission of data from the
sending (local) station completed
15H
iv
- Illegal parameters in the request header or
- Local station is passive or
- Destination station is own station address or
- If own SAP = default SAP*: destination SAP is not default SAP
or
- If own SAP default SAP*: destination SAP is default SAP
SAP 64 is defined as the default SAP.
Invoking FB223 for SDN
OB1 (Sending PLC)
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the SDN service
Flag byte contains the link_status of the confirmation
:
:
:BE
Invoking FB224 for SDN
OB1 (Receiving PLC)
Explanation
.
.
Fetch indication ( section 8.4)
Enable receive
:
:BE
8-21
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaa
Data Transmission by Accessing Layer 2 Services
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
.
.
.
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
8-22
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0000;
000,000;
001,000;
000,048;
002,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
001,000;
001,000;
000,048;
002,255;
0000;
0000;
0000;
002,000;
001,000;
000,048;
001,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
S5-95U, SINEC L2
Storing Request and Confirmation at the Sender
DB33
Explanation
****Request frame****
com_class / user_id
service_code / irrelevant
service_class/destination SAP
rem_add_station / rem_add_segm
Data bytes 1 and 2
Data bytes 3 and 4
Data bytes 5 and 6
Data bytes 7 and 8
****Confirmation frame****
com_class / user_id
service_code / link_status
service_class / destination SAP
rem_add_station / rem_add_segm
Storing the Indication at the Receiver
DB34
Explanation
****Indication frame****
com_class / irrelevant
service_code / irrelevant
service_class / source SAP
rem_add_station / rem_add_segm
Receive data from sender
.
.
.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.7
Data Transmission by Accessing Layer 2 Services
Holding Data for Fetching Once Only by a Station (RUP_SINGLE
Service)
The RUP_SINGLE (Reply UPdate SINGLE) service is used for holding data for fetching in an
active or passive station. The data held can be fetched by an active station once only, using the
SRD service ( section 8.9).
Before the sender requests data from the receiver (SRD layer 2 service), the receiver must keep
the data ready in an SAP.
The receiver uses either the RUP_SINGLE or RUP_MULTIPLE service to do this ( section 8.8).
The RUP_SINGLE service holds the requested data ready for once-only fetching. If an active
station requests data cyclically, this guarantees that it always receives new data.
Reason : Once the sender has read the data out of the SAP, the latter is empty. When the SAP is
empty, i.e. no new data are yet pending, the sender receives a confirmation header
(SRD layer 2 service).
New data are written into the SAP at the next RUP_SINGLE or RUP_MULTIPLE.
Data holding procedure for the receiver ( Figure 8-10):
The request (header + net data to be held ready for fetching) in the flag or data area is sent
with L2-SEND (request to layer 2).
The 'Send' status byte informs the receiver that a confirmation has been transmitted, and the
receiver fetches the confirmation (= header) with L2-RECEIVE.
S5-95U
S5-95U
LAN bus
Receiver control program (Station 2 in the
Sender control program (Station 1 in the
Request
(Data)
SEND
RUP_SINGLE
STBS:...2H
Confirmation
STBS:...3H
Request header
8 bytes
ID: 06H
In example: DB33,
DW 1 to DW 4
Data
In example: DB33,
DW 5 to DW 8
aaaaaaaaaa
aaaaaaaaaa
aaaaa
The data are fetched by the
sender with the SRD service.
The receiver then gets an
indication, which it must fetch
with the L2-RECEIVE
( 8.9).
aaaaaa
aaaaaa
aaaaaaaaaaaaaaa
aaaaaa
aaaaaaaaaaaa
aaaaaa
aaaaaaaaaaaa
aaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa aaaaaaaa
aaaaaaaaaa aaaaaaaa
aaaaaaaaaa aaaaaaaa
aaaaa aaaa
SAP
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
RECEIVE
STBS:...4H
Confirmation
header, 8 bytes
In example: DB33,
DW 10 to DW 13
As soon as the data are read out of the
SAP, the SAP can be refilled with data
(otherwise the sender will not receive any
data the next time it attempts to fetch them).
Figure 8-10. Holding Data Ready for Fetching with the RUP_SINGLE Service
Since the receiver sends data to itself with the RUP_SINGLE service, you must specify the same
SAP in DB1 for sending and receiving ( section 8.3). The destination SAP in the request header is
irrelevant.
Figure 8-11 shows the request and confirmation structures for the RUP_SINGLE service.
EWA 4NEB 812 6112-02
8-23
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
4
7
8-24
service_code
Type of service requested:
RUP_SINGLE=06H
3
irrelevant
Bits 4 to 7
service_class
Priority of
send message
low=0H or
high=1H
8
..
.
249
Value of
link_status
Bits 0 to 3
0
5
irrelevant
6
rem_add_segment
Logical segment address;
always enter FFH
Abbreviation
(PROFIBUS)
aaaaaaaa
aaaaaaaa
aaaa
user_id
User-definable ID
aaaaaaaa
aaaaaaaa
aaaa
1
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
com_class
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
0
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaa
2
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Byte
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaa
aaaaaaaa
aaaa
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Request
Byte
Confirmation
0
FDL_Request=00H
1
2
3
4
irrelevant
7
com_class
Confirmation=01H
user_id
ID assigned in connection with
a request
service_code
Type of service:
RUP_SINGLE=06H
link_status
( Table 8-7 )
Bits 4 to 7
service_class
Priority of the
send message
low=0H or
high=1H
Bits 0 to 3
0
5
irrelevant
6
irrelevant
rem_add_segment
Logical segment address;
is always FFH
Send data
(0 to 242 bytes)
Must be specified by the user in the request header
Figure 8-11. Request and Confirmation Structures for the RUP_SINGLE Service
link_status Message in the Confirmation Header
Table 8-7. link_status Messages for the RUP_SINGLE Service
Meaning
00H
ok
Positive acknowledgement; data area loaded
06H
no
Receive SAP not activated; receive SAP not equal to send SAP
14H
lr
Response resource being used at the moment by MAC
(temporary fault)
15H
iv
Illegal parameters in the request header
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
S5-95U, SINEC L2
.
.
Name :SENDER
ANST :
F
LSTA :
FY
:JU FB 223
EMPF :
:
:
:BE
LSTA :
:
:
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
F
.
.
FY
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0.0
9
:
:JU FB 224
Name :EMPFANG
0.1
OB1 (Sending PLC)
:JU FB 223
Name :SENDER
ANST :
F
0.0
9
DB33
0000;
000,000;
006,000;
000,000;
000,000;
1111;
2222;
3333;
4444;
0000;
001,000;
006,000;
000,000;
000,255;
0000;
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
Invoking FB223 and FB224 with the RUP_SINGLE Service in the Receiving PLC
(holds data ready for fetching)
OB1 (Receiving PLC)
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the RUP_SINGLE service
Flag byte contains the link_status of the confirmation
Fetch INDICATION of the SRD service
Enable receive
Invoking FB223 with the SRD Service in the Sending PLC (to fetch the data)
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the SRD service
Flag byte contains the link_status of the confirmation
:BE
Storing Request and Confirmation at the Receiver Using the RUP_SINGLE Service
(holding data ready for fetching)
Explanation
****Request frame, RUP_SINGLE service****
com_class / user_id
service_code / irrelevant
service_class / irrelevant
irrelevant / rem_add_segm
Data bytes 1 and 2
Data bytes 3 and 4
Data bytes 5 and 6
Data bytes 7 and 8
***Confirmation frame, RUP_SINGLE service***
com_class / user_id
service_code / link_status
service_class / irrelevant
irrelevant / rem_add_segm
8-25
Data Transmission by Accessing Layer 2 Services
8.8
S5-95U, SINEC L2
Holding Data Ready for Fetching Several Times Over by One or More
Stations (RUP_MULTIPLE Service)
The RUP_MULTIPLE (Reply UPdate MULTIPLE) service is used for holding data for fetching in an
active or passive station. The data held can be fetched by an active station several times over,
using the SRD service ( section 8.9) ; from either one or several active stations.
Before the sender requests data from the receiver (SRD layer 2 service), the receiver must keep
the data ready in an SAP.
The receiver uses either the RUP_SINGLE or RUP_MULTIPLE service to do this ( section 8.8).
The RUP_MULTIPLE service ensures that the SAP keeps the requested data ready for fetching
until the SAP is overwritten by a new RUP_SINGLE or RUP_MULTIPLE . The data in the SAP
can therefore be read out several times.
If only one station is to fetch the data, this is also possible with the RUP_MULTIPLE service, but is
better done with the RUP_SINGLE service.( section 8.7).
Reason: If the RUP_MULTIPLE service is used, the sender cannot distinguish between new data
and data that have already been requested.
Data holding procedure for the receiver ( Figure 8.12):
The request (header + net data to be held ready for fetching) in the flag or data area is sent
with L2-SEND (request to layer 2).
The 'Send' status byte informs the receiver that a confirmation has been transmitted, and the
receiver fetches the confirmation (= header) with L2-RECEIVE.
LAN bus
Receiver control program (Station 2 in the
example)
Sender control program (Station 1 in the
SAP
Request
(Data)
SEND
RUP_MULT.
STBS:...2H
Confirmation
STBS:...3H
Request header
8 bytes
ID: 07H
In example: DB33,
DW 1 to DW 4
Data
In example: DB33,
DW 5 to DW 8
aaaaaaaaaa
aaaaaaaaaa
aaaaa
The data are fetched by the
sender with the SRD service.
The receiver then gets an
indication, which it must fetch
with the L2-RECEIVE
( Section 8.9).
S5-95U
aaaaaa
aaaaaa aaaaaaaaaaaaaaaaaa
aaaaaa aaaaaaaaaaaaaa
aaaaaa aaaaaaaaaaaaaa
aaaaaa aaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
aaaaaaaaaaaaaaaaa
aaaaaa aaaaaaaa
aaaaaa aaaaaaaa
aaaaaa aaaaaaaa
aaa aaaa
S5-95U
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
RECEIVE
STBS:...4H
Confirmation
header, 8 bytes
In example: DB33,
DW 10 to DW 13
Figure 8-12. Holding Data Ready for Fetching with the RUP_MULTIPLE Service
Since the receiver sends data to itself with the RUP_MULTIPLE service, you must specify the
same SAP in DB1 for sending and receiving ( section 8.3). The destination SAP in the request
header is irrelevant.
8-26
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaa
aaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
7
service_code
Type of service requested:
RUP_MULTIPLE=07H
3
irrelevant
4
Bits 4 to 7
service_class
Priority of
send frame
low=0H or
high=1H
8
...
249
Value of
link_status
EWA 4NEB 812 6112-02
Bits 0 to 3
0
5
irrelevant
6
rem_add_segment
Logical segment address;
always enter FFH
Abbreviation
(PROFIBUS)
aaaaaaaa
aaaaaaaa
aaaa
user_id
User-definable ID
2
3
aaaaaa
aaaaaa
aaa
1
service_code
Type of service:
RUP_MULTIPLE=07H
aaaaaa
aaaaaa
aaa
aaaaaaaa
aaaaaaaa
aaaa
com_class
aaaaaa
aaaaaa
aaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
0
aaaaaa
aaaaaa
aaa
aaaaaa
aaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
2
aaaaaa
aaaaaa
aaa
aaaaaa
aaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Byte
aaaaaa
aaaaaa
aaa
aaaaaa
aaaaaa
aaa
S5-95U, SINEC L2
Data Transmission by Accessing Layer 2 Services
Figure 8-13 shows the request and confirmation structures for the RUP_MULTIPLE service.
