Welcome to LOGO!

Welcome to LOGO!
Welcome to LOGO!
Dear Customer,
We thank you for the purchase of LOGO! and congratulate you on
your decision. With the LOGO! you have acquired a logic module
that meets the stringent quality requirements of ISO 9001.
LOGO! can be used in many fields of applications. Due to its high
functionality and yet easy operation the LOGO! offers you highly
efficient economies for almost any application.
LOGO! documentation
This LOGO! Manual contains information relating to the installation, programming and the use of LOGO! 0BA3 Basic devices and
LOGO! 0BA0 expansion modules as well as their down compatibility to the previous Basic devices 0BA0, 0BA1 and 0BA2 (0BAx
are the last four characters of the order number, used to distinguish the module series).
You can find information on wiring the LOGO! in the LOGO! manual and in the product info included with every device. Find supplementary information re programming the LOGO! with the PC in
the Online Help for LOGO!Soft Comfort.
LOGO!Soft Comfort is the programming software for PCs. It runs
under Windows, Linux, and Mac OS X and helps you to get
familiarized with your LOGO! and to write, test, print out and archive your programs, independent of the LOGO! .
Guide to the manual
We have divided this manual into 9 chapters:
Working with LOGO!
Installing and wiring the LOGO!
Programming LOGO!
LOGO! Functions
Configuring LOGO!
LOGO! Program Modules
LOGO! Software
Applications
Appendices
LOGO! Manual
A5E00119092-01
i
Welcome to LOGO!
Major changes to previous Basic devices (0BA0 to 0BA2)
The design of LOGO!Basic versions is improved: all versions
are equipped with 8 inputs and 4 outputs.
LOGO!Basic is modular: all versions are equipped with an expansion interface.
LOGO! is a versatile equipment: there is a series of expansion
modules available to you, including, for example, digital modules and an analog module.
New features of the current Basic devices (0BA3)
Password protection for the user program.
Program name.
Special ’Softkey’ function.
New menu item “S/W Time” for automatic summertime/wintertime conversion.
Acknowledgment of the message text in RUN mode.
Wall mounting is possible.
Additional support
Queries related to your LOGO! can be answered quickly and easily on our website http://www.ad.siemens.de/logo .
ii
LOGO! Manual
A5E00119092-01
Welcome to LOGO!
Safety guidelines
The notes in this user manual are for your own personal safety
and for preventing damage to assets. You should read them carefully and follow the instructions they give you. These instructions
are highlighted by a warning triangle and are marked as follows
according to their danger level:
!
!
!
Danger
Warns that death, serious harm to health or damage to
assets will result if the respective precautionary measures are not taken.
Warning
Warns that death, serious harm to health or damage to
can result if the respective precautionary measures
are not taken.
Caution
Warns that harm to health or damage to assets can
result if the respective precautionary measures are not
taken.
Note
Draws your attention to particularly important information relating to the product and its handling, or to a part
of the documentation requiring your special attention.
!
Warning
LOGO! Manual
A5E00119092-01
Only skilled personnel should be allowed to start and
operate this device. Qualified personnel in the sense of
the information on safety technology in this manual are
persons who are authorized to commission, to ground
and to tag circuits, equipment and systems in accordance with safety regulations and standards.
iii
Welcome to LOGO!
!
Warning
This device must always be used as intended for the
applications described in the catalog and in the technical specifications, and only in combination with non–
Siemens devices or components approved or recommended by Siemens .
Prerequisite for the safe and correct functioning of the
product is its proper transportation, storage, commissioning and installation as well as meticulous operation
and maintenance.
Copyright Siemens AG 1996 to 2001 All rights reserved
The reproduction, distribution or use of this document or its contents is not permitted without
express written authority. Offenders will be liable for damages. All rights reserved, in
particular in the event of patents being granted or the registration of a utility model or design.
Disclaimer of liability
We have examined the contents of this publication for agreement with the hardware and
software described. Nevertheless, discrepancies cannot be ruled out. Any liability and
warranty for the accuracy of this information is excluded. The data in this manual are
reviewed at regular intervals. Any corrections required are included in the subsequent
editions. Suggestions for improvement are welcomed.
iv
LOGO! Manual
A5E00119092-01
Contents
1
Working with LOGO! . . . . . . . . . . . . .
1
2
Installing and wiring the LOGO! . . .
11
2.1
2.1.1
2.1.2
2.2
2.2.1
2.2.2
2.3
2.3.1
2.3.2
2.3.3
2.4
Structure of the modular LOGO! . . . . . . . . . . . . . . . .
Maximum structure . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Structure with different voltage classes . . . . . . . . . . .
Installing/uninstalling LOGO! . . . . . . . . . . . . . . . . . .
Profile rail mounting . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wall-mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring the LOGO! . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the Power Supply . . . . . . . . . . . . . . . . . . .
Connecting LOGO! inputs Connecting . . . . . . . . . . .
LOGO! Outputs connecting . . . . . . . . . . . . . . . . . . . . .
Switching on the LOGO!/Power return . . . . . . . . . .
13
13
14
15
16
20
22
22
24
29
31
3
Programming LOGO! . . . . . . . . . . . . .
35
3.1
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
36
3.2
3.3
3.4
3.5
Blocks and Block Numbers . . . . . . . . . . . . . . . . . . . . .
The way from the Circuit Diagram to LOGO! . . . . .
The 4 Golden Rules for Working with LOGO! . . . .
Overview of the LOGO! Menus . . . . . . . . . . . . . . . . .
39
42
45
47
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v
Contents
3.6 Program Input and Start . . . . . . . . . . . . . . . . . . . . . . .
3.6.1 Change to Programming mode . . . . . . . . . . . . . . . . . .
3.6.2 First Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.3 Editing a Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.4 Assigning a Program Name . . . . . . . . . . . . . . . . . . . .
3.6.5 Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.6 LOGO! to RUN mode . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.7 Your Second Program . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.8 Deleting a Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.9 Deleting Multiple Interconnected Blocks . . . . . . . . . .
3.6.10 Correcting Typing Errors . . . . . . . . . . . . . . . . . . . . . . .
3.6.11 ”?” on the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.12 Deleting a Program . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.13 Summertime/Wintertime Conversion . . . . . . . . . . . . .
3.7 Memory Space and Size of a Circuit . . . . . . . . . . . . .
48
48
49
51
55
57
61
63
69
70
71
71
72
73
77
4
LOGO! Functions . . . . . . . . . . . . . . . .
81
4.1
Constants and Connectors – Co . . . . . . . . . . . . . . . .
82
4.2 List of basic functions – BF . . . . . . . . . . . . . . . . . . . .
4.2.1 AND (AND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2 Edge-triggered AND . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.3 NAND (AND not) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.4 NAND With Edge Evaluation . . . . . . . . . . . . . . . . . . .
4.2.5 OR (OR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.6 NOR (OR not) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.7 XOR (exclusive OR) . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.8 NOT (Negation, Inverter) . . . . . . . . . . . . . . . . . . . . . . .
85
87
87
88
89
89
90
91
91
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LOGO! Manual
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Contents
4.3 Basics on special functions . . . . . . . . . . . . . . . . . . . .
4.3.1 Designation of the inputs . . . . . . . . . . . . . . . . . . . . . . .
4.3.2 Time Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.3 Buffering The Clock . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.4 Retentivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.5 Parameter Protection . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.6 Gain and Offset Calculation With Analog Values . . .
4.4 List of Special Functions – SFr . . . . . . . . . . . . . . . . .
4.4.1 On Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.2 Off Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.3 On/Off Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.4 Retentive On Delay . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.5 Latching Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.6 Pulse Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.7 Wiping Relay – Pulse Output . . . . . . . . . . . . . . . . . . .
4.4.8 Edge–triggered Wiping Relay . . . . . . . . . . . . . . . . . . .
4.4.9 Weekly Timer Switch . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.10 Yearly Timer Switch . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.11 Up/Down Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.12 Operating Hours Counter . . . . . . . . . . . . . . . . . . . . . .
4.4.13 Symmetric Clock Generator . . . . . . . . . . . . . . . . . . . .
4.4.14 Asynchronous Pulse Generator . . . . . . . . . . . . . . . . .
4.4.15 Random Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.16 Frequency Threshold Trigger . . . . . . . . . . . . . . . . . . .
4.4.17 Analog Threshold Switch . . . . . . . . . . . . . . . . . . . . . . .
4.4.18 Analog Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.19 Stairway Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.20 Multifunctional switch . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.21 Message Texts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.22 Softkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOGO! Manual
A5E00119092-01
92
93
94
95
95
96
96
98
101
103
105
107
109
111
112
114
115
120
122
124
128
130
131
133
135
138
141
143
145
148
vii
Contents
5
Configuring LOGO! . . . . . . . . . . . . . . .
5.1 Switching To Parameter Assignment Mode . . . . . .
5.1.1 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1.2 Selecting the Parameters . . . . . . . . . . . . . . . . . . . . . .
5.1.3 Changing the Parameters . . . . . . . . . . . . . . . . . . . . . .
5.2 Setting the Time–of–day and the Date
(LOGO! ... C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
151
152
153
154
155
158
6
LOGO! Program Modules . . . . . . . . .
159
6.1
6.2
6.3
6.4
Overview of the Modules . . . . . . . . . . . . . . . . . . . . . . .
Removing and Inserting Modules . . . . . . . . . . . . . . .
Copying from the LOGO! to the Module . . . . . . . . .
Copying from the Module to LOGO! . . . . . . . . . . . .
160
161
163
165
7
LOGO! Software . . . . . . . . . . . . . . . . .
7.1
Connecting the LOGO! to a PC . . . . . . . . . . . . . . . . .
viii
167
169
LOGO! Manual
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Contents
8
Applications . . . . . . . . . . . . . . . . . . . . .
171
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.2
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.3
8.3.1
8.3.2
8.4
8.4.1
8.4.2
8.4.3
Staircase or Corridor Lighting . . . . . . . . . . . . . . . . . .
Demands on a Staircase Lighting System . . . . . . . .
Previous Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lighting System with LOGO! . . . . . . . . . . . . . . . . . . .
Special Features and Expansion Options . . . . . . . . .
Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Demands on an Automatic Door . . . . . . . . . . . . . . . .
Previous Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Control System with LOGO! . . . . . . . . . . . . . . .
Special Features and Expansion Options . . . . . . . . .
Enhanced solutions with LOGO! 230 RC . . . . . . . . .
Air–conditioning System . . . . . . . . . . . . . . . . . . . . . . .
Demands on an air–conditioning System . . . . . . . . .
Advantages of Using LOGO! . . . . . . . . . . . . . . . . . . .
Industrial Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Demands on the Gate Control System . . . . . . . . . . .
Previous Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring the LOGO! solution . . . . . . . . . . . . . . . . . . . . .
172
172
172
173
175
176
176
177
177
180
180
183
183
186
188
188
189
191
Centralized Control and Monitoring of
Several Industrial Gates . . . . . . . . . . . . . . . . . . . . . . . .