Request
Byte
Confirmation
0
FDL_Request=00H
1
4
irrelevant
7
com_class
Confirmation=01H
user_id
ID assigned in connection with
a request
link_status
( Table 8-8 )
Bits 4 to 7
service_class
Priority of the
send frame
low=0H or
high=1H
Bits 0 to 3
0
5
irrelevant
6
irrelevant
rem_add_segment
Logical segment address;
is always FFH
Send data
(0 to 242 bytes)
Must be specified by the user in the request header
Figure 8-13. Request and Confirmation Structures for the RUP_MULTIPLE Service
link_status Message in the Confirmation Header
Table 8-8. link_status Messages for the RUP_MULTIPLE Service
Meaning
00H
ok
Positive acknowledgement; data area loaded
06H
no
Receive SAP not activated; receive SAP not equal to send SAP
14H
lr
Response resource being used at the moment by MAC
(temporary fault)
15H
iv
Illegal parameters in the request header
8-27
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
Data Transmission by Accessing Layer 2 Services
OB1 (Receiving PLC)
.
.
Name :SENDER
ANST :
F
LSTA :
FY
:JU FB 223
EMPF :
:
:
:BE
LSTA :
:
:
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
8-28
F
.
.
FY
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0.0
9
:
:JU FB 224
Name :EMPFANG
0.1
OB1 (Sending PLC)
:JU FB 223
Name :SENDER
ANST :
F
0.0
9
DB33
0000;
000,000;
007,000;
000,000;
000,000;
1111;
2222;
3333;
4444;
0000;
001,000;
007,000;
000,000;
000,255;
0000;
S5-95U, SINEC L2
Invoking FB223 and FB224 with the RUP_MULTIPLE Service in the Receiving PLC (holds
data ready for fetching)
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the RUP_MULTIPLE service
Flag byte contains the link_status of the confirmation
Fetch INDICATION of the SRD service
Enable receive
Invoking FB223 with the SRD Service in the Sending PLC (to fetch the data)
Explanation
.
.
Send request and fetch confirmation ( section 8.4)
Send initiation bit for the SRD service
Flag byte contains the link_status of the confirmation
:BE
Storing Request and Confirmation at the Receiver Using the RUP_MULTIPLE Service
(holding data ready for fetching)
Explanation
****Request frame, RUP_MULTIPLE service****
com_class / user_id
service_code / irrelevant
service_class / irrelevant
irrelevant / rem_add_segm
Data bytes 1 and 2
Data bytes 3 and 4
Data bytes 5 and 6
Data bytes 7 and 8
****Confirmation frame, RUP_MULTIPLE service****
com_class / user_id
service_code / link_status
service_class / irrelevant
irrelevant / rem_add_segm
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
8.9
Data Transmission by Accessing Layer 2 Services
Sending Data and Fetching Data from a Station (SRD Service)
The SRD (Send and Request Data with Reply) layer 2 service is used by an active station to send
data to an active or passive station and/or fetch data from an active or passive station.
Prerequisite for data transmission:
You must hold data requested by the sender ready for fetching with the RUP_SINGLE
( section 8.7) or RUP_MULTIPLE layer 2 service ( section 8.8)
Data transmission schematic ( Figure 8-14):
The request (header + net data to be transmitted) in the flag or data area is sent with L2-SEND
(request to layer 2).
The 'Receive" status byte informs the receiver that an indication has arrived.
The receiver fetches the indication (header + net data received) with L2-RECEIVE.
The 'Send' status byte informs the sender that a confirmation has been transmitted.
The sender fetches the confirmation (= header + net data requested by the receiver) with L2RECEIVE.
LAN Bus
Request SRD
Header with 8 bytes
In example: DB33,
DW 1 to DW 4
Receiver control program (Station 2 in the
example)
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaaaa
aaaaaaaaaa
Sender control program (Station 1 in the
SAP
Request
SEND
SRD request
Indication
(Data)
STBR:...1H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
(Data)
S5-95U
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
S5-95U
STBS:...2H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaaaaa
aaa
Data
In example: DB33,
DW 5 to DW 8
STBS:...4H
RECEIVE
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaa
aaaaaaaaaa
RECEIVE
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
Confirmation header
8 bytes
In example: DB33,
DW 10 to DW 13
(acknowledgement
+data)
aaaaaaaaaa
aaaaaaaaaa
Confirmation
STBS:...3H
STBR:...4H
Indication header
8 bytes
In example: DB34,
DW 10 to DW 13
Data
In example: DB34,
DW 14 to DW 17
Data
In example: DB33,
DW 14 to DW 17
Figure 8-14. Sending and Fetching Data with the SRD Service
EWA 4NEB 812 6112-02
8-29
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaa
aaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
8-30
8
..
.
249
Bits 0 to 3
Send data
(0 to 242 bytes)
0
5
Destination SAP 0 to 62,
FF (=default SAP 64)
6
rem_add_station
Address of the destination
station (1 to 126)
7
rem_add_segment
Logical segment address;
always enter FFH
1
2
3
4
5
6
7
rem_add_segment
Logical segment address;
is always FFH
Data held ready by the
receiver for fetching
(0 to 242 bytes)
8
..
.
249
service_code
Type of service:
SRD=03H
Bits 4 to 7
service_class
Priority of the
send message
low=0H or
high=1H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
com_class
user_id
ID assigned in connection with
a request
link_status
( Table 8-9 )
Bits 0 to 3
0
Destination SAP 0 to 62,
FF (=default SAP 64)
rem_add_station
Address of the destination
station (1 to 126)
aaaaaaaa
aaaaaaaa
FDL_Request=00H
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
0
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
Byte
aaaaaaaa
aaaaaaaa
Bits 4 to 7
service_class
Priority of
send message
low=0H or
high=1H
aaaaaaaa
aaaaaaaa
aaaa
Request
aaaaaaaa
aaaaaaaa
irrelevant
aaaaaa
aaaaaa
3
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
4
service_code
Type of service requested:
SRD=03H
aaaaaaaa
aaaaaaaa
aaaa
user_id
User-definable ID
aaaaaaaa
aaaaaaaa
aaaa
1
aaaaaaaa
aaaaaaaa
aaaa
2
com_class
aaaaaaaa
aaaaaaaa
aaaa
0
aaaaaa
aaaaaa
aaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaa
Byte
aaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaa
aaaaaaaa
aaaaaaaa
aaaa
aaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaa
Data Transmission by Accessing Layer 2 Services
S5-95U, SINEC L2
Requesting Data (SRD Layer 2 Service without Send Data)
If you do not want your sender to send any data to the receiver, but only request data from the
receiver, use the special case of the "SRD without send data" layer 2 service.
Prerequisite for data transmission:
You must hold data requested by the sender ready for fetching with the RUP_SINGLE
( section 8.7) or RUP_MULTIPLE layer 2 service ( section 8.8).
Fetching the data by the sender ( Figure 8-14):
The request (header + net data to be transmitted) in the flag or data area is sent with L2-SEND
(request to layer 2).
The 'Receive" status byte informs the receiver that an indication has arrived.
The receiver fetches the indication (header) with L2-RECEIVE.
The 'Send' status byte informs the sender that a confirmation has been transmitted.
The sender fetches the confirmation (= header + net data requested by the receiver) with L2RECEIVE.
Figure 8-15 shows the request confirmation and indication structures for the SRD service
Confirmation
Byte
Indication
0
Confirmation=01H
2
3
4
5
6
7
8
..
.
249
com_class
Indication=02H
1
irrelevant
service_code
Type of service:
SRD=03H
link_status
( Table 8-10 )
Bits 4 to 7
service_class
Priority of
receive
message
low=0H or
high=1H
Bits 0 to 3
0
Source SAP 0 to 62,
FF (=default SAP 64)
rem_add_station
Address of source station
(1 to 126)
rem_add_segment
Logical segment address;
is always FFH
Receive data
(0 to 242 bytes)
Must be specified by the user in the request header
Figure 8-15. Structure of Requests, Confirmations and Indications for the SRD Service
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaa
S5-95U, SINEC L2
Value of
link_status
*
Value of
link_status
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
link_status Message in the Confirmation Header
Table 8-9. link_status Messages for the SRD Service
Abbreviation
(PROFIBUS)
Meaning
08H
dl
Positive acknowledgement for data sent; reply data with low
priority available
0AH
dh
Positive acknowledgement for data sent; reply data with
high priority available
09H
nr
Positive acknowledgement for data sent; negative
acknowledgement for reply data
01H
ue
Negative acknowledgement; remote PLC is in the STOP mode
Prerequisite: Destination station is an S5-95U and the connection
has been properly configured at the destination station
02H
rr
Negative acknowledgement; resources of the remote FDL control
not available
03H
rs
service_code or rem_add_station not activated at the remote
station
11H
na
No response from remote station or response not plausible
15H
iv
- Illegal parameters in the request header or
- Local station is passive or
- Destination station is own station address or
- If own SAP = default SAP*: destination SAP is not default SAP
or
- own SAP default SAP*: destination SAP is default SAP
SAP 64 is defined as the default SAP.
link_status Message in the Indication Header
Table 8-10. link_status Messages (Indications) for the SRD Service
Abbreviation
(PROFIBUS)
Meaning
20H
lo
The reply to this SRD transaction was made with lowpriority data
21H
hi
The reply to this SRD transaction was made with highpriority data
22H
no_data
No reply data were transmitted in connection with this SRD
transaction
8-31
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
aaaaaaaaaaaa
Data Transmission by Accessing Layer 2 Services
OB1 (Sending PLC)
.
.
:JU FB 223
Name :SENDER
Send request and fetch confirmation ( section 8.4)
ANST :
LSTA :
:
Send initiation bit for the SRD service
Flag byte contains the link_status of the confirmation
EMPF :
:
:BE
8-32
F
FY
.
.
F
0.0
9
OB1 (Receiving PLC)
:
:JU FB 224
Name :EMPFANG
0.1
S5-95U, SINEC L2
Invoking FB223 for SRD
Explanation
.
.
:
:BE
Invoking FB223 and FB224 for the RUP_SINGLE and/or RUP_MULTIPLE Service in the
Receiving PLC (to hold data ready for fetching)
Explanation
.
.
:JU FB 223
Name :SENDER
Send request and fetch confirmation ( section 8.4)
ANST :
F
0.0
LSTA :
FY
9
Send initiation bit for the RUP_SINGLE and/or
RUP_MULTIPLE service
Flag byte contains the link_status of the confirmation
Fetch INDICATION of the SRD service
Enable receive
EWA 4NEB 812 6112-02
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
aaaaaaaaaaaaaa
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S5-95U, SINEC L2
0:
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
.
.
.
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
KH
KH
KY
KY
KY
KY
KH
KH
KH
KH
KH
=
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=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0000;
000,000;
003,000;
000,048;
002,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
001,000;
003,000;
000,048;
002,255;
1111;
2222;
3333;
4444;
0000;
0000;
0000;
002,000;
003,032;
000,048;
001,255;
AAAA;
BBBB;
CCCC;
DDDD;
0000;
EWA 4NEB 812 6112-02
Data Transmission by Accessing Layer 2 Services
Storing Request and Confirmation at the Sender
DB33
Explanation
****Request frame****
com_class / user_id
service_code / irrelevant
service_class / destination SAP
rem_add_station / rem_add_segm
Data bytes 1 and 2
Data bytes 3 and 4
Data bytes 5 and 6
Data bytes 7 and 8
****Confirmation frame****
com_class / user_id
service_code / link_status
service_class / destination SAP
rem_add_station / rem_add_segm
Net data from the RUP_SINGLE and/or
RUP_MULTIPLE service
.
.
Storing the Indication at the Receiver
DB34
Explanation
****Indication frame****
com_class / irrelevant
service_code / link_status
service_class / source SAP
rem_add_station / rem_add_segm
Receive data from the sender
.
.
.
8-33
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9
Programmer Functions Over the SINEC L2 Network
9.1
Programmer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - 2
9.2
Selecting the L2 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - 3
9.3
Entering Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - 4
9.4
Editing a Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - 5
9.5
Setting the L2 Basic Parameters on the Programmer
9 - 10
9.6
Activating an Editing Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EWA 4NEB 812 6112-02
..........
9 - 10
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Figures
9-1.
9-2.
9-3.
9-4.
9-5.
9-6.
9-7.
9-8.
9-1.
”INTERFACE SELECTION” Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The ”FUNCTION SELECTION/DEFAULTS” Screen of the
”BUS DIALLING” Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Path to be Edited with the ”BUS DIALLING” Utility . . . . . . . . . . . . . . . . . .
Screen for Editing a Path (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen for Editing a Path (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen for Activating a Path (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen for Activating a Path (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
”SYSID CP L2 (LOCAL)” Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functions of a Programmer Operated as a SINEC L2 Station
..........
9 - 3
9
9
9
9
9
9
9
4
5
6
7
8
9
10
Tables
9 - 2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
9
Programmer Functions Over the SINEC L2 Network
Programmer Functions Over the SINEC L2
Network
This chapter will show you
•
•
•
which programmer functions can be implemented over the SINEC L2 LAN for the S5-95U,
how to establish the connection to a remote station from the programmer, and
how to activate the connection.
You can operate the programmer as a station on the SINEC L2 LAN. Address TLN 0 is reserved for
the programmer.
Prerequisites:
To program the S5-95U over the SINEC L2 LAN, you must assign the necessary SINEC L2 interface
parameters in DB1.
At least the basic parameters must be in DB1. You will find tables of the basic parameters in section
1.4 of the manual. You must set these parameters in the S5-95U for the CP 5410 (PG 730/750/770
programmers) or CP 5412 (PG 685 programmer).
Important: Programmer functions over the SINEC L2 LAN can only be implemented for active S595Us. Station status "STA AKT" must therefore be specified as a basic parameter in
DB1.
FMA services and the standard connection, PLC-to-PLC connection and cyclic I/O types of data
transmission, and layer 2 services can also be configured in addition to the programmer functions.
Note:
If you switch the PLC from STOP to RUN following a "PLC overall reset", the SINEC L2 interface
parameters are not set and the PLC cannot be programmed over the SINEC L2 LAN.
Reason: Following a "PLC overall reset" and a change from STOP to RUN mode, the default DB1
is again valid in the PLC. The SINEC L2 parameter block is within comment characters (#)
in default DB1, and is therefore not interpreted by the PLC.
Remedy: Overwrite each comment character with a blank character; set the basic parameters
( section 1.4); transfer the modified DB1 to the PLC, and switch the PLC from STOP to
RUN mode.
To reach an S5-95U over the SINEC L2 LAN from the programmer, you must edit the corresponding
path with the programmer's "Bus dialling" utility and store this path in a path file.
You can then activate the edited path for the particular station.
You need S5-DOS (version V and later) to select a remote station over the SINEC L2 LAN.
The following programmers can be operated currently as stations on the SINEC L2 LAN:
• PG 685 (together with CP 5412)
• PG 730 (together with CP 5410B or CP 5410B/FlexOS)
• PG 750 (together with CP 5410B or CP 5410B/FlexOS)
• PG 770 (together with CP 5410B or CP 5410B/FlexOS)
EWA 4NEB 812 6112-02
9-1
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Programmer Functions Over the SINEC L2 Network
9.1
Programmer Function
Mnemonic
9-2
S5-95U, SINEC L2
Programmer Functions
The S5-95U can only be operated as a programmer slave on the SINEC L2 LAN, i.e. you cannot
• implement programmer functions over the LAN at another station from the control program of an
S5-95U,
• implement programmer functions at another station on the LAN through the programmer
interface of an S5-95U.
Table 9-1 lists all the functions that can be implemented from a programmer over the SINEC L2
LAN.
Table 9-1. Functions of a Programmer Operated as a SINEC L2 Station
Possible over the
SINEC L2 LAN
Input block
INPUT
Yes
Output block
OUTPUT
Yes
Test
TEST
Program test
PROGTEST
No
END program test
END TEST
No
Signal status display
STATUS
Yes
PLC functions
PC FCT
Start PLC
START
Yes
Stop PLC
STOP
Yes
Compress
COMPRESS
Yes
Status variable
STAT VAR
Yes
Force I/O
FORCE
No
Force variable
FORCE VAR
Yes
PLC information
PC INFO
Output addresses
OUTP ADDR
Yes
Memory configuration
MEM SIZE
Yes
System parameters
SYSPAR
Yes
Block stack
BSTACK
Yes
Interrupt stack
ISTACK
Yes
Help functions
HELP
Save
SAVE
Yes
Delete
DELETE
Yes
Directory
DIR
Yes
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
9.2
Programmer Functions Over the SINEC L2 Network
Selecting the L2 Interface
You can select the SINEC L2 interface with the programmer's "INTERFACE SELECTION" function
(key <F5> (INT) in the "PACKAGE SELECTION" screen. This screen lists only the interfaces you
can select.
Press cursor key < > or < > in the "INTERFACE SELECTION" screen until the SINEC L2
interface appears in the message bar ( Figure 9-1), and confirm with <F6> (SAVE):
I N T E R F A C E
SINEC L2
F1
EWA 4NEB 812 6112-02
F2
S E L E C T I O N
- INTERFACE (L2
F3
SELECT
F4
SIMATIC S5 / KOMI
> Select interface using cursor keys
> Select special IM511 protocol with F3
TTY / IM 511 - INTERFACE (STANDARD)
ADDR:
F5
00)
SINEC L2
F6
- INTERFACE
F7
SAVE
F8
EXIT
Figure 9-1. "INTERFACE SELECTION" Screen
9-3
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Programmer Functions Over the SINEC L2 Network
9.3
F U N C T I O N
9-4
PATHFILE
: ST 2/95U
FOOTER
:
F1
EDIT
F2
PRINT
NO
F3
SELECT
F4
ACTIVATE
S5-95U, SINEC L2
Entering Defaults
When you have confirmed your choice of interface, the "PACKAGE SELECTION" screen appears
again.
Select the "FUNCTION SELECTION/DEFAULTS" screen with <F2> (UTILITY) and <F1>
(BUS DIALLING).
Choose a name for the path you want to generate (e.g. "TN2/95PLC" for the S5-95U with
station address 2 as endpoint of the path).
Choose names for the pathfile (e.g. C:[email protected]@AP.INI), the footer file (if you want a footer) and
the printer file (if you have defined printer parameters for the printer with the "PRINTER" utility).
SIMATIC S5 / ODS01
S E L E C T I O N / D E F A U L T S
PATHFILE: B:[email protected]@AP.INI
FOOTER FILE: B:@@@@@@F1.INI
PRINTER FILE: B:@@@@@@DR.INI
SELECTED INTERFACE :
ACTIVE INTERFACE :
F5
CONN.
F6
DIS-
DELETE
CP L2
CP L2
PATH
F7
DIR
F8
EXIT
Figure 9-2. The "FUNCTION SELECTION/DEFAULTS" Screen of the "BUS DIALLING" Utility
Press <F1> (EDIT) to generate the path.
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
9.4
Programmer Functions Over the SINEC L2 Network
Editing a Path
Supposing you want to use a programmer connected direct to the SINEC L2 LAN to reach the
station with LAN address 2. The endpoint of the path is to be the S5-95U with the station address 2.
Figure 9-3 shows an example of how to edit the path ( Figure 9-3) with the "LAN SELECT" utility.
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PG
CP-L2
SINEC L2
CP L2
S5-95U with SINEC L2 interface
ENDP
Figure 9-3. Path to be Edited with the "BUS DIALLING" Utility
Note
The "ENDP" control processor and "CP L2" communications processor are integrated
in the S5-95U programmable controller ( section 3.1, Figure 3-2).
You must therefore show the S5-95U as consisting of "CP L2" and "ENDP" as has
been done in Figure 9-3.
EWA 4NEB 812 6112-02
9-5
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PG/CP-L2
F1
9-6
F2
F3
CP PG-L2
F4
F5
CP-L2
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Programmer Functions Over the SINEC L2 Network
S5-95U, SINEC L2
Press key <F1> in the "FUNCTION SELECTION/DEFAULTS" screen. The following screen
appears:
PATH NAME : ST2/95U
SINEC L2
F6
SAVE
F7
F8
DELETE
AUX.
ELEMENT FUNCTION
Figure 9-4. Screen for Editing a Path (1)
Press <F8> (AUX. FUNCTION) if you want to enter or modify the name of a program, symbol,
printer or footer file.
Press <F4> (CP-L2) to proceed to the next path level.
Note
If you want to delete the element last entered by you in the path,
press <F7>. This avoids having to delete the whole path if you have
entered a wrong path element.
EWA 4NEB 812 6112-02
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PG/CP-L2
CP-L2
F1
ENDP
EWA 4NEB 812 6112-02
F2
MUX
F3
F4
CP-L2
F5
CP-L1
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S5-95U, SINEC L2
Programmer Functions Over the SINEC L2 Network
The screen changes to the following:
PATH NAME :ST 2/95U
SINEC L2
ADDRESS :
COOR/
F6
SAVE
0
DELETE
F8
AUX.
ELEMENT FUNCTION
F7
Figure 9-5. Screen for Editing a Path (2)
Change the default address "0" in the entry field beside the symbol for CP-L2 to "2" in order to
reach the S5-95U with the station address 2.
Press <F1> (ENDP) to complete the path.
Confirm the path parameters with <F6> (SAVE).
You have now completed and stored the path. You must now activate the subpath from the PG/CPL2 to the L2 LAN to set the CP-L2's LAN parameters in the programmer.
9-7
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PG/CP-L2
CP-L2
F1
SYSID
9-8
F2
F3
SUBPATH
F4
F5
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Programmer Functions Over the SINEC L2 Network
S5-95U, SINEC L2
Press <F4> (ACTIVATE) in the "FUNCTION SELECTION/DEFAULTS"
screen.
The edited path appears on the monitor.
PATH NAME : ST2/95U
SINEC L2
ADDRESS :
F6
2
ENDP
F7
TOTAL
F8
EXIT
Figure 9-6. Screen for Activating a Path (1)
Activate the first path level by pressing <F3> (SUBPATH).
The activated subpath is then marked with an "* ", and "DIRECT PG LINK ESTABLISHED" appears
in the message bar.
Press <F1> (SYSID) to match the local LAN parameters of the CP-L2 communications
processor in the programmer to the L2 LAN parameters (basic L2 parameters) of the system
( section 9.5).
EWA 4NEB 812 6112-02
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SINEC H1
CP-H1
CP-L2
F1
SYSID
EWA 4NEB 812 6112-02
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PG
CP-L2
F2
F3
SUBPATH
F4
ADDRESS :
PASSWORD:
ADDRESS :
F5
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S5-95U, SINEC L2
Programmer Functions Over the SINEC L2 Network
You can also edit more complex paths.