8.5.1 Demands on the Gate Control System . . . . . . . . . . .
192
193
8.5
8.6 Luminous rows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.6.1 Demands on the Lighting System . . . . . . . . . . . . . . .
8.6.2 Previous Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.6.3 Luminous row control with LOGO! 230 RC . . . . . . .
8.7 Service water pump . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.7.1 Demands on the control system of a service
water pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.7.2 Previous Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.7.3 Service water pump with LOGO! 230 RC . . . . . . . . .
8.7.4 Special Features and Expansion Options . . . . . . . . .
8.8
Further Application options . . . . . . . . . . . . . . . . . . .
LOGO! Manual
A5E00119092-01
196
196
197
198
200
201
201
202
203
204
ix
Contents
A
Technical Data . . . . . . . . . . . . . . . . . . .
A.1
General Technical Data . . . . . . . . . . . . . . . . . . . . . . . .
207
A.2
Technical Data: LOGO! 230... and
LOGO! DM8 230R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
209
Technical Data: LOGO! 24... and
LOGO! DM8 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
212
A.5
A.6
A.7
A.8
Technical Data: LOGO! 12/24... and
LOGO! DM8 12/24R . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data: LOGO! AM 2 . . . . . . . . . . . . . . . . . . .
Technical Data: LOGO!Power 12 V . . . . . . . . . . . . . .
Technical Data: LOGO!Power 24 V . . . . . . . . . . . . . .
Technical Data: LOGO! Contact 24/230 . . . . . . . . . .
215
218
220
222
224
B
Determining the Cycle Time . . . . . . .
225
C
LOGO! without display . . . . . . . . . . .
227
D
LOGO! Menu structure . . . . . . . . . . . .
231
Order Numbers . . . . . . . . . . . . . . . . . . . . . .
235
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . .
237
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
239
A.3
A.4
x
207
LOGO! Manual
A5E00119092-01
1 Working with LOGO!
What is LOGO! ?
LOGO! represents the universal Siemens logic module.
LOGO! integrates
Controls
An operating and display unit
Power supply
Interface for expansion modules
An interface for program modules and a PC cable
Ready–to–use basic functions that are often required in
day–to–day operation, e.g. functions for on/off delays,
current impulse relays and Softkey
Time switch
Binary markers
Inputs and outputs according to the device type
What can LOGO! do ?
LOGO! offers solutions for domestic and installation engineering (e.g. for stairway lighting, external lighting, sun
blinds, shutters, shop window lighting etc.), switch cabinet
engineering and mechanical and apparatus engineering
(e.g. for gate control systems, ventilation systems, or rainwater pumps etc.).
LOGO! can also be implemented for special control systems in conservatories or greenhouses, for control signal
processing and, by connecting a communication module
(e.g. ASi) for distributed local controlling of machines and
processes.
Special versions without operator and display unit are available for series production applications in small machine,
apparatus, switch control and installation engineering.
LOGO! Manual
A5E00119092-01
1
Working with LOGO!
Which new types of equipment are now available?
LOGO! Basically, there are two voltage classes:
Class 1 < 24 V, that is, 12 V DC, 24 V DC, 24 V AC
Class 2 > 24 V, that is, 115...240 V AC/DC
in versions:
With display: 8 inputs and 4 outputs.
Without display: 8 inputs and 4 outputs.
Each version is integrated in 4 units. It is equipped with an
expansion interface and offers you 30 ready–to–us basic
and special functions for creating your program.
Which new expansion modules are now available?
The LOGO! digital module is available for 12 V DC,
24 V DC and 115...240 V AC/DC, with 4 I/Os.
The LOGO! analog module is available for 12 V DC and
24 V DC, with 2 inputs.
The LOGO! Communication module, e.g. the function
module ASi (AS Interface bus system). This module is
described in a separate documentation.
The digital/analog modules are integrated in 2 units. Each
one has two expansion interfaces for connecting additional
modules.
Which type of equipment is obsolete?
All versions with 6 inputs.
A long variant with 12 inputs and 8 outputs
The bus version with 12 inputs and 8 outputs.
The modular strikers of LOGO! replace this type of equipment.
It’s your choice
The different basic versions and expansion modules offer
structures and precise adaptation to you specific tasks.
LOGO! provides solutions ranging from the small domestic
installation through small automation tasks to extensive
tasks integrating a bus system (e.g. the AS interface).
2
LOGO! Manual
A5E00119092-01
Working with LOGO!
Note
Every basic LOGO! unit can be expanded with expansion
modules of the same voltage class. Mechanical encoding
(pin in the housing) prevents interconnection of devices of
different voltage classes.
Exception: The left interface of the analog module or
communication module is separated from potential.
This means that these expansion modules can be connected to devices of a different voltage class. See also
Chapter 2.1 ’Structure of the modular LOGO!’.
Regardless of the number of modules connected to the
LOGO!, the following I/O and memory bits are available: I1
to I24, AI1 to AI8, Q1 to Q16 And M1 to M8.
LOGO! Manual
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3
Working with LOGO!
How the LOGO! is structured
2
10
1
8
I1 I2 I3 I4
I5 I6 I7 I8
LOGO! Basic (e.g.: 230 RC)
4
L1 N
4
90
35
6
5
1
Q1
2
1
Q2
2
1
Q3
2
1
Q4
2
3
72
55
2
9
9
8
10
1
8
11
(e.g.: DM8 230R)
7
RUN/STOP
1
Q1
2
1
Q2
1 Q3 2
90
35
LOGO! Expansion module
4
L1 N I1 I2 I3 I4
2
1Q4 2
3
53
36
1
Power supply
2
Inputs
3
Outputs
4
Module slot with
cover
4
5
Control panel
(not with RCo)
8
Expansion interface
6
LCD
(not with RCo)
9
7
Status display RUN/
STOP
Mechanical coding –
Pins
Mechanical coding
sockets
Slide
10
11
LOGO! Manual
A5E00119092-01
Working with LOGO!
2
10
1
8
4
LOGO! Basic (e.g.: 12/24 RC)
L+ M I1 I2 I3 I4 I5 I6 I7 I8
4
90
35
6
5
1
Q1
2
1
Q2
2
1
Q3
2
1
Q4
2
3
72
55
2
9
9
8
10
1
8
11
(e.g.: DM8 12/24R)
7
RUN/STOP
1
2
Q1
1
1Q3 2
Q2
90
35
LOGO! Expansion module
4
L+ M I1 I2 I3 I4
2
1 Q4 2
3
53
36
1
Power supply
2
Inputs
3
Outputs
4
Module slot with
cover
LOGO! Manual
A5E00119092-01
5
Control panel
(not with RCo)
8
Expansion interface
6
LCD
(not with RCo)
9
Mechanical coding
pins
7
Status display RUN/
STOP
10
Mechanical coding
sockets
11
Slide
5
Working with LOGO!
LOGO! AM2
9
10
1
9
8
L+ M
4
L+ M
8
11
90
RUN/STOP
35
7
12
PE
INPUT 2x(0..10V/0..20 mA)
I1 M1 U1 I2 M2 U2
2
53
36
1
Power supply
2
Inputs
7
Status display RUN/
STOP
Expansion interface
8
6
9
Mechanical coding
pins
10
Mechanical coding
sockets
11
12
Grounding terminal for
connecting ground and
shielding of the analog
measuring line.
Slide
LOGO! Manual
A5E00119092-01
Working with LOGO!
How to recognize which LOGO! model you have
The LOGO! identifier informs of various properties:
12: 12 V DC version
24: 24 V DC version
230: 115...240 V AC version
R: Relay outputs (without R: transistor outputs)
C: Integrated Weekly timer switch
o: Version without display
DM: Digital module
AM: Analog module
FM: Function module (e.g. ASi)
Symbols
Variants with display are equipped with 8 inputs and 4 outputs
Variants without display are equipped with 8 inputs and 4
outputs
The digital module is equipped with 4 digital inputs and 4
digital outputs
The analog module is equipped with 2 analog inputs
–+
Function module (e.g. ASi) with 4 virtual inputs and 4
virtual outputs
LOGO! Manual
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7
Working with LOGO!
Variants
LOGO! is available in the following variants:
Symbol
Designation
Supply
voltage
Inputs
Outputs
Properties
LOGO! 12/24RC
12/24 V
DC
8 Digital*
4 Relays
230 V x 10
A
LOGO! 24
24 V DC
8 Digital*
4 Transistor
24 V x 0.3 A
LOGO! 24RC
24 V AC
8 Digital
4 Relays
230 Vx10 A
LOGO! 230RC #
115...240 V
AC/DC
8 Digital
4 Relays
230 Vx10 A
LOGO! 12/24RCo
12/24 V
DC
8 Digital*
4 Relays
230 Vx10 A
no display
24 V AC
8 Digital
4 Relays
230 Vx10 A
no display
4 Relays
230 Vx10 A
no display
LOGO! 24RCo
LOGO! 230RCo #
115...240 V
AC/DC
8 Digital
no clock
no keyboard
no keyboard
no keyboard
*: alternatively, 2 analog inputs (0...10V) and 2 fast inputs can be used.
#: 230 V AC variants: Inputs in two groups of 4. Within a group only the same phase,
between groups different phases are possible.
Expansion module
The LOGO! can be connected to the following expansion
modules:
Symbol
Designation
Supply voltage
Inputs
LOGO! DM 8 12/24
R
12/24 V DC
4 Digital
LOGO! DM 8 24
24 V DC
4 Digital
Outputs
4 Relays (3)
4 Transistors
(1)
LOGO! DM 8 230R
115...240 V AC/DC
4 Digital
LOGO! AM 2
12/24 V DC
2 Analog
0–10 V or
0–20 mA (2)
4 Relays (3)
none
(1): no different phases allowed within the inputs.
(2): 0–10 V, 0–20 mA connection is optional.
(3): The maximum sum switching power across all four relays is 20 A.
8
LOGO! Manual
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Working with LOGO!
Certification, recognition and approval
LOGO! is certified according to UL, CSA and FM.
UL listing mark
Underwriters Laboratories (UL) to
UL 508 standard, file no. 116536
CSA–Certification–Mark
Canadian Standard Association (CSA) to
Standard C22.2 No. 142, File No. LR 48323
FM certification
Factory Mutual (FM) Approval to
Standard Class Number 3611,
– Class I, Division 2, Group A, B, C, D
– Class I, Zone 2, Group IIC
!
Warning
Personal injury and material damage may be
incurred.
In potentially explosive areas, personal injury or
property damage can result if you withdraw any
connectors while the system is in operation.
Always switch off the power supply for the
LOGO! and its components before you disconnect any connectors.
LOGO! carries CE marking, complies with VDE 0631 and
IEC 61131–2 standard and has interference suppression to
EN 55011 (limit class B, class A for ASi bus operation).
Shipbuilding certification has been requested.
ABS – American Bureau of Shipping
BV – Bureau Veritas
DNV – Det Norske Veritas
GL – Germanischer Lloyd
LRS – Lloyds Register of Shipping
PRS – Polski Rejestr Statków
LOGO! Manual
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9
Working with LOGO!