For example, you can edit a path from a programmer on the SINEC H1 LAN to an S5-95U on the
SINEC L2 LAN. Proceed exactly as described on the previous pages. The edited path will then
appear as follows on your monitor:
PATHNAME : ST 2/95U
CP-H1
ETHERNET-
080006010000
SINEC L2
2
ENDP
F6
F7
TOTAL
F8
EXIT
Figure 9-7. Screen for Activating a Path (2)
9-9
Programmer Functions Over the SINEC L2 Network
9.5
S5-95U, SINEC L2
Setting the L2 Basic Parameters on the Programmer
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The following display appears when you press <F1> (SET SYSID) in the "FUNCTION
SELECTION/DEFAULTS" screen:
S Y S I D
C P
LAN PARAMETERS :
L 2
(L O C A L)
(PLEASE REMEMBER THAT EACH INCORRECT MODIFICATION OF
THE DEFAULT VALUES CAN IMPAIR THE OPERABILITY OF THE
NETWORK)
0
187.5 KBD
400
50
80
80
400
5000
20
31
57
RS 485
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L2 NODE ADDRESS :
BAUD RATE :
SLOT TIME (WAIT FOR RECEIVE):
QUIET TIME (MODEM):
SETUP TIME:
SHORTEST STATION DELAY (SH. PROTOCOL PROC. TIME):
LONGEST STATION DELAY (LO. PROTOCOL PROC.TIME):
TARGET ROTATION TIME:
GAP UPDATE FACTOR (1 - 100):
HIGHEST L2 STATION ADDRESS:
DEFAULT SAP:
PHYSICAL BUS CHARACTERISTICS:
F1
SET SYSID
F2
F3
F4
F5
F6
F7
F8
SELECT
Figure 9-8. "SYSID CP L2 (LOCAL)" Screen
The parameters shown are CP-L2 default parameters in the programmer, and must be matched to
the basic L2 parameters of the system ( Table 1-4, 1-5)!
Position the cursor to the parameter you want to change. You can select the baud rate and the
physical bus characteristics with <F3>.
Press <F1> (SET SYSID) to confirm and save the parameters you have changed.
9.6
Activating an Edited Path
You must always match the basic L2 parameters of the CP-L2 to the basic L2 parameters of the
system before activating a path starting at a programmer with an integral CP-L2 communications
processor ( section 9.5).
You can activate an edited path
• in the BUS DIALLING utility ( FUNCTION SELECTION screen)
or
• in an S5 program package with a path selection facility.
Activating a path establishes a communications link to a remote station.
9-10
EWA 4NEB 812 6112-02
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Appendices
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
DB1 Parameters, DB1 Parameter Assignment Errors, Calculation of Target
Rotation Time
SAP Numbers / Job Numbers
List of Abbreviations/ Glossary
List of Accessories and Order Numbers
Technical Specifications; PLC Cycle Delay Times Caused by SINEC L2
Operations
S5-95U Communications Matrix and Emulation of Types of Data Transmission in
Layer 2 with S5-95U
EWA 4NEB 812 6112-02
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A
DB1 Parameters, DB1 Parameter Assignment Errors, Calculation of Target
Rotation Time
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
A
q
m
s
t
u
v
DB1 Parameters, DB1 PAFE, TRT
DB1 Parameters, DB1 Parameter Assignment
Errors, Calculation of Target Rotation Time
Parameter
Argument
TLN
STA
BDR
HSA
TRT
SET
ST
SDT 1
SDT 2
n
AKT/PAS
p
q
m
s
t
u
v
Argument
Permissible Range
n
AKT/PAS
p
1 to 126
9.6; 19.2; 93.75; 187.5;
500; 1500
1 to 126
256 to 1,048,320
0 to 494
50 to 4,095
11 to 255
35 to 1,023
STB
200 MBx
FMAE
J/Y/N
Argument
Permissible Range
200 MBx
J/Y/N
1 to 253
SF
EF
KBS
KBE
DBxDWy or MBz
DBxDWy or MBz
MBh
MBh
Argument
Permissible Range
MBh
DBx
DWy
MBz
1 to 63
2 to 255
0 to 255
0 to 254
EWA 4NEB 812 6112-02
Significance
Block ID: SL2:
SINEC L2
Basic Parameters for all Functions
Own station address
Own station status
Baud rate
Highest L2 station address on bus
Target rotation time
Set-up time
Slot time
Shortest delay time
Longest delay time
Explanation
Station address, including 1 to 31 for active stations
AKT = active, PAS = passive
Baud rate in kbaud
Station addresses
Bit time units*
Bit time units*
Bit time units*
Bit time units*
Parameters for FMA Services
Location of status byte for FMA services
Job number A-NR=200
Activate FMA service MAC_EVENT
Explanation
Job number, flag byte
Is FMA service activated?
j/J = ja; y/Y = yes; n/N = no
Parameter for Standard Connections
Location of the send mailbox
Location of the receive mailbox
Location of the send coordination byte
Location of the receive coordination byte
Explanation
Flag byte
Data block
Data word
Flag byte
A-1
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DB1 Parameters, DB1 PAFE, TRT
Parameter
Block ID:
ZPDB
ZPMS
ZPM
ZPLI
ZPDB
ZPSS
ZPSA
ZPSE
Argument
DWa or X
DWb or X
DWc or X
DWd or X
DBx
MBz
*
**
A-2
DBx
MBy
a b DWc DWd
DWe DWf
MBz
Argument
Permissible Range
a
b
1 to 126
0 to 62
DWc or X
DWd or X
DWe or X
DWf or X
DBx
MBy
MBz
0 to 255
0 to 255
0 to 255
0 to 255
2 to 255
1 to 254
1 to 253
DBx
MBz
DWa DWb
DWc DWd
Permissible Range
0 to 255
0 to 255
0 to 255
0 to 255
2 to 255
1 to 254
S5-95U, SINEC L2
Argument
Significance
SL2:
SINEC L2
Parameters for PLC to PLC Connection
STBS
STBR
n MBx
n MBy
Argument
Permissible Range
Explanation
n
MBx
MBy
1 to 31
1 to 254
1 to 253
Job number
Flag byte
Flag byte**
Job number and location of status byte ‘Transmit’
Job number and location of status byte ‘Receive’
Parameters for Cyclic I/O
Parameters for ZP Master Function
Reserved data block for cyclical I/Os
Status byte (STB) for ZP master
ZP master/slave connection (max. 32 connections
can be programmed)
Status byte (STB) for ZP slave life list**
Explanation
ZP slave station address
L2 SAP of ZP slave (if S5-95U is ZP slave, enter
61)
ZPA lower limit; data word; X for ”non defined”
ZPA upper limit;
data word; X for ”non defined”
ZPE lower limit; data word; X for ”non defined”
ZPE upper limit;
data word; X for ”non defined”
Data block
Flag byte
Flag byte
Parameters for ZP Slave Function
Reserved DB for cyclical I/Os
Status byte (STB) for ZP slave
ZP slave output area
ZP slave input area
Explanation
ZPA lower limit; data word; X for ”non defined”
ZPA upper limit;
data word; X for ”non defined”
ZPE lower limit; data word; X for ”non defined”
ZPE upper limit;
data word; X for ”non defined”
Data block
Flag byte
A bit time unit is the time it takes to transmit one bit (reciprocal of the baud rate).
The next flag byte is reserved as the length byte.
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
Parameter
STBS
STBR
Argument
n
MBx
MBy
**
***
EWA 4NEB 812 6112-02
DB1 Parameters, DB1 PAFE, TRT
Argument
n MBx
n MBy
Significance
Parameters for Layer 2 Accesses
SAP number and location of the 'Send' status byte
SAP number and location of the 'Receive' status byte
Permissible Range
Explanation
33 to 54, 64***
1 to 253
1 to 253
SAP number
Flag byte**
Flag byte**
The next byte is reserved as the length byte.
SAP 64 is the default SAP
Typical DB1 with all programmable SINEC L2 functions:
:
:
156:
168:
KS
KS
='
SL2: TLN 1
STA AKT';
=' BDR 1500
HSA 1
TRT ';
180:
192:
204:
KS
KS
KS
='5120
SET 60 SDT 1 15';
='0 SDT 2 980 ST 1000
';
='STB 200 MB200 FMAE Y
';
216:
228:
240:
252:
KS
KS
KS
KS
='SF DB6 DW0
EF DB7 DW';
='0
KBS MB62 KBE MB63 ';
='STBS 2 MB10 STBR 2 MB11 ';
='ZPDB DB100 ZPMS MB100
';
264:
276:
288:
KS
KS
KS
='ZPLI MB101 ZPM 40 61
='DW1 DW10 DW101 DW110
='ZPM 41 61
';
';
';
300:
312:
324:
KS
KS
KS
='DW11 DW20 DW111 DW120
='ZPM 42 61
='DW21 DW30 DW121 DW130
';
';
';
336:
348:
360:
KS
KS
KS
='STBS 48 MB77
='STBR 48 MB79
='; END ';
';
';
Basic parameters
FMA services
Standard connection
PLC-to-PLC connection
Cyclic I/O
Layer 2 access
A-3
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DB1 Parameters, DB1 PAFE, TRT
Parameter
Baudrate
Basic
in kbaud
parameters
in bit time units
Baudrate
Basic
in kbaud
parameters
in bit time units
Baudrate
Basic
in kbaud
parameters
in bit time units
A-4
9.6
S5-95U, SINEC L2
Relevant Basic Parameters for the S5-95U as an Active/Passive Station
TLN
STA
BDR
HSA
TRT
SET
ST
SDT 1
SDT 2
S5-95U active
x
x
x
x
x
x
x
x
x
S5-95U passive
x
x
x
x
x
Defining the Arguments of Basic Parameters for the S5-95U as a Function of the Baud Rate
19.2
93.75
187.5
(Defaults
in DB1)
500
1500
SET
0
0
0
0
0
60
ST
73
76
99
170
400
1000
SDT 1
12
12
12
12
12
150
SDT 2
40
60
80
150
360
980
Defining the Arguments of Basic Parameters for the S5-95U in Conjunction with the CP 5410
and/or CP 5430-1
9.6
19.2
93.75
187.5
500
1500
SET
1
1
1
1
1
60
ST
80
80
190
380
1000
3600
SDT 1
12
12
12
12
12
150
SDT 2
40
60
80
150
360
980
Defining the Arguments of Basic Parameters for the S5-95U in Conjunction with Other
SIMATIC Devices
9.6
19.2
93.75
187.5
500
1500
SET
10
15
80
80
80
ST
100
170
45
45
240
400
1000
3000
SDT 1
12
15
45
80
80
150
SDT 2
60
65
200
360
360
980
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
•
•
•
1
2
3
4
EWA 4NEB 812 6112-02
DB1 Parameters, DB1 PAFE, TRT
Calculating the Target Rotation Time
Assuming that you have defined the SET, ST, SDT 1 and SDT 2 arguments as listed in the table
entitled "Defining the Arguments of Basic Parameters for the S5-95U as a Function of the Baud
Rate" on page A-4, you can calculate the target rotation time required for the following types of
transmission:
Standard connection
PLC to PLC connection
Cyclical I/O
Proceed as follows to calculate the target rotation time:
Determine the maximum possible number of frames for each different type of frame (for
example, SDN or SDA frames)
Out of these data and using the following table and the explanations to the token frame,
calculate the basic load. The values given in the table are specified in bit time units.
Add 11 bit time units to the basic load for every byte transmitted. The result is your worst-case
target rotation time.
Type of Frame
Baud Rate in kbaud
9.6
19.2
93.75
187.5
500
1500
Token1
70
70
70
75
145
345
SDN2
170
190
210
230
480
1120
SDA3
180
185
190
230
425
1040
SRD4
270
270
270
280
500
1160
Number of token frames = number of active stations on the SINEC L2 network
SDN (Send Data with No acknowledge) = data transmission without acknowledgement;for standard
connection (only broadcast)
SDA (Send Data with Acknowledge) = data transmission with acknowledgement; for standard connection
(not broadcast) and PLC to PLC connection
SRD (Send and Request Data) = data transmission and data request with comfirmation ; for Cyclic I/O
An example of calculating the target rotation time can be found on the next pag
A-5
DB1 Parameters, DB1 PAFE, TRT
S5-95U, SINEC L2
Example of Calculating the Target Rotation Time
Four active and two passive stations are connected to the SINEC L2 network.
TLN of the active stations:
1, 2, 3, and 4
TLN of the passive stations: 40, 41
HSA:
4
BDR:
500 kBaud
SET:
0
ST:
400 bit time units
SDT1:
12 bit time units
SDT2:
360 bit time units
Data traffic for
• Station 1: ZP master
SRD frame with 4 bytes of transmit data to station 40:
2 bytes of received data from station 40;
SRD frame with 10 bytes of transmit data to station 41;
10 bytes of received data from station 41
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 2:
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 3;
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 4
•
Station 2:
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 1
•
Station 3:
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 1
•
Station 4:
PLC to PLC conn. SDA frame with 30 bytes of transmit data to station 1
Calculation of the basic frame load and the required time:
Token frames:
Station 1: 1·SRD
1·SRD
3·SDA
Station 2: 1·SDA
Station 3: 1·SDA
Station 4: 1·SDA
with
with
with
with
with
with
6
20
30
30
30
30
bytes
bytes
bytes
bytes
bytes
bytes
Target rotation time to set:
of
of
of
of
of
of
net
net
net
net
net
net
4·145
500+6·11
500+20·11
3·(425+30·11)
425+30·11
425+30·11
425+30·11
Sum (rounded up):
data
data
data
data
data
data
6400 bit time units ·
= 580
= 566
= 720
= 2265
= 755
= 755
= 755
= 6400
1
500 kBaud
bit
bit
bit
bit
bit
bit
bit
bit
times
times
times
times
times
times
times
times
units
units
units
units
units
units
units
units
= 12800 µs
Tip to optimize the target rotation time:
• Assign the station addresses in ascending order (1, 2, ...).
A-6
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
EWA 4NEB 812 6112-02
DB1 Parameters, DB1 PAFE, TRT
Explanation of the SET, ST, SDT1, and SDT2 Parameters
Parameter
Explanation
Set up time (SET)
“Dead time”; this is the time allowed to pass between the occurrence of
an event (e.g., the receipt of a character or expiration of an internal timer)
and the response to this event.
Permissible range: 0 to 494 bit time units*
Slot time (ST)
Wait-to-receive time or wait-to-reply time; this is the length of time the
transmitter of a frame must wait for the receiving station to respond. This
is valid for a data frame as well as for a token frame.
Permissible range: 50 to 4095 bit time units*
Shortest station
delay time (SDT1)
Shortest protocol processing time; this is the shortest span of time
between transmission(receipt) of the last bit of a frame and transmission
(receipt) of the first bit of the next frame.
Permissible range: 11 to 255 bit time units*
Longest station
delay time (SDT2)
Longest protocol processing time; this is the longest span of time between
transmission(receipt) of the last bit of a frame and transmission (receipt) of
the first bit of the next frame.
Permissible range: 35 to 1023 bit time units*
* One bit time unit is the time it takes to transmit one bit (reciprocal value of baud rate)
DB1 Parameter Assignment Errors
You can read out the DB1 parameter assignment errors as codes. All you need to do is to specify
in DB1, parameter block “ERT:”, where to store the error code (in the flag area or in a data block).
The error code is in the left byte; “04H” is in the right byte as the error location for SL2: SINEC L2
parameter block. Parameter assignment for “ERT:” is described in detail in section 9.1.2 of the S590U/S5-95U System Manual.
Error Code of DB1
Interpreter (left byte in data
word or flag word)
Significance
3H
Syntax error in block ID
4H
Syntax error in parameter
5H
6H
Syntax error in argument, or value goes upside permissible
range
Value exceeds permissible range in an argument
7H
Parameter combination not allowed
17H
L2 interface not in working order
20H
A flag byte has been assigned twice for the status bytes
A-7
S5-95U, SINEC L2
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DB1 Parameters, DB1 PAFE, TRT
Error Code of DB1
Interpreter (left
byte in data
word or flag word)
A-8
Significance
21H
L2 basic parameter: TLN (station address) of an active station can be only
1 to 31
22H
L2 basic parameter: TLN (station address) is higher than HSA (highest station
address)
23H
The connection has been configured to own station
24H
PLC to PLC connection to a passive station is not possible; or, with standard
connection, there is no send mailbox for a passive station.
25H
FMA service MAC_EVENT has been activated (DB1 parameter FMAE y), but
“STB 200” was not entered
26H
L2 basic parameter: SET must be longer than SDT1 (SET >
27H
No receive mailbox was specified for the standard connection
28H
No send mailbox was specified for the standard connection
29H
L2 basic parameter missing; all basic parameter must be present in DB1
parameter block “SL2:”.
30H
There are several “SL2:” parameter blocks
31H
L2 basic parameter: SDT2 must be (35+2 times SET)
32H
L2 basic parameter: (ST - 15) must be SDT2
40H
ZP master: no data block was specified in DB1 for ZP (ZP DB)
41H
ZP master: ZP master was entered for a passive station
42H
ZP master: ZP master has no ZP connection
43H
ZP master: at least in one ZP connection the ZP slave address is wrong (ZP
slave address=ZP master address)
44H
ZP master: the ZP connection was assigned twice
45H
ZP master: The ZPA (ZP output area) was not entered consistently (without
gaps) in ZPDB
46H
ZP master: length error in ZPA (ZP output area)
47H
ZP master: The ZPE (ZP input area) was not entered consistently (without
gaps) in ZPDB or overlaps.
48H
ZP master: length error in ZPE (ZP input area)
49H
ZP master: ZPA and ZPE overlap in ZP DB
52H
ZP slave: no data block was specified in DB1 for ZP (ZP DB)
53H
ZP slave: neither ZPA nor ZPE were specified in DB1
54H
ZP slave: ZPA and ZPE overlap in ZP DB
SDT 1 - 35
2
)
EWA 4NEB 812 6112-02
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B
SAP Numbers / Job Numbers
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
B
*
EWA 4NEB 812 6112-02
SAP Numbers / Job Numbers
SAP Numbers / Job Numbers
This appendix contains information that you do not have to know to work with the S5-95U
programmable controllers as SINEC L2 stations. This appendix is for the network expert who wants
more details about the internal process of data transfer.
Definition of terms:
The job number carried by a frame running on the network helps the required station to identify and
read in the frame. To achieve this, another parameter is provided, the SAP (Service Access Point).
A mail carrier transporting a package to the receiver is in a situation similar to the message on the
bus:
• The residence number (destination address) has to be identified.
• The correct residence door (=SAP) must be found in order to deliver the package (message).
The system automatically assigns the SAP numbers for the functions listed below.
SAP
Function/Explanation
0, 1
reserved
2 to 32
PLC to PLC connection via integrated standard function blocks
L2-SEND and L2-RECEIVE.*
33 to 54
Layer 2 accesses
55
reserved
56
Standard connection
57 to 60
reserved
61
Cyclical I/O
62, 63
reserved
64 (default SAP)
Layer 2 accesses
The following applies to PLC-to-PLC connections:
SAP 2 means a PLC-to-PLC connection to station 1
:
SAP 32 means a PLC-to-PLC connection to station 31
B-1
SAP Numbers / Job Numbers
S5-95U, SINEC L2
The job number indicates the following:
•
•
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•
Which of the communications services is used (see table below)
With PLC to PLC connections:
- in L2-SEND, which station will receive the data
- in L2-RECEIVE, which station transmitted the received data.
With layer 2 accesses
- in L2-SEND, which layer 2 access is used for the data to be sent
- in L2-RECEIVE, which layer 2 access is used for the received data
Job Number
0
1 to 31
Used for
nothing
transmission (transmitting and receiving) via PLC to PLC
connection
32
33 to 54, 64
nothing
sending the request and fetching the confirmation in the
case of layer 2 accesses
55 to 63, 65 to 132
133 to 154, 164
155 to 163, 165 to 199
fetching the indication in the case of layer 2 accesses
nothing
200
service and diagnostics functions with FMA services
201
nothing
202
fetching the ZP slave life list for the ZP master with cyclic
I/O
203 to 255
B-2
nothing
nothing
EWA 4NEB 812 6112-02
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C
List of Abbreviations/Glossary
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
C
List of Abbreviations/Glossary
List of Abbreviations/Glossary
LAN-Specific Mnemonic
A-NR
AS
BDR
BF LED
Explanation
Parameter for FB L2-SEND and FB L2-RECEIVE: job number
Active star coupler
DB1 parameter: SINEC L2, Baud rate (specifies the speed of the data transfer)
Bus fault LED
CBR
DB1 parameter: SINEC L2, standard connection, location of the receive
coordination byte
CBS
DB1 parameter: SINEC L2, standard connection, location of the send coord. byte
CP
DBNR
FMA
FMAE
Communications processor
Parameter for FB L2-SEND and FB L2-RECEIVE: data block number (location of
the source and destination data)
Field bus management
DB1 parameter: SINEC L2, activate FMA service MAC_EVENT
FO
Fiber optics
FOL
Fiber optic link
GAP
For an active station: the address range from the own station address to the next
active station address.