LOGO! can therefore be used both in industry and domestic areas.
C Tick Mark (Australia)
The products carrying the label shown at the side are compliant with AS/NZL 2064:1997 (Class A) standard
10
LOGO! Manual
A5E00119092-01
2 Installing and wiring the LOGO!
General Guidelines
When mounting and wiring your LOGO! you should observe the following guidelines:
When wiring the LOGO! ensure you are conforming with
current rules and standards. You should also heed any
national and regional regulations when installing and
operating the devices. Contact the relevant authorities
to find out the standards and regulations that apply in
your specific case.
Use wires with the appropriate cross–section for the
amount of current involved. LOGO! can be wired using
cables with a conductor cross–section of 1.5 mm2 and
2.5 mm2, refer to Chapter 2.3.
Don’t screw the connectors too tightly. Maximum torque:
0.5 N/m, refer to Chapter 2.3.
Keep wiring distances as short as possible. If longer
wires are necessary, a shielded cable should be used.
Arrange you wires in pairs: one neutral conductor with
one phase conductor or one signal line.
Keep separate:
– AC circuits
– High–voltage DC circuits with fast switching cycles
– Low voltage signal wiring.
Ensure that the wires have the required strain relief.
Provide suitable overvoltage protection for wires that
could be vulnerable to lightning.
LOGO! Manual
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11
Installing and wiring the LOGO!
Do not connect an external power supply to an output
load parallel to a DC output. This can result in reverse
current at the output unless you have a diode or a similar block in your configuration.
Note
LOGO! must always be mounted and wired by skilled personnel who are familiar and follow the general rules of the
technology and the respective current rules and standards.
12
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
2.1 Structure of the modular LOGO!
2.1.1 Maximum structure
Maximum structure LOGO! with analog inputs
(LOGO! 12/24 RC/RCo and LOGO! 24)
LOGO! Basic, 4 digital modules and 3 analog modules
I1......I6
AI1 , AI2 I9...I12
LOGO! Basic
I13...I16 I17...I20 I21...I24
LOGO! LOGO! LOGO! LOGO! LOGO! LOGO! LOGO!
DM8
DM8
DM8
DM8
AM2
AM2
AM2
AI3 , AI4 AI5 , AI6 AI7 , AI8
Tip
When using inputs I7 / AI1 and I8 / AI2 as analog inputs,
that is, AI1 and AI2, you should avoid to use them as digital
inputs I7/I8 also.
Maximum structure of LOGO! without analog inputs
(LOGO! 24 RC/RCo and LOGO! 230 RC/RCo)
LOGO! Basic, 4 digital modules and 4 analog modules
I1 . . . . . . . . . . . I8
I9...I12
I13...I16 I17...I20 I21...I24
LOGO! basic
LOGO! LOGO! LOGO! LOGO! LOGO! LOGO! LOGO! LOGO!
DM8
DM8
DM8
DM8
AM2
AM2
AM2
AM2
AI1 , AI2 AI3 , AI4 AI5 , AI6 AI7 , AI8
Fast/optimal communication
In order to achieve an optimal and fast communication between LOGO! Basic and the various modules, we recommend the structure “Digital modules first, then the analog
modules” (example above).
LOGO! Manual
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13
Installing and wiring the LOGO!
2.1.2 Structure with different voltage classes
Since the potential of the left analog module interface
(AM2, 12/24 V DC) is separated from the right one, you
can connect it to all LOGO! Basic versions.
The potential of expansion modules arranged to the right of
the analog module is separated from LOGO! Basic.
It is therefore possible to connect an expansion module of
a different voltage class as LOGO! Basic at the right side
of an analog module.
Example:
LOGO! 230...
LOGO! LOGO! LOGO! LOGO! LOGO! LOGO! LOGO!
DM8
AM2
DM8 24 AM2
DM8
AM2
DM8 24
230R
12/24 R
The potential of an analog module is separated
14
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
2.2 Installing/uninstalling LOGO!
Dimensions
LOGO!’s installation dimensions are compliant with
DIN 43880.
LOGO! can be snap–mounted on a 35 mm DIN EN 50022
profile rail or mounted on the wall.
Width of LOGO!:
LOGO! Basic has a width of 72 mm, corresponding to 4
unit segments.
The width of LOGO! expansion modules is 36 mm, corresponding to 2 unit segments.
Note
We shall illustrate mounting and removal in a graphic overview for a LOGO! 230 RC and a digital module. The
shown methods also apply for all other LOGO! basic variants and expansion modules.
!
Warning
LOGO! Manual
A5E00119092-01
Expansion modules must only be “Extracted” and
“Plugged” after power is switched off.
15
Installing and wiring the LOGO!
2.2.1 Profile rail mounting
Installing
This is how you mount a LOGO! basic and a digital module on a profile rail:
LOGO! basic:
1. Place the LOGO! basic onto the rail and
2. then swing it around on the rail. The mounting slide at
the rear must be engaged
6
1
3
5
2
4
LOGO! digital module:
3. At the right side of the LOGO! Basic/LOGO! expansion
module, remove the cover of the connector
4. Place the digital module to the right of the LOGO! basic
5. Slide the digital module towards the left up to the
LOGO! Basic
16
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
6. Using a screwdriver, slide the integrated to the left. In it
end position the slide engages in the LOGO! basic.
Repeat steps 3 to 6 is you want to install additional expansion modules.
Note
The expansion interface of the last expansion module
must be covered.
LOGO! Manual
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17
Installing and wiring the LOGO!
Uninstalling
To uninstall LOGO!, proceed as follows:
....... if only one LOGO! Basic is mounted: Part A
1. Insert a screwdriver into the hole shown at the lower
end of the mounting slide and push it downward
2. Swing the LOGO! basic off the profile rail.
1
2
2
4
1
18
3
A
B
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
....... in case there is at least one expansion module
connected to the LOGO! basic:
Part B
1. Using a screwdriver, push down the slide and slide it to
the right
2. Slide the expansion module towards the right and
3. Insert a screwdriver into the hole shown at the lower
end of the mounting slide and push it downward
4. Swing the expansion module off the profile rail.
Repeat steps 1 to 4 for all other expansion modules.
Note
If more than one expansion module is connected, start
with the last module at the right.
Make sure that the slide of the module to be installed/removed is not connected to the next module.
LOGO! Manual
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19
Installing and wiring the LOGO!
2.2.2 Wall–mounting
Before you wall–mount the device, the mounting slides at
the rear of the device must be pushed towards the outside
or the inside. Insert the upper mounting slide (included with
the modules) and push the lower one to the outside. You
can the fasten the LOGO! with two 4–mm screws (tightening torque 0.8 to 1.2 N/m) to the bracket to mount it on
the wall.
Mounting slides
20
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
Drilling template for wall–mounting
Before you mount the LOGO! to the wall you should prepare the drill holes with the help of this template.
53,5 +/–0,2
35,5 +/–0,2
98 +/–0,3
1
2
2
2
n x 35,5 +/–0,2
All dimensions in mm
Screw bore 4 mm
Tightening torque 0.8 to 1.2 N/m
1
LOGO! Basic
2 LOGO! Expansion module
LOGO! Manual
A5E00119092-01
21
Installing and wiring the LOGO!
2.3 Wiring the LOGO!
Wire the LOGO! using a screwdriver with a 3 mm blade.
You don’t need wire ferrules for the connectors. You can
use wires up to the following sizes:
1 x 2.5 mm2
2 x 1.5 mm2 for each second connector compartment
Connecting torque: 0.4...0.5 N/m or 3...4 LBin
Note
ensuring that the connectors are covered. To protect the
LOGO! adequately against contact to voltage carrying
parts, country specific standards must be conformed with.
2.3.1 Connecting the Power Supply
LOGO! The 230 V versions are suitable for nominal line
voltages oft 115 V AC/DC and 240 V AC/DC. LOGO! The
24 V and 12 V versions are suitable for a supply voltage of
24 V DC, 24 V AC or 12 V DC. Note the information on
connection in the product information document shipped
with your device and the technical specifications in Appendix A relating to permissible voltage tolerances, line frequency and current consumption.
Note
Power failure might result for instance in an additional
edge after power restoration with edge–triggered special
functions.
Data of the last uninterrupted cycle are stored in LOGO!.
22
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A5E00119092-01
Installing and wiring the LOGO!
Connecting
This is how you connect your LOGO! to the power supply:
LOGO! ..... with DC
supply voltage
L+
M
LOGO! ..... with AC
supply voltage
L1
N
L+
M
I1
I2
I3
I4
I5
Protection by fuse
if required (recommended) for:
12/24 RC...:
0.8 A
24:
2.0 A
L1
N
I1
I2
I3
I4
With voltage peaks, use a varistor
(MOV) with at least 20% higher operating voltage than nominal voltage.
Note
LOGO! has protective insulation. A ground terminal is not
necessary.
Protective circuit with AC voltage
You can eliminate line voltage peaks with a metal oxide
varistor (MOV). Make sure the operating voltage of the varistor exceeds the rated voltage by at least 20% (e.g.
S10K275)
LOGO! Manual
A5E00119092-01
23
Installing and wiring the LOGO!
2.3.2 Connecting LOGO! inputs Connecting
Prerequisites
Connect sensors to the inputs. Sensors may be: pushbuttons, switches, photoelectric barriers, daylight control
switches etc.
Sensor attributes for LOGO!
LOGO! 12/24 RC/RCo
LOGO! DM8 12/24 R
I1 ... I6
I7, I8
LOGO! 24
LOGO! DM8 24
I1 ... I6
I7, I8
Circuit state 0
< 5 V DC
< 5 V DC
< 5 V DC
< 5 V DC
Input current
< 1.0 mA
< 0.05 mA
< 1.0 mA
< 0.05 mA
Circuit state 1
>8 V DC
>8 V DC
>8 V DC
>8 V DC
Input current
> 1.5 mA
> 0.1 mA
> 1.5 mA
> 0.1 mA
LOGO! 24
RC/RCo (AC)
LOGO! 230
RC/RCo (AC)
LOGO! DM8
230 R (AC)
LOGO! 230
RC/RCo (DC)
LOGO! DM8
230 R (DC)
Circuit state 0
< 5 V AC
< 40 V AC
< 30 V DC
Input current
< 1.0 mA
< 0.03 mA
< 0.03 mA
Circuit state 1
> 12 V AC
> 79 V AC
> 79 V DC
Input current
> 2.5 mA
> 0.08 mA
> 0.08 mA
24
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
Note
The digital inputs of the LOGO! 230 RC/RCo are divided
into two groups equipped with 4 inputs each. Within a
group all inputs must be operated on the same phase. Different phases are only possible between the groups.
Example: I1 to I4 on phase L1, I5 to I8 on phase L2.
Within the input circuit of the LOGO! DM8 230R you must
not connect different phases.