GP
Global I/O
HSA
DB1 parameter: SINEC L2, highest station address
LAS
List of active stations
LB
Length byte
OPM
Optical plastic module
OSM
Optical silica module
PAFE
Parameter assignment error byte
PROFIBUS
Process field bus
QANF
Parameter for FB L2-SEND: start address of source data area
QLAE
Parameter for FB L2-SEND: amount of source data
QTYP
Parameter for function block L2-SEND: type of source data
RM
DB1 parameter: SINEC L2, standard connection, receive mailbox location
SAP
Service access point
SC
Standard connection
EWA 4NEB 812 6112-02
C-1
List of Abbreviations/Glossary
S5-95U, SINEC L2
LAN-Specific Mnemonic
SDA
Send data with acknowledge
SDN
Send data with no acknowledge
SDT 1
DB1 parameter: SINEC L2, shortest station delay time
SDT 2
DB1 parameter: SINEC L2, longest station delay time
SET
DB1 parameter: SINEC L2, set-up time
SM
DB1 parameter: SINEC L2, standard connection, send mailbox location
SL2:
DB1 block ID for SINEC L2
SRD
Send and request data
ST
DB1 parameter: SINEC L2, slot time
STA
DB1 parameter: SINEC L2, station status
STB
Status byte
STBR
DB1 parameter: SINEC L2, PLC to PLC connection, location of the receive status
byte
STBS
DB1 parameter: SINEC L2, PLC-PLC connection, location of the transmit status
byte
TLN
DB1 parameter: SINEC L2, station address
TN
Station
TRT
DB1 parameter: SINEC L2, target rotation time
ZANF
Parameter for FB L2-RECEIVE: start address of the destination data area
ZLAE
Parameter for FB L2-RECEIVE: amount of source data
ZP
ZP DB
C-2
Explanation
Cyclic I/O
DB1 parameter: SINEC L2, Cyclic I/O, data block for Cyclical I/Os
ZPA
Cyclic I/O output range (location of the send data )
ZPE
Cyclic I/O input range (location of the received data )
ZPLI
DB1 parameter: SINEC L2, cyclic I/O, status byte for the ZP slave life list
ZPM
DB1 parameter: SINEC L2, cyclic I/O, ZP master/slave relationship
ZPMS
DB1 parameter: SINEC L2, cyclic I/O, status byte for the ZP master
ZPSA
DB1 parameter: SINEC L2, cyclic I/O, ZP slave output range
ZPSE
DB1 parameter: SINEC L2, cyclic I/O, ZP slave input range
ZPSS
DB1 parameter: SINEC L2, cyclic I/O, ZP slave status byte
ZTYP
Parameter for FB L2-RECEIVE: type of destination data
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
List of Abbreviations/Glossary
Glossary
A
Active star coupler
Resource for coupling fiber optic cables
Active station
When ready to send data, an active station may send data to, and
request data from, other stations on the LAN
B
Baud rate
Data transmission speed expressed as the number of bits
transmitted per second (baud rate = bit rate)
Bit time unit
The time taken to transmit a bit (the reciprocal of the baud rate)
Bit-serial field bus system
Bus system used at the field level in integrated automation
systems; information is transmitted in bit-serial mode over the bus
cable
Broadcast
Data and information sent from an active station to all active and
passive stations on the LAN
Bus
Common transmission path to which all stations are connected
Bus cable
Twisted-pair, shielded cable for connecting stations with each other
Bus connector
Resource for the direct interconnection of stations on the LAN
Bus terminal
Resource used for connecting a station to the bus cable
C
Cell level
A hierarchical level in an integrated automation system: Receives
production orders from the process supervision level; this level is
generally represented by manufacturing cells, each of which is
controlled by at least one PLC
Communications processor That part of a PLC controlling message traffic over the SINEC L2
LAN parallel to the control processor
Confirmation
Acknowledgement of a service request
Coordination byte
Diagnostic byte for flagging error and coordination information when
sending and/or receiving data over a standard connection
Cyclic I/O (ZP)
Cyclic data interchange between ZP master (generally active
station) and ZP slaves (generally passive stations)
D
Data transmission
Activity on the transmission link (bus or LAN cable)
E
Explicit communications
The time at which communications take place is determined by the
setting of an initiation bit in the user program
F
EWA 4NEB 812 6112-02
C-3
List of Abbreviations/Glossary
S5-95U, SINEC L2
Field device
A device, such as a sensor or actuator, permitting the exchange of
information between the control system and the process
Field level
A hierarchical level in an integrated automation system; the
interchange of information between the control system and the
process is implemented by means of field devices, sensors and
actuators
FMA services
Debugging and diagnostic services for monitoring the network and
the local stations; implement network management functions to the
PROFIBUS standard
FO transmission
technology
Configuration of the SINEC L2 LAN using optical fiber conductors
or waveguides (necessary in noisy environments)
G
GAP
Address area of the active station extending from its own address
to that of the next active station
I
Implicit communications
Data communications over the LAN take place automatically and
are not initiated by the user program
Indication
Indication of an event
L
LAN access method
Controls access to the transmission medium by the stations to
guarantee the functional interchange of data
master-slave method
token passing method
Layer 2
Layer 2 of the ISO (International Organization for Standardization)
7-layer reference model for communications; in PROFIBUS terms,
layer 2 is referred to as the Fieldbus Data Link (FDL)
Layer 2 services
Communications mechanisms provided to the user by the layer 2
firmware of the communications processor
Local station
Initiator of a communications link, either as a sending or requesting
station
Longest station delay time
The longest time elapsing between sending or receiving the last bit
of a frame and the sending or receiving of the first bit of the next
frame
M
Master-slave method
LAN access method when there is only one station active and all
other stations are passive; only the active station automatically has
the right to send, while all passive stations can send data to an
active station only when requested to do so by that station
Multicasting
Transmitting from an active station to a group of active and passive
stations
O
C-4
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Optical fiber link
List of Abbreviations/Glossary
Transmission medium employing fiber optic waveguides
P
Parameter assignment
error byte
Diagnostic byte for flagging possible errors when assigning
parameters to the integral L2-SEND and L2-RECEIVE FBs
Passive station
A passive station may only exchange data with an active station
when requested to do so by that station
Planning level
The hierarchical level in an integrated automation system at which
production orders are planned, product strategy is established,
production guidelines are defined and information from the
production process is monitored
Process supervision level
The hierarchical level in an integrated automation system at which
decisions are made concerning production procedures and the
coordination of function groups
PROFIBUS
Process and field bus as defined in the PROFIBUS standard (DIN
19245). The standard specifies the functional, electrical and
mechanical properties of this bit-serial field bus system
R
Receive mailbox
Receiver
Area in the data block (DB) or flag byte containing the data
received from a data transmission
remote station
Remote station
A responding station in a communications link as opposed to the
initiating local station
Repeater
A resource for amplifying LAN bus signals and coupling LAN
segments over great distances
Repeater adapter
A resource for a mixed configuration of RS 485 and FO
transmission technologies
Request
A service request of the local station
RS 485 transmission
technology
SINEC L2 LAN configuration involving shielded twisted- pair wires
S
SAP
Service access point to layer 2
SDA
Send Data with Acknowledge: Data transmission service provided
by layer 2 for acyclic send and request mode
SDN
Send Data with No Acknowledge: Data transmission service
provided by layer 2 for acyclic send and request mode
Segment
The smallest functional unit of a LAN
Send mailbox
Area in a data block (DB) or flag byte containing the data to be
transmitted
Sender
EWA 4NEB 812 6112-02
local station
C-5
List of Abbreviations/Glossary
S5-95U, SINEC L2
Setup time
The time allowed to elapse between an event (e.g. receipt of a
character or expiry of an internal monitoring time) and the response
to that event ("dead time")
Shortest station delay
The shortest time elapsing between sending or receiving the last
bit of a frame and sending or receiving the first bit of the next
frame
SINEC L2
SINEC L2 local area network
SINEC L2 local area
network
A bus-type LAN configuration consisting of one or more segments
coupled together by repeaters; used for networking PROFIBUScompatible PLCs and field devices at the cell and field levels
Slot time
Wait-to-receive time (or wait-to-reply time); the length of time the
sender (initiator) of a frame must wait for the receiving station to
respond. It is immaterial whether this is a message or data frame or
a token frame.
SRD
Send and Request Data: Data transmission service provided by
layer 2 for acyclic send and request mode
Star coupler
active star coupler
Station
Device/PLC capable of transmitting and receiving data via the LAN
bus
Station address
Each station has an address (assigned to it as a parameter) to
enable send and receive jobs to be uniquely assigned to it
Status byte
Diagnostic byte for flagging the status of a job and any errors in
data transmission
Subminiature D connector
9-pin plug or male connector to DIN 41652
Subminiature D socket
9-pin socket or female connector to DIN 41652
T
Target rotation time
The maximum permissible token rotation time
Terminating resistor
Resistance or resistance network used to match the line
impedance of LAN cables; terminating resistors are always required
at the end of the cable or segment
Terminator
terminating resistors
Token
A defined bit string ("assigned"/"unassigned") authorizing a station
to send data over the LAN
Token hold time
The difference between the target rotation time and the token
rotation time; the active station only has this time at its disposal for
sending data over the LAN
Token passing method
Bus access method when all stations are active;
the token (permission to send) is passed from one station to
another while all stations are logically interconnnected
C-6
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
List of Abbreviations/Glossary
Token rotation cycle
The time that elapses between transmitting and receiving a token
frame by an active station.
Token rotation time
The period, in the view of the active station, during which the
station was not in the possession of the token
Transmission technology
Types of data transmission
RS485 transmission technology
FO transmission technology
Transmission mechanisms enabling data transmission to be
optimally adapted to the particular situation
Z
ZP input area
Area in a data block (DB) containing the data received in the case
of cyclic I/O
ZP master
ZP station capable of interrogating other ZP stations
ZP output area
Area in a data block (DB) containing the data to be sent in the case
of cyclic I/O
ZP slave
ZP station that can be interrogated by a ZP master
ZP slave life list
Diagnostic area in a data block (DB) or flag byte of the ZP master
for flagging current ZP slave errors or faults
EWA 4NEB 812 6112-02
C-7
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D
List of Accessories and Order Numbers
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
D
List of Accessories and Order Numbers
List of Accessories and Order Numbers
Order Number
S5-95U programmable controller with SINEC L2 interface
6ES5 095-8MB02
S5-90U/S5-95U system manual
with User's Guide S5-90U and S5-95U
6ES5 998-8MA12
6ES5 998-8MA22
6ES5 998-8MA32
6ES5 998-8MA42
6ES5 998-8MA52
German
English
French
Spanish
Italian
SINEC L2 interface for the S5-95U programmable controller manual
German
English
French
Spanish
Italian
6ES5 998-8MB12
6ES5 998-8MB22
6ES5 998-8MB32
6ES5 998-8MB42
6ES5 998-8MB52
Bus-Specific accessories for RS 485 transmission technology
SINEC L2 bus connector IP 20
SINEC L2 bus connector IP 20 with PG socket
SINEC L2 bus terminal RS 485
1.5 m, approx. 5 ft
3,0 m,
10 ft
SINEC L2 bus terminal RS 485 with
attached PG interface
1.5 m,
5 ft
SINEC L2 repeater for
nominal operating voltage 24 V, IP 20
SINEC L2 repeater for
nominal operating voltage 24 V, IP 65
SINEC L2 bus cable (indoors)
SINEC L2 bus cable (buried)
6ES5 762-1AA11
6ES5 762-1AA21
6GK1 500-0AA00
6GK1 500-0AA00
6GK1 500-0DA00
6GK1 510-0AC00
6GK1 510-0AD00
6XV1 830-0AH10
6XV1 830-3AH10
Bus-Specific accessories for Fiber Optic transmission technology
SINEC L2FO PF bus terminal for plastic FO cable
SINEC L2FO SF bus terminal for glass FO cable
Active star coupler AS 501 A
Active Star coupler AS 501 B
SINEC L2FO one-port module OPM
SINEC L2FO one-port module OSM
SINEC L2FO SF repeater adapter für glass FO cable
SINEC L2FO connecting cable plastic with
HP connector
5 m, approx.
10 m,
15 m,
20 m,
25 m,
EWA 4NEB 812 6112-02a
6GK1 500-1AA00
6GK1 500-1AB00
6GK1 501-0AA00
6GK1 501-0AB00
6GK1 501-1AA00
6GK1 501-1AB00
6GK1 510-1AA00
16 ft
33 ft
49 ft
66 ft
82 ft
6XV1 830-4AH50
6XV1 830-4AN10
6XV1 830-4AN15
6XV1 830-4AN20
6XV1 830-4AN25
D-1
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E
Technical Specifications; Cycle Delay Times of the PLC Caused by SINEC L2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
E
Technical Specifications; Cycle Delay Times
Technical Specifications; Cycle Delay Times of
the PLC Caused by SINEC L2 Operations
Climatic Environmental Conditions
see S5-90U/S5-95U System Manual
Mechanical Environmental Conditions
see S5-90U/S5-95U System Manual
Electromagnetic Compatibility (EMC), Noise Immunity
see S5-90U/S5-95U System Manual
IEC-/VDE Information
see S5-90U/S5-95U System Manual
Data Specific to SINEC L2 (continued)
Interface
Transmission type
Transmission protocol
for layers 1 and 2 of the
ISO-7 layer design
Access procedure
- between active stations
- between active and passive stations
Internal Technical Specifications
see S5-90U/S5-95U System Manual
Worst Case PLC Delay Time caused by SINEC L2
Operation
- with standard connections
550 to 650 µs*
- with PLC to PLC conn. at every L2 FB call 500 to 650 µs*
Number of stations
- total (active and passive)
- active, max.