Sensor connections
Connecting glow lamps, 2–wire Bero to the LOGO! 230
RC/230 RCo or LOGO! DM8 230 R (AC)
L1
N
Order number for C:
C
L1
N
Siemens
Switching Devices & Systems
3SB1430–3C
3SB1420–3D
3TX7462–3T
Restrictions
– Circuit status transition 0 1 / 1 0
When the circuit state changes from 0 to 1, circuit state 1
and, in the case of a change from 1 to 0, circuit state 0
must be in place for at least one program cycle for LOGO!
to recognize the new circuit status.
The cycle time of the program processing depends on the
size of the program. In Chapter 3.7 you can find a description of a short test program that will help you to work out
the current cycle time.
LOGO! Manual
A5E00119092-01
25
Installing and wiring the LOGO!
Special features of LOGO! 12/24 RC/RCo and LOGO! 24
Fast inputs: I5 and I6
These versions are also equipped with inputs for frequency
functions. The same restrictions do not apply to these fast
inputs.
Note
There are no changes in the standard version compared to
previous Basic devices (0BA0 to 0BA2): I5 and I6 are still
the fast inputs, that is, no changes are necessary to transfer the program written in these versions to the new 0BA3
devices. In contrast, programs written in a LOGO!...L version (fast inputs I11/I12) must be changed.
Expansion modules do not have fast inputs.
Analog inputs: I7 and I8
With the LOGO! 12/24 RC/RCo and LOGO! 24 versions
the inputs I7 and I8 can be used as normal digital inputs or
as analog inputs. How the input is used depends on its purpose in the LOGO! control program.
You can use the digital capability of the input with I7/I8 and
its analog capability with the identifiers AI1 and AI2.
See also Section 4.1.
Note
The expansion module LOGO! AM2 is available for additional inputs.
For the analog signals you must always use twisted and
shielded cables as short as possible.
26
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
Sensor connections
This is how to connect sensors to the LOGO! :
LOGO! 12/24 ....
The inputs of these devices are
non–isolated and therefore require
the same reference potential
(ground) as the power supply.
L+
M
L+ M
I1 I2
I3 I4
I5
With the LOGO! 12/24 RC/RCo and
LOGO! 24 you can tap the analog
signal between the supply voltage
and ground.
I8
LOGO! 230 ....
L3
L2
L1
The inputs of these devices are arranged in 2
groups with 4 inputs each.
Different phases are only
possible between, but not
within the blocks.
N
L1 N
!
I1
I2
I3
I4
I5
I6
Warning
LOGO! Manual
A5E00119092-01
Current safety regulations (VDE 0110, ... and
IEC 61131–2, ... as well as UL and CSA) do not
permit the connection of different phases to one
input group (I1–I4 or I5–I8) of an AC version or
on the inputs of one digital module.
27
Installing and wiring the LOGO!
LOGO! AM2
L+
M
PE
L+ M
L+ M
Grounding terminal
for connecting
ground and shielding
of the analog measuring line
1 Ground
2 Cable shielding
3
3 Profile rail
RUN/STOP
1
PE
M
L+
I1 M1 U1 I2 M2 U2
2
Current
0–20 mA
Measuring
current
M
Current measurement
28
Voltage measurement
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
2.3.3 LOGO! Outputs connecting
LOGO! ...R...
The LOGO! outputs ...R... are relays. The relay contacts
are isolated from the power supply and from the inputs.
Prerequisites for Relay outputs
You can connect different loads to the outputs such as
lamps, fluorescent tubes, motors, contactors etc. The loads
connected to LOGO! ...R... must have the following properties:
The maximum switched current depends on the type of
load and the number of switching cycles (For details
refer to Chapter A “Technical Data” ).
LOGO! Basic...R..: in switched on state (Q = 1) and
with ohmic load the maximum current is 10 A and for
inductive loads the maximum is 3 A (2 A at 12/24 V AC/
DC).
LOGO! DM8....R properties are identical to LOGO! Basic...R, with the following restrictions: The maximum
sum switching power across all four relays is 20 A.
Connecting
This is how to connect the load to the LOGO! ...R... an:
DM8...R
1 Q5 2 1 Q6 2
1
Q1
2
1
Load
Q2
2
Load
Protection with automatic circuit breaker (max. 16 A, B16, e.g. power
circuit breaker 5SX2 116-6 (if desired)
LOGO! Manual
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29
Installing and wiring the LOGO!
LOGO! with transistor outputs
LOGO! variants with transistor outputs can be identified by
the fact that the letter R is missing from their type designation. The outputs are short circuit–proof and overload–
proof. An auxiliary load voltage supply is not necessary
since LOGO! supplies the load voltage.
Prerequisites for transistor outputs
The load connected to LOGO! must have the following
properties:
The maximum switched current is 0.3 amperes per output.
Connecting
This is how to connect the load to a LOGO! with transistor
outputs:
DM8...24
Q5 M
Q1 M
Q6 M
Q2 M
Load
Load
Load: 24 V DC, 0.3 A max.
30
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
2.4 Switching on the LOGO!/Power return
LOGO! does not have a power switch. The reaction of
LOGO! when switched on depends
whether a program is stored LOGO! in LOGO!,
whether a program module is connected,
Whether it is a LOGO! version without display
(LOGO!...RCo),
in which state LOGO! was prior to POWER–OFF and
whether a PC cord was connected.
The LOGO! reaction to all possible situations is described
on the following page:
LOGO! Manual
A5E00119092-01
31
Installing and wiring the LOGO!
Before power off
After power on
or
No Program
Press ESC
(empty)
No program
in memory
(with program)
Mo 09:00
06.21.01
I : 0. , 1. , 2.
or
123456789
0123456789
01234 Q : 0. , 1.
123456789
0123456
(with program)
B01
or
Q1
Program in
memory
B01
No program
in memory
32
or
123456789
0123456789
01234
Mo 09:00
06.21.01
I : 0. , 1. , 2.
123456789
0123456789
01234
With stored
program
from LOGO!
......
&
Q1
and
PC cord
with program
copied from
the module to
...... LOGO!
the
>Program..
PC/Card..
Clock..
Start
With stored
program from
LOGO!
>Program..
PC/Card..
Clock..
Start
with program
copied from
the module to
the LOGO!
(empty)
(with program)
No Program
Press ESC
Mo 09:00
I06.21.01
: 0. , 1. , 2.
LOGO! in
RUN state
Cnt = 0028
&
>Program..
PC/Card..
Clock..
Start
(empty)
B03:Par
Par = 0300
LOGO! in
RUN state
No Program
Press ESC
PC
= LOGO!
Stop?
Press ESC
Program in
memory
LOGO! Manual
A5E00119092-01
Installing and wiring the LOGO!
You can also try to remember the 4 simple rules for starting
LOGO! Basic:
1. If there is no program in LOGO! or in the connected
program modules, LOGO! (with display) reports: ’No
Program Press ESC’.
2. If there is a program on the program module, it is automatically copied to LOGO! . A program in LOGO! is
overwritten.
3. If there is a program in LOGO! or in the connected program module, LOGO! takes over the operate state it
had prior to POWER–OFF. The version without display
(LOGO! ...RCo) is switched automatically from STOP to
RUN mode (LED toggles from red to green).
4. If at least on function is switched retentive or if you have
used a function that is permanently retentive the current
values are also retentive at POWER–OFF.
Note
If a power loss occurs while you are entering a program,
the program in LOGO! is deleted after power is returned.
You should therefore save your original program before
changing it on a program module (card) or on a computer
(LOGO!Soft Comfort).
LOGO! Manual
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33
Installing and wiring the LOGO!
LOGO! Basic operating states
LOGO! Basic knows tow operate states: STOP and RUN
STOP
RUN
Display: ’No Program’ (not
LOGO! ...RCo)
Display: screen form for
monitoring I/O and messages (after START in the
main menu)
(not LOGO! ...RCo)
LOGO! to programming
mode
(not LOGO! ...RCo)
LOGO! to programming
The LED lights up red
mode
(not LOGO! ...RCo)
(only LOGO! ...RCo)
The LED lights up green
(LOGO! ...RCo)
Action by LOGO!:
Action by LOGO!:
The inputs are not read.
The program is not exe-
LOGO! reads the state of
cuted.
The relay contacts are always open or the transistor
outputs are switched off
the inputs
LOGO! calculates the state
of the outputs with the program.
LOGO! switches the relays/
transistor outputs on or off
LOGO! Expansion modules, operating state
LOGO! expansion modules know three operating states:
the LED is lit green, red or orange.
LED is lit
green (RUN)
The expansion
module communicates with the left
device
34
red (STOP)
The expansion
module does not
communicate with
the left device
orange
Initialization phase
of the expansion
module
LOGO! Manual
A5E00119092-01
3 Programming LOGO!
Your first steps with LOGO!
The term programming refers to the input of a circuit program. A LOGO! program is actually no more than a circuit
diagram presented in a slightly different form!
We have adapted this presentation to the LOGO! display.
In this chapter we are going to show you how to transform
your applications into a LOGO! program.
Note
The LOGO! versions LOGO! 12/24 RCo, LOGO! 24 RCo
and LOGO! 230 RCo do not have a keyboard or a display
unit. They are mainly intended for series production applications in small machine and plant engineering.
LOGO!...RCo versions are not programmed locally.
Rather, programs in LOGO!Soft Comfort or in the memory
modules of other LOGO! units are transferred to this device.
In the first section of this chapter we shall use a small example to show you how to handle the LOGO! .
We shall begin by introducing two basic terms, namely
the connector and the block, and show you what they
represent.
In a second step, we shall work out a simple and common circuit program that you ...
can enter directly in LOGO! in the third step.
Only few manual pages later you are going to have your
first running program stored in the LOGO! . With a suitable
hardware (switches etc.) you will then be able to carry out
your first tests.
LOGO! Manual
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35
Programming LOGO!
3.1 Connectors
LOGO! has I/Os
Example of a configuration with several modules:
Inputs
L+ M I1 I2 I3 I4 I5 I6 AI1 AI2
L+ M I9 I10I11I12
L+ M
RUN/STOP
L+ M
L+ M I13I14I15I16
RUN/STOP
RUN/STOP
PE
1
1
Q1
2
1
Q2
2
1
Q3
2
1
Q4
2
1
Q5
Q7
Outputs
2
2
1
1
Q6
2
2
Q8
INPUT 2x (..10V/..20 mA)
1
Q9
2
A!3 M3U3AI4M4U4 1
Q11
2
1
2
Q10
1
2
Q12
Analog inputs
Each input is identified by the letter I and a number. When
you look at the LOGO! from the front, you can see the connectors for the inputs at the top. Only the analog module
LOGO! AM2 has its inputs at the bottom.
Each output is identified by the letter Q and a suffix. You
can see that the connectors of the outputs are located at
the bottom.
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Note
LOGO! can recognize, read and switch the I/O of all expansion slots, regardless of their type. The I/O is shown in
the order of the module arrangement.
The following I/Os and memory bits are available for programming: I1 to I24, AI1 to AI8, Q1 to Q16 and M1 to M8.
For the LOGO! 12/24... and LOGO! 24 inputs I7 and I8
applies: if Ix is used in the program, the input signal is interpreted as digital signal; with AIx it is an analog signal.