- for one segment, max.
Transmission rate
(adjustable in DB1)
- with cyclical I/Os when transferring ZP data
at the ZP cycle control point
400 to 600 µs*
* depending on the amount of data
RS 485
bit-serial
according to
DIN 19245 part 1
token passing, to
DIN 19245, part 1
master-slave, to
DIN 19245, part 1
126
31
31
9.6
19.2
93.75
187.5
500
1500
Power Supply (Internal)
SINEC L2 Communications Services
Input voltage
- rated value
DC 24 V
- permissible range
20 to 30 V
Current consumption from 24 V
- for the S5-95U
typ. 280 mA
- with full ext. I/O configuration
typ. 1.2 A
Output Voltage
- V 1 (for external I/Os)
+9 V
- V 2 (for PG and SINEC L2 interface) +5.2 V
Output Current
- from V 1
1A
- from V 2 (total)
0.65 A
- from V 2 for SINEC L2 interface
0.1 A
Short-circuit protection for V 1, V 2 (PG) yes, electronic
Short-circuit/overvoltage protection
yes, fuse
for V 2 (SINEC L2 interface)
250 mA, quick act.
Floating
no
Degree of protection
class I
Back-up battery
see S5-90U/S5-95U System Manual
Standard connections
- amount of data per job
1 to 242 bytes
- accessible destination address
(for transmitting)
1 to 31
- possible source address
(for receiving)
1 to 31
- broadcast available
yes
Data Specific to Onboard I/Os
see S5-90U/S5-95U System Manual
Data Specific to SINEC L2
Main processor
80C537
Communications processor
V25+ with SPC
(Siemens PROFIBUS controller)
Bus cable
two-wire, shielded,
twisted cable
EWA 4NEB 812 6112-02
kBaud
kBaud
kBaud
kBaud
kBaud
kBaud
PLC to PLC connections
- amount of data per job
1 to 242 bytes
- accessible destination address
(for transmitting)
1 to 31
- possible source address
(for receiving)
1 to 31
- broadcast available
no
Cyclic I/O
- ZP master
- ZP slave
- amount of data for ZPE
yes, for max. 32 ZP slaves
yes
0 to 128 DW (ZP master)
0 to 121 DW (ZP slave)
- amount of data for ZPA
0 to 128 DW (ZP master)
0 to 121 DW (ZP slave)
- accessible destination address
(ZP master, for transmitting) 1 to 126
- possible source address
(ZP slave, for receiving)
1 to 31
- Broadcast available
no
E-1
Technical Specifications; Cycle Delay Times
S5-95U, SINEC L2
SINEC L2 Communications Services (Continued)
Integral Blocks
Layer 2 Services
- Amount of data per job
0 to 242 bytes
- Reachable destination address
(when sending data)
1 to 126
- Possible source address
(when receiving data)
1 to 126
- Number of layer 2 accesses 23 (SAP 33 to 54, 64)
Integral Organization Blocks
- OB1
cyclical program scanning
- SDA
- OB3
interrupt-driven program processing
- OB13
time-controlled program processing
- OB21
start-up program processing
(manual cold restart)
Active station sends data to an
active or passive station
- OB22
start-up program processing
(power recovery)
- SDN
Active station sends data to
several active or passive stations
- OB31
cycle trigger
- OB34
battery failure
- RUP_SINGLE
Active or passive station holds
data ready for fetching once only
by an active station
- OB251
PID control algorithm
- RUP_MULTIPLE
Active or passive station holds
data ready for fetching by several
active or passive stations
- SRD
Active station sends data and/or
fetches data held ready for it from
an active or passive station
FMA Services
- LAS_LIST_CREATE
- MAC_EVENT
- FDL_STATUS
- READ_VALUE
- TIME_TTH_READ
local service
(no additional bus load)
local service
(no additional bus load)
remote service
(additional bus load)
local service
(no additional bus load)
local service
(no additional bus load)
Integral Function Blocks
- FB240
code converter: BCD4 to 16-bit
fixed point
- FB241
code converter: 16-bit fixed point
to BCD4
- FB242
multiplier: 16-bit fixed point
- FB243
divider: 16-bit fixed point
- FB250
reading in analog values
- FB251
outputting analog values
- FB252
L2-SEND
- FB253
L2-RECEIVE
Programmer Functions
E-2
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
Baud Rate in
Kbits/s
!
Baud Rate in
Kbits/s
Technical Specifications; Cycle Delay Times
Distance Table for RS 485 Technology:
Number of Segments Connected in Series
2
3
4
5
6
7
8
9.6; 19.2; 93.75 1.2 km
2.4 km
3.6 km
4.8 km
6.0 km
7.2 km
8.4 km
9.6 km
187.5
1.0 km
2.0 km
3.0 km
4.0 km
5.0 km
6.0 km
7.0 km
8.0 km
500
0.4 km
0.8 km
1.2 km
1.6 km
2.0 km
2.4 km
2.8 km
3.2 km
1500
0.2 km
0.4 km
0.6 km
0.8 km
1.0 km
-
-
-
1
Caution
In extensive networks, the potential difference between two stations may exceed ± 7 V.
Should this be the case, make sure that the necessary equipotential bonding measures
are taken, otherwise the SINEC L2 interface will be destroyed.
Distance Table for Glass Fiber Optic Cable Technology:
Number of Segments Connected in Series
1
EWA 4NEB 812 6112-02
2
3
4
5
9.6; 19.2;
93.75; 187.5
1.4 km 2.8 km 4.2 km 5.6 km 7.0 km 8.4 km 9.8 km
500
1.4 km 2.8 km 4.2 km 5.6 km 7.0 km 8.4 km -
-
1500
1.4 km 2.8 km 4.2 km -
-
-
6
-
7
-
16
.......
23.8 km
Interrupt Response Time and PLC Cycle Delay Time
Increasing the interrupt response time
Since process interrupts cannot interrupt on-going SINEC L2 processing, the increase in the
interrupt response time - worst case - corresponds to the cycle delay time caused by the current
SINEC L2 function. In the case of programmer functions, the worst-case increase in the interrupt
response time is 850 µs. (For calculation of the interrupt response times without SINEC L2 see S590U/S5-95U System Manual, section 10.3).
The table overleaf lists the worst-case times for PLC cycle delay times in connection with data
transmission over the SINEC L2 LAN.
E-3
S5-95U, SINEC L2
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Technical Specifications; Cycle Delay Times
Type of
Data Transmission
Prerequisites
Standard
connection
Sending and/or
receiving is
enabled
Amount of
Data
When PLC Scan
Cycle Loaded
1 to
242 bytes
When sending:
The PLC scan
cycle is loaded
when the send job
is registered by the
operating system
(this takes place
within 10 ms)
PLC Cycle Delay Time
as Sender or Receiver
Worst case for 1 byte:
550 µs
Worst case for
242 bytes:
650 µs
When receiving:
The PLC scan
cycle is loaded
when receive data
has arrived at
receive mailbox.
PLC-to-PLC
connection/
layer 2
services
When sending:
Send job is
possible
1 to 242
bytes
(PLC/PLC)/
0 to 242
bytes
(layer 2)
Every time an L2FB is invoked
(FB252, FB253)
When receiving:
Receive data
are available
Cyclic I/O
Cyclic I/O is
defined
When assigning
parameters direct to the
L2-FBs:
worst case for 1 byte:
500 µs
worst case for 242 bytes:
600 µs
When assigning
parameters indirectly to
the L2-FBs:
worst case for 1 byte:
550 µs
worst case for 242 bytes:
650 µs
ZP master: 1
to 128 words
ZPA and/or 1
to 128 words
ZPE
ZP slave:
1 to 121
words ZPA
and/or 1 to
121 words
ZPE
When transferring
the ZP data at the
ZP cycle
checkpoint (prior to
the OB1 cycle)
Worst case for 1 word
ZPA and 1 word ZPE:
400 µs
Worst case for 128 words
ZPA and 128 words ZPE:
600 µs
Programmer functions:
Programmer functions vary considerably regarding their influence on the cycle delay time and
therefore no generally valid times can be specified.
E-4
EWA 4NEB 812 6112-02
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F
S5-95U Communications Matrix and Emulation of Types of Data Transmission
on Layer 2 with the S5-95U
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
F
*
EWA 4NEB 812 6112-02
S5-95U Communications Matrix and Emulation of Transmission
Types on Layer 2
S5-95U Communications Matrix and Emulation
of Types of Data Transmission on Layer 2 with
the S5-95U
The following overview lists the Siemens devices with which the S5-95U can communicate, as well
as the respective data transmission connections and services.
The matrix represents only the present state of the art (08/93).
S5-95U, Order No. 6ES5 095-8MB12
Device
Order No.
Standard
Conn.
PLC-PLC
Conn.