Input AIx can only be the connector that is actually capable of carrying an analog signal.
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Programming LOGO!
LOGO!’s connectors
The term connector refers to all connections and states in
LOGO! .
The I/O status can be ’0’ or ’1’. Status ’0’ means that the
input does not carry a voltage. Status ’1’ means that the
input carries voltage. But that, we assume, is nothing new
to you.
We have implemented the connectors hi, lo and x in order
to facilitate programming for you: the default fixed status of
’hi’ (high) is ’1’ and of ’lo’ (low) it is ’0’.
If you do not want to wire the input of a block, use the ’x’
connector. The meaning of the term block is explained on
the next page.
LOGO! knows the following connectors:
Connectors
Inputs
DM
LOGO! basic
LOGO! 230 RC/RCo
LOGO! 24 RC/RCo
Two groups:
I1... I4 and
I5 ... I8
LOGO! 12/24 RC/
RCo LOGO! 24
I1... I8 along
with I7(AI1),
I8(AI2)
Outputs
Q1...Q4
lo
Signal with ’0’ level (off)
hi
Signal with ’1’ level (on)
x
An existing connection that is not used
AM
I9 ... I24
AI1(AI3)
... AI8
Q5 ... Q16
none
DM: Digital module.
AM: Analog module.
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3.2 Blocks and Block Numbers
This chapter shows you how to use the LOGO! elements to
create extensive circuits and how the blocks and the I/O
are interconnected.
For this purpose, please turn to Section 3.3. There you are
going to learn how to convert a common circuit into a
LOGO! program.
Blocks
A block in LOGO! is a function that is used to convert input
information into output information. Previously you had to
wire up the individual elements in the control cabinet or
terminal box.
When you program LOGO!, you connect connectors with
blocks. To do this, simply select the connection you require
from the Co menu We have used the abbreviation Co for
the English term ”Connector” to name the menu.
Logic operations
The most elementary blocks are logical links:
AND
OR
...
I1
I2
x
1
Q
Inputs I1 and I2 are connected to the
OR block. The last input of the block
is not used and is therefore marked
with an x.
The special functions are far more powerful:
Pulse relay
Counter
On delay
Softkey
....
Chapter 4 provides a complete list of LOGO!’s functions.
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Programming LOGO!
Displaying a block in LOGO!
The figure below shows a typical LOGO! display. Only one
block can be displayed at a time. We have therefore
introduced block numbers to help you check the circuit
structure.
Display view of LOGO!
Block number –
assigned by
LOGO!
Here is another
block connected
B01
1
Input
B02
I2
x
Q1
This connection is not required
Output
Block
Assigning a block number
When you insert a block in a program, LOGO! always assigns it a block number.
LOGO! uses the block numbers to show you the block interconnections. Primarily, the block numbers are meant to
help you find your way around the program.
Block numbers
B02
I1
I2
I3
1
These blocks are
interconnected
B01
B03
I4
I5
I6
B01
1
1
B01
B02
B03
x
Q1
B01 Q1
Moving around the program using the key
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The overview shows you three displays of LOGO!, which
together form the program. You can see how LOGO! interconnects the blocks, using the block numbers.
Advantages of the block numbers
You can append almost any block to an input of the current
block using its block number. In this way you can reuse the
interim results of logical links or other operations. This
saves you input work and memory space, and ensures a
clear arrangement of your circuit. In this case, you must
know how LOGO! has named the blocks.
Note
For efficient working, we recommend that you create
block diagram of the program. This is going to make programming easier for you, because here you can enter the
block numbers assigned by LOGO!.
If you program the LOGO! using the LOGO!Soft Comfort
software, you can directly create a logic diagram of your
program.
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Programming LOGO!
3.3 The way from the Circuit Diagram to
LOGO!
How a circuit is represented in a circuit diagram
You know, of course, how a circuit is represented in a circuit diagram. Nevertheless, here is an example:
S1
S2
The load E1 is switched
on and off by means of
the switches (S1 OR
S2) AND S3.
The relay K1 picks up if
S1 OR S2 AND S3 are
closed.
K1
S3
K1
E1
Realizing this circuit with LOGO!
In LOGO! you construct a circuit by interconnecting blocks
and connectors:
L1
Wiring of the inputs
S1 ... S3
Program in LOGO!
I1
I2
x
N
1
I3
&
Q1
x
Wiring of the outputs
To convert a circuit in LOGO!, start at the output of the circuit.
The output is the load or the relay that is to be switched.
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Convert the circuit to blocks. To do this, go through the circuit from the output to the input:
Step 1: At output Q1 there is a series connection of the
normally open contact S3 with another circuit component.
The series connection corresponds to an AND block:
&
I3
Q1
x
Step 2: S1 and S2 are connected in parallel. The parallel
circuit corresponds to an OR block:
I1
I2
x
1
I3
&
Q1
x
You have now completely described the circuit for the
LOGO! . Now connect the I/Os to the LOGO! .
Wiring
Connect the switches S1 to S3 to the screw terminals of
the LOGO! :
Connect S1 to connector I1 on the LOGO!
Connect S2 to connector I2 of the LOGO!
Connect S3 to connector I3 of the LOGO!
Since only two inputs of the OR blocks are being used, the
third input of this block must be marked as “unused”. This
is indicated using the suffix x.
Likewise, only 2 inputs of the AND block are used. Thus,
the third input is also marked as ’unused’ by the suffix x.
The output of the AND block controls the relay of output
Q1. The load E1 is connected to output Q1.
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Wiring example
The following table shows you the wiring based on a 230 V
AC version of LOGO!.
L1
N
S1 S2 S3
L1
1
N
Q1
I1
I2
I3
Wiring of the inputs
I4
2
Output wiring
L1
Last
N
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3.4 The 4 Golden Rules for Working with
LOGO!
Rule 1
Changing operating mode
Edit the circuit in programming mode. After Power On
and if “No Program, Press ESC” is displayed, you can
open the programming mode by pressing the ESC key.
You can edit the time and parameter values of an existing program in the parameter assignment mode and
in programming mode .
Start RUN mode by executing ’Start’ in the main menu.
In RUN mode you can return to parameter assignment mode via ESC key.
If you want to return from parameter assignment
mode to programming mode, execute the “Stop”
command in the parameter assignment menu. When
prompted to confirm with “Yes” when “Stop Prg” appears, move the cursor to “Yes” and confirm with OK.
You can find more information on operating modes in the
Chapter LOGO! Menu Structure Page 231.
Rule 2
Outputs and inputs
Always program a circuit working from the output towards the input.
You can connect an output to several inputs, however,
you cannot fan out one input to several outputs.
You cannot connect an output to a preceding input in
the same program path. For such internal recursions
you should interconnect memory bits or outputs.
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Programming LOGO!
Rule 3
Cursor and cursor movement
When programming a circuit, note:
When the cursor appears in the form of an underscore,
you can move the cursor:
– Use the , , or key to move the cursor in the
circuit
– Press OK to change to ”Select terminal/block”
– Press ESC to exit circuit programming.
When the cursor appears as solid square, you should
select a connector/block
– Use the or key to select a connector/block.
– Confirm your selection with OK.
– Press ESC to go back one step.
Rule 4
Planning
Make a complete plan of your circuit on paper before
you input the circuit or program LOGO! directly using
LOGO!Soft or LOGO!Soft Comfort.
LOGO! can only save complete programs. If the circuit
program is incomplete LOGO! cannot exit the programming mode.
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3.5 Overview of the LOGO! Menus
Programming mode
Main menu
>Program..
PC/Card..
Clock..
Start
Programming menu
OK
ESC
OK
>Edit Prg
Prg Name
Clear Prg
Password
Transfer menu
ESC
= LOGO!
>PC
Card
Card
OK
ESC
Menu Clock
>Set Clock
S/W Time
Parameter assignment mode
Parameter assignment menu
>Stop
Set Param
Set Clock
Prg Name
You can find more information on menus in the Chapter
LOGO! Menu Structure Page 231.
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3.6 Program Input and Start
You have designed a circuit and now want to enter it in
LOGO! . A small example will show how to do this.
3.6.1 Change to Programming mode
You have connected the LOGO! to the power supply and
voltage is switched on. The display shows you the message:
No Program
Press ESC
Switch the LOGO! to programming mode by pressing the
ESC key. This will take you to the main menu of the
LOGO!:
>Program..
PC/Card..
Clock..
Start
LOGO!’s main menu
The first character in the first row is ”>”. Use the keys
and to move the ”>” up and down. Move the ”>” to ”Program..” and confirm with OK. LOGO! opens the programming menu.
>Edit Prg
Prg Name
Clear Prg
Password
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LOGO!’s programming menu
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Here too, you can move the ”>” by pressing the and
keys. Move the ”>” to ”Edit Prg” (edit program, that is, input) and confirm with OK. LOGO! no shows you the first
output:
LOGO!’s first output
Q1
You are now in programming mode. Use the keys and
keys to select the other outputs. At this point you can start
programming your circuit.
Note
Since our program has not yet been saved with a password in LOGO! you can start editing your program right
away. If you start a program already saved with password
protection, “Edit Prg“ and confirmation with OK would be
followed by the prompt to enter a password. In this case
you cannot start editing unless you enter the correct password. (refer to Chapter 3.6.5.)
3.6.2 First Program
Let us now take a look at the following parallel circuit consisting of two switches.
Circuit diagram
How the circuit is represented in a circuit diagram
S1
S2
K1
K1
The load is switched on via
switch S1 OR S2. LOGO! interprets the circuit as ’OR’,
because either switch S1 OR
S2 switches the output.
E1
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Translated in the LOGO! program this means: relay K1 (in
LOGO! via output Q1) is controlled by an OR block.
Program
I1 and I2 are connected to the input of the OR block,
whereby S1 is connected to I1 and S2 to I2.
This is what the LOGO! program then looks like:
I1
1
I2
Q1
x
Wiring
The corresponding wiring:
L1
S1
N
S2
L1
1
Q1
N
I1
2
I2
I1
1
I3
Q2
2
I4
I5
1
Q3
2
I6
I7
1
I8
Q4
2
L
N
Switch S1 acts on input I1, switch S2 on input I2. The load
is connected to relay Q1.
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3.6.3 Editing a Program
Let us now edit the program (working from the output to the
input). Initially, LOGO! displays the output:
LOGO!’s first output
Q1
The Q of Q1 is underscored. This underscore is called the
cursor. The cursor indicates your current position in the
program. You can move the cursor by pressing the , ,
and keys. Now press the key. The cursor moves to the
left.
The cursor indicates your position in
the program.
–
Q1
At this point, enter only the first block (the OR block). Press
OK to switch to editing mode.
The cursor is displayed as a solid
square: You can now select a terminal
or a block
Co
Q1
The cursor no longer appears in the form of an underscore;
but rather as a flashing solid square. At the same time
LOGO! gives you various options.