ZP
Master
ZP
Slave
S5-95U
6ES5 095-8MB21
x
x
x
x
S5-95U
6ES5 095-8MB22
x
x
x
x
x
CP5430-0
6GK1 543-0AA00
x
x
x
CP5430-1
6GK1 543-0AA01
x
x
x
Layer 2
Services
PC conn. FDL-NET5412/MS-DOS
x
TD10/220-5*
6AV3 010-1DK00
x
TD10/240-8*
6AV3 010-1EL00
x
TD20/240-8*
6AV3 020-1EL00
x
OP20/220-5*
6AV3 520-1DK00
x
OP20/240-8*
6AV3 520-1EL00
x
OP30/A*
6AV3 530-1RR00
6AV3 530-1RR20
6AV3 530-1RR01
6AV3 530-1RR21
x
OP30/B*
6AV3 530-1RR10
6AV3 530-1RR30
6AV3 530-1RR11
6AV3 530-1RR31
x
OP30/C*
6AV3 530-1RS31
x
Under development (possible only with standard function block FB55 for the TD/OP link to SIMATIC S5, Order No. 6AV3
980-1AA21-0AX0 and over the SINEC L2 S5 module option, Order No. 6AV3 970-1XB30-0AA0)
F-1
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S5-95U Communications Matrix and Emulation of Transmission
Types on Layer 2
Type of Data
Transmission
Standard
Connection
PLC-PLC
Connection
F-2
L2 Frame
Send frame:
• SDA low
• SDN low for
broadcasting
Receive frame, active
stations:
• SDA low,
• SDA high,
• SDN low and SDN
high permitted
Send frame:
• SDA low
Receive frame:
• Only SDA low
permitted
Receive frame:
• 1 to 242 bytes
permitted
Send frame:
• 1 to 242 bytes
Receive frame:
• 1 to 242 bytes
permitted
When sending:
• Local SAP = destination address
+1
• Remote SAP =
local address + 1
S5-95U, SINEC L2
Emulation of Types of Data Transmission for the S5-95U on Layer 2
Length of L2 Frame
(in Net Data)
L2 SAPs (Default
SAP not Permitted)
L2 Source
Addresses
Send frame:
• 1 to 242 bytes
When sending:
• Local SAP = 56
• Remote SAP = 56
When receiving:
• All source addresses
permitted
When receiving:
• Local SAP = 56
• Remote SAPs, only
56 permitted
Receive frame,
passive stations:
• Only SDN low
permitted
When receiving:
• Only source address
= local SAP - 1
permitted
When receiving:
• Local SAP =
source address
+1
• All remote SAPs
permitted
EWA 4NEB 812 6112-02
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S5-95U, SINEC L2
Type of Data
Transmission
ZP Master
Special Feature:
EWA 4NEB 812 6112-02
S5-95U Communications Matrix and Emulation of Transmission
Types on Layer 2
Emulation of Types of Data Transmission for the S5-95U on Layer 2 (Continued)
L2 Frame
Send frame of ZP
master:
• SRD low
Response frame from
ZP slave:
• RESPONSE low
and RESPONSE
high permitted
Receive frame:
• SDA low/high
• SDN low/high
• SRD low/high
Length of L2 Frame
(in Net Data)
ZP Slave
Response frame of ZP Response frame of ZP When receiving:
slave:
slave:
• Local SAP of ZP
• RESPONSE low
• 0 to 242 bytes
slave = 61
• Remote SAPs of
Receive frame from
Receive frame from
ZP master = 0 to
62 permitted
ZP master:
ZP master:
• SRD low only
• 0 to 242 bytes
permitted
permitted
When receiving:
• All source addresses
permitted
Layer 2 Services
Send frame:
• SDA low/high
• SDN low/high
• SRD low/high
When receiving:
• All source addresses
permitted
Send frame:
• 0 to 242 bytes
Receive frame:
• 0 to 242 bytes
permitted
L2 SAPs (Default
SAP not Permitted)
Send frame of ZP
master:
• 0 to 242 bytes
When sending:
• Local SAP of ZP
master = 61
• Remote SAPs of
Response frame of ZP
ZP slaves =
slave:
0 to 62
• 0 to 244 bytes
(configurable in
permitted
DB1)
When sending:
• Local SAP = 33 to
54, 64 (default
SAP permitted)
• All remote SAPs
permitted
L2 Source
Addresses
-
When receiving:
• Local SAP = 33 to
54, 64 (default
SAP permitted)
• All remote SAPs
permitted
If an S5-95U is in the STOP mode, receiving of a frame via the standard
connection (not broadcasting) and the PLC-to-PLC connection (local SAP=56
and 2 to 32) is acknowledged on layer 2 with ”UE” (FDL/FMA 1/2-User Error) if
the connection was properly configured in the local S5-95U.
F-3
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Index
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Index
Index
A
AS 501 active star coupler
1-25, 1-27
B
BF LED
3-7
Bit time unit
1-9, 1-10
Broadcasting
1-7, 1-16, 4-1,
4-5, 4-14
Bus cable
- routing the
1-3, 1-24, 2-2
2-8
Bus connector
- mounting
- SINEC L2
1-3, 1-23, 2-3
2-2
2-2
Bus parameter block
3-22
Bus segment
- connecting, to the L2 repeater
1-3, 1-21, 2-2
2-6
Bus terminal
- RS 485
1-23
1-3
Cyclic I/O (continued)
- slave life list
- start-up sequence
7-8, 7-9, 7-14
7-3
D
Data exchange
7-1, 7-2
Data transmission type
- emulation on layer 2
- PLC to PLC connection
- standard connection
- cyclic I/O
F-3
6-1
4-1
7-1
DB1
-
example
input
parameter assignment error
parameters
- preset in the programmable
controller
A-3
1-11
A-7
3-13, 4-3, 6-5,
7-6, 8-10
4-3
DB1 basic parameters
- rules for setting
1-9, A-7
1-10
Default
- DB1
- parameters
4-3
1-8
Default SAP
8-7
Diagnostics
3-10
Diagnostics functions
3-8, 3-10
3-3
Direct parameter assignment
5-4
com_class
3-11, 8-8
Double token
3-27
Configuring
- a system
3-5
E
Confirmation
3-10, 3-11, 3-14
Equipotential bonding
2-5
Event parameter block
3-27
1-13
C
CBR
Coordination byte
CBS
Coordination byte
Communication
- explicit
- implicit
Communications processor
- tasks
1-13
Coordination byte
- ‘Receive’ (CBR)
- ‘Send’ (CBS)
4-2, 4-3, 4-8, 4-14
4-2, 4-3, 4-6, 4-14
Explicit communication
CP 5410 communications processor
CP 5412 communications processor
1-12, 9-1
1-12, 9-1
F
CP 5430 communications processor
1-12, 6-3, 7-4
Cyclic I/O
- characteristics
- cycle control point
- data exchange
- DB
- input area
- master
- output area
- safety function
- slave
1-12, 7-1, 7-2
1-14
7-3
7-1, 7-2
7-4, 7-5
7-5
7-1, 7-4, 7-5
7-5
7-3
7-1, 7-5
Cycle delay time
EWA 4NEB 812 6112-02
E-3
FB222
3-14
FB223
8-11
FB224
8-11
FB252
see: Standard function blocks
FB253
see: Standard function blocks
FDL_STATUS
3-14, 3-19
Female D connector
- pin assignment
3-3
Field bus management
3-10
Field device
1-4
1
Index
S5-95U, SINEC L2
M
Flag byte 255 see: Parameter
assignment error byte
FMA header
see: Header
FMA service
- DB1 parameters
- characteristics
- prerequisites to using
3-10
3-13
3-12
3-12
Frame
- type of
A-5
MAC_EVENT
- activate
3-14, 3-26
3-13
Male D connector
2-3
Master-slave principle
1-5
Multicasting
1-17, 1-16, 8-19
N
Net data
G
Gap update factor
3-22
Grounding methods
2-4
H
4-2, 4-5, 4-7, 6-2
O
Operating principle
- of the programmable controller
3-3
P
Header
3-11, 8-3
PAFE
Hierarchy levels
- in an automation network
1-1
PG 685
PG 730
PG 750
9-1
9-1
9-1
Implicit communication
1-13
Indication
3-14, 3-26, 8-3,
8-4
3-26
PG 770
PG slave
Parameters
9-1
9-2
5-3
Parameter assignment
- direct
- indirect
5-4
5-4
Parameter assignment error
- in DB1
- in L2-SEND
- in L2-RECEIVE
3-14
A-7
5-5
5-5
Parameter assignment error byte
(PAFE)
- structure of
5-5
5-5
I
- header
Indirect parameter assignment
5-4
Installation
- components
2-1
Installing
- a system
3-5
Interrupt response time
E-3
J
Job number
5-2, 6-1, 6-4
L
L2 FBs see:
Standard function blocks
L2 interface
- connecting, to the network
- connector assignment
3-6
3-3
see: Parameter assignment
error byte
Partial configuration
- typical
1-18
PLC to PLC connection
- characteristics
- DB1 parameters
6-1
1-12
6-5
PLC cycle control point
PLC cycle delay time
Potential differences
7-3
E-3
2-5
Priorities of message frames
1-6
Priority
- of a connection
1-6
PROFIBUS
1-3
LAS_LIST_CREATE
3-17
Layer 1
Layer 2
8-1
8-1
Layer 2 services
- DB1 parameters
- characteristics
8-1
8-10
1-14
Length byte
5-6, 6-4, 8-9
R
Lightning protection
2-8
READ_VALUE
3-21
3-11, 3-17, 3-19,
3-21, 3-24, 8-17,
8-21, 8-24, 8-27,
8-31
Receive mailbox (RM)
4-2, 4-3, 4-7, 4-14
rem_add_segment
8-8
rem_add_station
3-11, 8-8
link_status
2
EWA 4NEB 812 6112-02
S5-95U, SINEC L2
Repeater
Index
1-24, 2-4, 2-6, 2-7
Repeater adapter
1-29
Request
3-10, 3-11, 3-14,
8-3, 8-4
RESPONSE
F-3
Response time ZP slave repsonse
time
RM Receive mailbox
RS 485 SINEC L2 repeater
see:
Repeater
RUP_MULTIPLE
RUP_SINGLE
8-26
8-23
S
Safety functions
7-3
SAP
8-23, 8-26, B-1,
F-2
SAP number
7-3, 8-6, 8-9, B-1
SC
see:
Standard connection
SDA
8-15, A-5, F-2
SDN
8-19, A-5, F-2
SDT1
see:
Station delay time
SDT2
see:
Station delay time
Segment
2-7
Send mailbox (SF)
4-2, 4-3, 4-5, 4-14
Service access point
see:
SAP
Service request
3-10
service_code
3-11, 3-14, 8-8
SET
see:
Set-up time
Set-up time
SF
see:
A-7
Send mailbox
SRD
- without send data
ST
SINEC L2 bus segment
see:
Bus segment
Slot time
Standard connection
- characteristics
- DB1 parameters
4-1
1-14
4-3
Standard function blocks
- assigning parameters to
- L2-SEND (FB252)
- L2-RECEIVE (FB253)
- parameters
5-6, 6-1
5-4
5-1
5-1
5-3
Star coupler AS 501
- active
1-25, 1-27
Star network
1-20
Start-up
- sequence
- steps for
- testing during
- test possibilities
3-4
3-8
3-26
3-8
Station
- active
- address
- passive
1-4, 1-9
1-4, 4-1
1-4, 1-9
Station delay time
- shortest
- longest
A-7
A-7
Status byte (STB)
- error
- error codes
- for the ZP slave
- for the ZP master
- ‘Receive’
- ‘Transmit’
5-6, 7-4, 7-7
3-14
5-7
7-10
7-8
6-2, 6-4, 8-9
6-2, 6-4, 8-9
Status byte error
3-16
Status indication
- of the ZP slave
7-9
STB
SINEC L2 bus connector
see:
Bus connector
see:
8-29, A-5, F-3
8-30
see:
Status byte
Subminiature D connector
2-3
Supply voltage
- connecting the
2-5
SINEC L2 installation
- components
2-1
T
SINEC L2 network
1-21
Target rotation time
- calculating the
1-6, 3-22
A-5
SINEC L2FO bus terminal SF-B/PF-B
1-26
Terminal cable
1-3
SINEC L2FO network
1-25
Terminator
2-6, 2-8
SINEC L2 repeater RS 485
Repeater
SINEC L2FO SF repeater adapter for
L2 repeater
1-29
Slot time
A-7
SM
Testing
- during start-up
3-11
TIME_TTH_READ
3-24
TLN
see:
Station address
Send mailbox
EWA 4NEB 812 6112-02
3
Index
S5-95U, SINEC L2
Token
- cycle
- frame
- hold time
- passing
1-4, 1-5
1-4, 1-5, A-5,
1-7, 3-24
1-5
Transmission technology
- RS 485
- FO
1-21
1-21
TRT
see:
Target rotation time
U
user_id
3-11
W
Wildcard length
5-3
Z
ZP
see:
Cyclic I/O
ZPA
see:
ZP output area
ZPE
see:
ZP input area
ZP input area (ZPE)
- lower limit
- upper limit
7-2, 7-3
7-6
7-6
ZP output area (ZPA)
- lower limit
- upper limit
7-2, 7-3
7-6
7-6
ZP slave life list
7-2, 7-3, 7-14
ZP slave response time
7-10, 7-11
ZP slave watchdog
7-11
4
EWA 4NEB 812 6112-02
Siemens AG
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Federal Republic of Germany
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