Select the BF (basic functions) by pressing the key until
BF appears. Confirm with OK. LOGO! then displays the
first block in the list of basic functions:
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B01
&
Q1
Now press the
or
An AND is the first block in the list of
basic functions. The cursor is displayed as solid square, thus prompting
you to select a block.
key until the OR block is displayed:
B01
1
The cursor square is still positioned in
the block.
Q1
Press OK to confirm your selection.
The is what you see in the display
B01
–
1
Q1
Block
number
Your entire program looks
like this
B01
1
Q1
You have now entered the first block. Each block you enter
is assigned a block number. What is now left to do is to
wire the inputs of the block. This is how it is done:
Press OK.
The is what you see in the display
B01
Co 1
52
Q1
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Select the Co list: Confirm with OK
The is what you see in the display
B01
x
1
Q1
The first element in the Co list is the ”Input not used” character, an ’x’. Use the keys
or to select input I1.
Note
Use the key to go to the start of the Co list: I1, I2 .... to
lo, and again ’x’. Use the key to start at the end of the
Co list: lo, hi, Q ..... to I1, and once again ’x’.
B01
I1 1
Q1
Press OK. I1 is now connected to the input of the OR
block. The cursor jumps to the next input of the OR block.
The is what you see in the display
B01
I1
–
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Q1
Up to this point, your program
in LOGO! looks like this
B01
I1
1
Q1
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Programming LOGO!
Now connect input I2 to the input of the OR block. You already know how to do this:
1. Switch to editing mode: OK
2. Select the Co list:
per or
3. Accept the Co list:
OK
4. Select I2:
per or
5. Accept I2:
OK
I2 is now connected to the input of the OR block:
The is what you see in the display
Up to this point, your program
in LOGO! looks like this
B01
I1
I2
1
Q1
B01
I1
1
Q1
I2
We do not need the last input of the OR block for this program. In a LOGO! program the unused inputs are identified
with an ”x”. Now enter the ’x’:
1. Switch to editing mode: OK
2. Select the Co list:
per or
3. Accept the Co list:
OK
4. Select x:
per or
5. Accept x:
OK
Now all the inputs of the block are now wired. LOGO! considers the program as being complete LOGO! jumps back
to output Q1.
The is what you see in the display
Your program looks like this
B01
B01
Q1
I1
I2
x
1
Q1
If you want to review your first program, you can use the
or key to move the cursor through the program.
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But we are going to exit program input now. This is how it
is done:
1. Return to the programming menu:
ESC
If this does not return you to the programming menu, you
have not wired a block completely. LOGO! indicates positions at which you have missed something (LOGO! accepts
only complete programs, for the sake of your safety.). Also
refer to page 71.
Note
LOGO! has now saved your program retentive on power
failure. The program is only stored in the LOGO! until you
delete it per instruction.
3.6.4 Assigning a Program Name
You can assign a name to your program. This name consists of upper/lower case letters, numbers and special
characters. The maximum length is 16 characters.
2. move “>” to ’Prg Name’: per or
3. Accept ’Prg Name’:
OK
Use the keys and you can list the alphabet from A(a)
to Z(z), numbers and special characters. You can also list
them forward and backward. Here you can select any letter, number or character.
Input an empty by moving the cursor with to the next
position. This is the first character of the list.
Examples:
Press once: the result is an “ A ”
Press four times: the result is a left bracket “ { ”etc.
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Programming LOGO!
This character set is available:
a
b
C
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
0
1
2
3
4
5
6
7
8
9
!
”
#
$
%
&
’
(
)
*
+
,
–
.
/
:
;
<
=
>
?
@ [
\
]
^
_
‘
{
|
}
~
Let us assume you want to name your program “ABC”:
4. Select “ A”:
Press
5. To the next letter:
Press
6. Select “ B”:
Press
7. To the next letter:
Press
8. Select “ C”:
Press
9. Confirm the complete name: OK
Your program is now named “ABC” and you have been
returned to the programming menu.
The program name can be changed in the same way as
above.
Note
The program name can only be changed in programming
mode. You can read the program name in programming
mode and in parameter assignment mode .
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3.6.5 Password
You can assign a password in to protect it from being
edited by unauthorized persons.
How to assign a password
The maximum password length is 10 characters. It consists
of uppercase letters only (A to Z). On the device you can
only assign, edit and deactivate the password in the
“Password” menu.
In the programing menu:
1. move ’>’ to ’Password’: per or
2. Accept the ’Password’:
OK
Use the keys or
to move up and down the alphabet to
select your letters. Since LOGO! allows only uppercase
letters for the password, you can quickly access the letters
”at the end” of the alphabet faster by using the key :
Press once gives you a “Z”
Pressing twice gives you a “Y” etc.
Let us now assign the password “AA” to our first program.
The display shows:
Old:
No Password
New:
The procedure is the same as for entering the program
name. Under “New”, enter:
3. Select “ A”:
Press
4. To the next letter:
Press
5. Select “ A”:
Press
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The display now shows:
Old:
No Password
New:
6. Confirm the password: OK
Your program is now password protected with “AA” and
you have been returned to the programming menu.
Note
If the input of the new password is interrupted with ESC
LOGO! returns to the programming menu without saving
the password.
You can also input your password in LOGO!Soft Comfort.
You can only upload a password protected program in
LOGO!Soft Comfort or edit your program on the device
after you have entered the correct password.
Changing the Password
In order to change the password you must know the current one.
In the programming menu:
1. move ’>’ to ’Password’: per or
2. Accept the ’Password’:
OK
Under “Old”, enter your old password (in our case ’AA’) by
repeating steps 3 to 6 as described above.
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The display now shows:
Old:
AA
New:
Now you can enter a new password under “New”, e.g.
“ZZ”:
3. Select “Z”:
Press
4. To the next letter:
Press
5. Select “Z”:
Press
The display now shows:
Old:
AA
New:
ZZ
6. Confirm your new password: OK
“ZZ” is now your new password and you are back in the
programming menu.
Deactivating the Password
Let us assume you want to deactivate the password for
whichever reason. For example, you want to grant another
user read/write access to your program. Same as when
changing it, you must know your current password (in our
example “ZZ”).
In the programming menu:
1. move ’>’ to ’Password’:
per or
2. Accept the ’Password’:
OK
Under “Old” you must now enter your current password as
described in steps 3 to 5. Confirm your entry with OK.
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The display shows:
Old:
ZZ
New:
Now deactivate the password without making another
entry :
3. Confirm the “empty” password: OK
The password does not exist anymore. You have been returned to the programming menu.
Note
This deactivation switches off the password prompt. Editing is possible without entering a password.
For the moment, leave the password prompt deactivated
in order to speed up our progress with the remaining tutorials/examples.
Password: Wrong input !
When you enter the wrong password and confirm your
entry with OK, LOGO! does not open editing mode, but
rather returns to the programming menu. This repeats itself
over and over until you have entered the correct password.
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3.6.6 LOGO! to RUN mode
LOGO! to RUN mode in the main menu.
1. Return to the main menu:
ESC
2. move ’>’ to ’Start’:
per or
3. Confirm ’Start’:
OK
LOGO! starts the program and displays:
Display field of the LOGO! in RUN mode
Press
Mo 09:00
06.21.01
Press
Date and current
time–of–day
(only applies to versions with clock)
I:0.,1.,2.
123456789
0123456789
01234
Press
Q:0.,1.
123456789
0123456
Press
Status of the inputs
Status of the outputs
Date and TOD on the display
This display flashes as long as date and TOD are not set.
Presentation of the inputs on the display
I:0.,1.,2.
123456789
0123456789
01234
Inputs I1 to I9
Inputs I10 to I19
Inputs I20 to I24
Presentation of the outputs on the display
Q:0.,1.
123456789
0123456
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Outputs Q1 to Q9
Outputs Q10 to Q16
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Programming LOGO!
What does ”LOGO! is in RUN” mean?
In RUN mode LOGO! processes the program. To do this,
LOGO! initially reads the status of the inputs, determines
the status of the outputs using your specified program and
switches the outputs on or off.
The LOGO! presents the I/O status in this way:
Input/output has the state ’1’:
inverse
Input/output has the state
’0’: not inverse
I:0.,1.,2.
123456789
0123456789
01234
Q:0.,1.
123456789
0123456
In this example, only the inputs I1, I15, Q8 and Q12 are “high“.
Status display
L1
Let us examine
this, using our
example:
S1
=1
I1
S2
I2
I:0.,1.,2.
123456789
0123456789
01234
Q:0.,1.
123456789
0123456
Q1
When switch S1 is closed,
voltage is applied to input I1,
which has the state ’1’.
LOGO! uses the program to
calculate the output states.
Output Q1 has the state ’1’
here.
If the status of Q1 is ’1’
LOGO! switches the relay
Q1; the load on Q1 is supplied with voltage.
N
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3.6.7 Your Second Program
Now that you have successfully programmed your first circuit ( plus the program name and, if desired, assigned a
password), We shall commence by showing in this section
how you can modify existing programs and use the special
functions.
In a second program you are shown how to:
Insert a block in an existing program.
Select a block for a special function.
Assign parameters.
Modification of circuits
In order to produce the second program, we are now going
to modify the first one slightly.
In the first step, let us examine the circuit diagram for the
second program:
L1
S1
You already know the first part of
the circuit. Switches S1 and S2 operate a relay. This relay switches on
the load E1. It should switch off the
load again on expiration of a
12–minute off delay.
K1
S2
E1
K1
N
In LOGO! :
I1
I2
x
1
This is the
new block
x
T
Q1
You will recognize the OR block and the output relay Q1
from or first program. Only the off delay is new.
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Programming LOGO!
How to edit the program
Switch the LOGO! to programming mode
As a reminder, this is how it was done:
1. Switch the LOGO! to programming mode
(In RUN mode: press ESC. This opens the parameter
assignment menu
Select ’Stop’ : confirm with OK, move ’>’ to ’Yes’ and
confirm once again with OK). See page 45
2. In the main menu, select ”Program..”
3. In the programming menu, select ”Edit Prg”
(If required, enter the password and confirm with OK)
You can now modify the existing program.
How to insert a new block in a program
Move the cursor underneath the B in B01 (B01 is the block
number of the OR):
Move the cursor:
press the
key
B01
Q1
We now insert the new block at this position. Press OK.
LOGO! shows you the BN list.
BN
Q1
Select the SF list ( key):
The SF list contains the blocks
for the special functions.
SF
Q1
Confirm with OK.
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The block of the first special function is displayed:
Trg
T
Q1
When you select a special or basic function
block, LOGO! displays the respective function
block. The full square cursor is positioned in
the block. Use the keys or to select the
required block.
Select the block (off delay, see next diagram) and confirm
with OK:
’OK’ is here
preceded with
Trg
B01
R
T
B02
Q1
The inserted block is assigned the block
number B02. Block B01, up to now connected to Q1, is automatically connected to
the upper input of the new block. The cursor
is positioned at the upper input of the new
block.
The off–delay block has three inputs. The upper input is the
trigger input (Trg). Use this input to start the off delay. In
our example, the off delay is started via the OR block B01.
Reset the time and outputs, using the reset input. In the T
parameter, set off delay time.
In our example, we do not use the reset input of the off
delay. We wire it with ’x’. In the first program you have
seen how this is done. As a reminder to you:
1. Position the cursor under the R:per or
2. change over to editing mode: OK
3. Select the Co list:
per or
4. Accept the Co list:
OK
5. Select x:
per or
6. Accept x:
OK
B02
B01
x
T
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The display should now look like this:
Q1
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Programming LOGO!
How to assign block parameters
Now, specify the off delay time T:
1. If the cursor is not yet positioned underneath the T,
move it there:
per or
2. change over to editing mode: OK
For the parameters LOGO! displays the parameter assignment screen form:
B02:T
T=00.00s+
Time value
B02: The T parameter of
block B02: is a time
+ means: the parameter is
displayed and can be edited
in parameter assignment
mode
Time unit
The cursor is positioned on the first digit of the time value.
This is how you change the time value:
Use the keys and to move the cursor to and fro.
Use the keys and to change the value.
Confirm the time value you have entered with OK.
Setting the time
Set the time T = 12:00 minutes:
1. Move the cursor to the first digit:
per
2. Select the digit ’1’:
per
3. Shift the cursor to the second digit:
per
4. Select the digit ’2’:
per
5. Move the cursor onto the unit:
per
6. Select the m unit for minutes: per
66
or
or
or
or
or
or
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Displaying/hiding parameters – type of protection
If you do not want to have the parameter displayed in parameter assignment mode:
1. Move the cursor onto the type of protection:
per or
2. Select the type of protection ’–’:
per or
On the display you should now see:
B02:T
T=12:00m+
Type of protection +:
The time T can be
changed in parameter
assignment mode
or
B02:T
T = 12:00m
Type of protection – :
The time T cannot be
changed in parameter
assignment mode
3. Close and confirm your entries with
OK
Note
You can only change the type of protection and the time
unit in programming mode, that is, you cannot do this in
parameter assignment mode.
Checking the program
This program path for Q1 is now complete. LOGO! shows
you the output Q1. You can review the program on the display. Use the keys to browse through the program, e.g.
or to move from block to block and to move between
the inputs on a block.
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Programming LOGO!
Exiting programming mode
You already know how to exit a program from our first program. As a reminder:
1. Return to the programming menu:
ESC
2. Return to the main menu:
ESC
3. Move ’>’ to ’Start’:
per or
4. Confirm ’Start’:
OK
LOGO! has now returned to RUN mode:
Th 09:30
06.21.01
68
You can use
or
for viewing and
monitoring the status of I/Os.
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3.6.8 Deleting a Block
Let us assume, in your program you want to delete block
B02 and connect B01 directly to Q.
B01
B02
I1
I2
x
x
T
Q1
Proceed as follows:
1. Switch the LOGO! to programming mode
(as a reminder, refer to page 45).
2. Select ’Edit Prg’:
per or
3. Confirm ’Edit Prg’:
OK
(If required, enter the password and
confirm with OK)
4. Position the cursor on the input of Q1, that is, underneath B02. Use the :
B02
Q1
5.
6. Confirm with OK.
7. Now, replace the block B02 with block B01 directly on
output Q1. How to do this:
– Select the BN list:
per or
– Accept the BN list:
OK
– Select ’B01’:
per or
– Accept ’B01’:
OK
Result: Block B02 is deleted because it is not used in the
circuit. Block B01 is now connected directly to the output
instead of B02.
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3.6.9 Deleting Multiple Interconnected Blocks
In the following program, (corresponds with the program in
Chapter 3.6.7) let us assume you want to delete the blocks
B01 and B02.
B01
B02
I1
I2
x
x
T
Q1
Proceed as follows:
1. Switch the LOGO! to programming mode
(as a reminder, refer to page 45).
2. Select ’Edit Prg’:
per or
3. Confirm ’Edit Prg’:
with OK
(if required, enter the password and
confirm with OK)
4. Position the cursor on the input of Q1, that is, underneath B02. Use the :
B02
Q1
5. Confirm with OK.
6. Now, replace block B02 with the connector x on output
Q1. How to do this:
– Select the Co list:
per or
– Accept the Co list:
OK
– Select x:
per or
– Accept x:
OK
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Result: Block B02 is deleted because it is not used in the
circuit. All blocks connected to B02 are deleted (e.g. in our
example block B01).
3.6.10 Correcting Typing Errors
Programming errors can be corrected easily in LOGO! :
Provided editing mode is not yet closed, you can revert
by one step via ESC.
If you have configured all inputs, just enter the wrong
input once again:
1. Move the cursor to the location of the error.
2. Change to editing mode. Confirm with OK
3. Enter the correct input circuit.
You can only replace one block with another if the new
block has exactly the same number of inputs as the old
one. However, you can delete the old block and insert a
new one. You can choose any new block.
3.6.11 ”?” on the Display
If you have entered a program and want to exit “Edit Prg”
with ESC, LOGO! checks whether you have connected the
inputs of all blocks. If you have missed out on an input or
parameter LOGO! leads you to the respective position. It
indicates the first faulty position and marks all inputs which
are not connected and the parameters with a question
mark.
In this position you have connected the input
You have not yet declared a
parameter value
B02
B01
R ?
T ?
Q1
Connect the input and enter a value for the parameter. You
can then close the editor via ESC key.
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3.6.12 Deleting a Program
This is how you delete a program:
1. Switch the LOGO! to programming mode
>Program..
PC/Card..
Clock..
Start
LOGO! displays the main menu
2. In the main menu, use or
gram..’– Confirm with OK
>Edit Prg
Prg Name
Clear Prg
Password
LOGO! opens the programming
menu.
3. Move ’>’ to ’Clear Prg’: per
4. Confirm ’Clear Prg’:
Clear Prg
>No
Yes
to move ’>’ to ’Pro-
or
OK
To prevent you from unintentionally deleting your program, we have implemented an additional prompt.
If you do not want to delete the program, leave the ’>’ on
’No’ and confirm with OK.
If you are sure that you want to delete the program saved
in the LOGO!,
5. move the ’>’ to ’Yes’:
per or
6. Confirm with OK. LOGO! deletes the program.
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3.6.13 Summertime/Wintertime Conversion
You can enable or disable automatic Summertime/Wintertime Conversion in programming mode under the menu
item “Clock”.
1. Switch the LOGO! to programming mode
2. You are now in the main menu and want to select the
menu item ’Clock’:
per or
3. Confirm ’Clock’:
OK
4. Move the ’>’ to ’S/W Time’:
per or
5. Confirm ’S/W Time’:
OK
LOGO! displays:
>On
Off
S/W Time
Off
The current setting of automatic Summertime/Wintertime
Conversion is shown in the bottom row. Factory default is
Off (’Off’: disabled).
Enabling Summertime/Wintertime Conversion
You now want to enable this conversion and specify or declare its parameter:
1. Move ’>’ to ’On’:
per or
2. Confirm ’On’:
OK
The display shows:
>EU
UK
US
..
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Description of what is displayed:
’EU’ represents the start and end of summertime in
Europe.
’UK’ represents the start and end of summertime in the
United Kingdom.
’US’ represents the start and end of summertime in the
United States.
. . : here you can specify any month, day and time difference.
The default program for EU, UK and US conversion are
found in the table below:
Time difference ∆
Start of summertime
End of summertime
EU
Last Sunday in March:
02:00––>03:00
Fourth Sunday in October: 03:00––>02:00
60 Min
UK
Last Sunday in March:
02:00––>03:00
Last Sunday in October: 03:00––>02:00
60 Min
US
First Sunday in April:
02:00––>03:00
Last Sunday in October: 03:00––>02:00
60 Min
..
Customizing the month Customizing the month Specified by the
and the day: 02:00––> and the day: 03:00––> user (minute ac02:00 + Time difference 03:00 + Time difference curacy)
Note
You can specify a time difference ∆ between 0 and 180
minutes.
Let us assume you want to enable European Summertime/
Wintertime Conversion:
3. Move ’>’ to ’EU’:
per or
4. Confirm ’EU’:
OK
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LOGO! displays:
>On
Off
S/W Time
On→EU
LOGO! indicates that European Summertime/Wintertime
Conversion is enabled.
How to customize parameters
If all parameters/conversions do not apply to your country,
you can customize them in the menu item ’. .’. How to do
this:
1. Confirm ’> On’ once again:
OK
2. Move ’>’ to ’. .’:
per or
3. Confirm menu item ’. .’ :
OK
The display shows:
Cursor / full square
MM.DD
+ : 0
01.01
– : 01.01
=000 min
Month (MM) and Day (DD)
Start of summertime
End of summertime
the desired time difference in minutes
Let us assume you want to configure the following parameters: start of summertime 31st of March, end of summertime 1st of November, time difference of 120 minutes.
This is how you can enter your data:
Use the keys and to move the cursor/full square to
and fro.
Use the keys and to change the values at the cursor position.
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Programming LOGO!
The display shows:
MM.DD
0
+ : 03.31
– : 11.01
=120 min
31. March
1. November
Time difference of 120 Min
Confirm all your entries with OK.
You have now customized your summertime/wintertime
conversion. LOGO! displays:
>On
Off
S/W Time
On→..
LOGO! indicates that summertime/wintertime conversion is
enabled and that the parameters were customized ( ’..’ ).
Note
To disable summertime/wintertime conversion, all you
have to do is to confirm ’Off’ with OK in this menu
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3.7 Memory Space and Size of a Circuit
Then size of a program (Circuit program in LOGO!, circuit
diagram) is limited by the available memory space
(memory requirement for the blocks).
Memory area
In LOGO! you can only utilize a specific number of blocks
in your program. Some blocks require extra memory for
their special functions.
The memory required for special functions can be split into
four memory areas.
Par: The area in which the LOGO! stores setpoint values, e.g. the limit values of a counter.
RAM: The area in which the LOGO! stores actual values, e.g. a counter value.
Timer: The area LOGO! utilizes for timer functions, e.g.
for on delays.
REM: The area in which the LOGO! stores retentive
actual values, e.g. the hours counter value. In blocks
with selective use of the retentivity function, this
memory area is only used if retentivity is switched on.
Resources available in LOGO!
A program in LOGO! can occupy the following maximum
resources:
Blocks
56
Par
48
RAM
27
Timer
16
REM
15
Bit
8
LOGO! monitors memory utilization. It restricts the functions offered in the function lists to those for which sufficient memory space is physically available.
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Programming LOGO!
Memory utilization
The table gives you an overview of the specific memory
requirements of the special functions:
Function block
78
Par
RAM
Timer
REM
Latching relay*
0
(1)
0
(1)
Pulse relay*
0
(1)
0
(1)
Wiping relay
1
1
1
0
Edge–triggered
wiping relay
1
1
1
0
On delay
1
1
1
0
Off delay
2
1
1
0
On/off delay
2
1
1
0
Retentive
on delay
2
1
1
0
Weekly timer switch
6
2
0
0
Yearly timer switch
2
0
0
0
Up/down counter*
2
(2)
0
(2)
Operating hours counter
2
0
0
4
Symmetric clock generator
1
1
1
0
Asynchronous pulse generator
3
1
1
0
Random generator
2
1
1
0
Frequency
trigger
3
3
1
0
Analog trigger
4
2
0
0
Analog comparator
3
4
0
0
Staircase lighting switch
1
1
1
0
Comfort switch
2
1
1
0
Message texts
1
0
0
0
Softkey
1
(1)
0
(1)
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* Depending whether or not the function is configured retentive, it occupies the following memory space:
Retentivity switched off: RAM area
Retentivity switched on: REM area
Utilization of memory space
If you are unable to add another block when editing a program, this is a clear indication that no more memory space
is available. LOGO! offers only the blocks for which it can
provide sufficient memory space. If a block from the list
cannot be added into the LOGO! program you cannot call
this list anymore.
If the memory space is fully utilized you must optimize your
circuit program or use a second LOGO! .
Determining the amount of memory required
When calculating the memory requirements of a circuit,
you must always take all memory areas into account.
Example:
Par RAM Timer REM
6
2
0
Par RAM Timer REM
0
0
B03
0
0
0
B02
B01
No 1
No 2
No 3
x
Q1
x
I2
B04
I1
T
B06
B05
I3
I4
x
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Programming LOGO!
The sample program contains:
Block
no.
Memory area
Function
Par
RAM
Timer
REM
Blocks
B01
OR
0
0
0
0
1
B02
AND
0
0
0
0
1
B03
Timer switch
6
2
0
0
1
B04
On delay
1
1
1
0
1
B05
Clock generator
1
1
1
0
1
B06
AND
0
0
0
0
1
Resources occupied by the
program
8
4
2
0
6
Memory limitations in LOGO!
48
27
16
15
56
in LOGO! still available
40
23
14
15
50
The program therefore fits into LOGO!.
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4 LOGO! Functions
Order
LOGO! provides various elements for the programming
mode. In order to avoid loosing the overview, we have distributed the elements in ’Lists’. These lists are:
Co: Connector list (Connector)
(see Chapter 4.1)
BF: List of basic functions AND, OR, ...
(refer to Chapter 4.2)
SF: List of special functions
(refer to Chapter 4.4)
BN: List of reusable blocks configured in the circuit
program
List Contents
All lists show the elements available in LOGO!. Normally,
this includes all connectors, all basic functions and all special functions the LOGO! knows. This includes all blocks
you have created in LOGO! by the time you call the list
BN .
If not all is shown
LOGO! does not show all elements if:
No more blocks can be added
in this case, there is either no more memory space
available or the maximum possible number of blocks
was reached (56).
A specific block’s memory space requirement would
exceed the space available in LOGO! .
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LOGO! Functions
4.1 Constants and Connectors – Co
Constants and Connectors ( = Co) are inputs, outputs,
memory bits and fixed voltage levels (constants).
Inputs:
1) Digital inputs
Digital inputs are designated with an I. The numbers of the
digital inputs (I1, I2, ...) correspond with the numbers of the
input connectors of the LOGO! Basic and of the connected
digital modules in the order they were installed. See the
figure on the next page.
2) Analog inputs
The LOGO! versions LOGO! 24, LOGO! 12/24 RC and
LOGO! 12/24 RCo are equipped with the inputs I7 and I8
which can also be used as AI1 and AI2, depending on the
program. If these inputs are used as I7 and I8 the input
signal is interpreted as digital value. When using AI1 and
AI2 the signals are interpreted as analog value. When you
connect an analog module, the inputs are numbered in the
order of the existing analog inputs. When selecting the input signal in programming mode, only the analog inputs
AI1 to AI8 are offered for special functions which sensibly
ought to be connected to analog inputs. See the figure on
the next page.
Outputs
Outputs are designated with a Q. The numbers of the outputs (Q1, Q2, ...) correspond to those of the of the output
connectors of the LOGO! Basic and of the connected expansion modules in the order they were installed. See the
figure on the following page.
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Inputs
L+ M I1 I2 I3 I4 I5 I6 AI1 AI2
L+ M I9 I10I11I12
L+ M
RUN/STOP
L+ M
L+ M I13I14I15I16
RUN/STOP
RUN/STOP
PE
1
1
Q1
2
1
Q2
2
1
Q3
2
1
Q4
2
1
Q5
Q7
2
Outputs
2
1
1
Q6
2
2
Q8
1
INPUT 2x (..10V/..20 mA)
Q9
2
A!3 M3U3AI4M4U4 1
Q11
2
1
2
Q10
1
2
Q12
Analog inputs
Memory bits
Memory bits are identified with an M. Memory bits are
virtual outputs, with a value at their output analog to that at
the input. The LOGO! provides 8 memory bits, namely M1
... M8.
Tip on previous devices
With previous versions of LOGO! the maximum number of
blocks connected in series can be exceeded by adding
memory bits to the program.
Initialization memory bit
Memory bit M8 is set during the first cycle of the user program. You can therefore use it in the program as initialization memory bit. After the first program cycle it is automatically reset.
In all subsequent cycles you can use memory bit 8 in the
same way as memory bits M1 to M7 for setting, deleting
and evaluation operations.
Note
The output signal of the memory bit is always that of the
previous program cycle. The value does not change within
the same program cycle.
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LOGO! Functions
Levels
Voltage levels are designated hi and lo. A constant block
status of “1” = hi or “0” = lo is achieved via input of a fixed
level or constant hi or lo value.
Open connectors
Block pins not connected are symbolized with an x.
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LOGO! Functions
4.2 List of basic functions – BF
Basic functions represent a simple Boolean algebra logic.
When programming a circuit, you can find the basic function blocks in the BF list. In the last column you can locate
the position of every basic function by scrolling through the
BF list per key from top to bottom. Here are the available basic functions:
View in the circuit
diagram
View in LOGO!
Designation of the
basic function
Position
in
the
BF
AND
1
Series circuit
n.o. contact
(see page 87)
AND with edge triggering
7
(see page 87)
NAND
(AND not)
Parallel circuit n.c.
contact
4
(see page 88)
NAND with edge
triggering
8
(see page 89)
OR
Parallel circuit n.o.
contact
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(see page 87)
85
LOGO! Functions
View in the circuit
diagram
Series circuit n.c.
contact
View in LOGO!
Designation of the
basic function
Position
in
the
BF
NOR
(OR not)
5
(see page 90)
XOR
(exclusive OR)
Double changeover contact
n.c. contact
6
(see page 91)
NOT
(negation, inverter)
3
(see page 91)
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4.2.1 AND (AND)
Series connection of multiple
make contacts in the circuit diagram:
Symbol in LOGO!:
The status of the AND output is 1 when all inputs are 1,
that is, if they are closed.
The status of a block input pin which is not connected (x)
is: x = 1.
Table of the AND logic
1
2
3
Q
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
1
4.2.2 Edge–triggered AND
Symbol in LOGO!:
The output status of an edge–triggered AND is only 1 if all
inputs are 1, and if at least one input was 0 in the previous
cycle.
The status of a block input pin which is not connected (x)
is: x = 1.
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LOGO! Functions
Timing profile for the edge–triggered AND
1
2
3
Q
Cycle
1
2
3
4
5
6
7
8
9
1
0
4.2.3 NAND (AND not)
Parallel connection of multiple break
contacts in the circuit diagram:
Symbol in LOGO!:
The output status of the NAND is only 0 if all inputs are 1,
that is, if the contacts are closed.
The status of a block input pin which is not connected (x)
is: x = 1.
Table of the NAND logic
88
1
2
3
Q
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
0
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4.2.4 NAND With Edge Evaluation
Symbol in LOGO!:
The output status of the NAND with edge evaluation is only
1 if at least one input is 0 and if all inputs were 1 in the
previous cycle.
The status of a block input pin which is not connected (x)
is: x = 1.
Timing profile for the NAND with edge evaluation
1
2
3
Q
Cycle
1
2
3
4
5
6
7
8
9
1
0
4.2.5 OR (OR)
The parallel connection of multiple make
contacts in a circuit diagram:
Symbol in LOGO!:
The output status of the OR is only 1 if at least one input
is 1, that is, if one of the contacts is closed.
The status of a block input pin which is not connected (x)
is: x = 0.
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LOGO! Functions
Table of the OR logic
1
2
3
Q
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
4.2.6 NOR (OR not)
The series connection of multiple
break contacts in the circuit diagram:
Symbol in LOGO!:
The output status of the NOR is only 1 if all inputs are 0,
that is, if switched off. The NOR output is set to 0 at the 0
to 1 transition at one of the inputs.
The status of a block input pin which is not connected (x)
is: x = 0.
Table of the NOR logic
90
1
2
3
Q
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
0
0
0
0
0
0
0
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4.2.7 XOR (exclusive OR)
The XOR in the circuit diagram as 2
changeover contacts connected in series:
Symbol in LOGO!:
The output status of the XOR is 1 if the inputs are nonequivalent .
The status of a block input pin which is not connected (x)
is: x = 0.
Table of the XOR logic
1
2
Q
0
0
1
1
0
1
0
1
0
1
1
0
4.2.8 NOT (Negation, Inverter)
A break contact in the circuit diagram:
Symbol in LOGO!:
The output status is 1 if the input is 0. The NOT block is an
input status inverter.
The advantage of the NOT is, for example: For the LOGO!
you do not need break contacts anymore. You simply use a
make contact and convert it with the NOT into a break contact.
Table of the NOT logic
1
Q
0
1
1
0
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4.3 Basics on special functions
At first sight, the special functions differ from the basic
functions because of their different input designation. Special functions include timer functions, retentivity and diverse
parameter assignment options for customizing the program.
In this section we should like to give you a brief overview of
the input designations and of special basics relating to special functions. The special functions in particular are described in Chapter 4.4.
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4.3.1 Designation of the inputs
Logical inputs
Here you find the description of the connections which can
be linked to other modules or inputs of the LOGO! device.
S (set):
Input S can be used to set the output to “1”.
R (reset):
The reset input R has priority over all other inputs; it
switches the outputs to “0”.
Trg (trigger):
This input is used to trigger the start of a function cycle.
Cnt (count):
This input is used to capture count pulses.
Fre (frequency):
Frequency signals to be evaluated are input with this
designation.
Dir (direction):
This input, for example, determines the direction of
count.
En (enable):
This input enables the block functions. When this input
is “0”, the block ignores all other signals.
Inv (invert):
The output signal of the block is inverted when this input
is set.
Ral (reset all):
All internal values are reset.
Connection X at the inputs of the special functions
The inputs of the special functions are 0 when connected
to the connection ”x”. That is, the inputs are ’lo’.
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Parameter inputs
To some of the inputs you do not apply signals, but rather
assign specific values to the function block.
Par (parameter):
This input is not wired. Here, you configure the block
parameters.
T (time):
This input is not wired. Here you configure the times for
a block.
No (cam):
This input is not wired. Here, you configure the time patterns.
P (priority):
This input is not wired. Here, you specify priorities and
determine whether or not a message must be acknowledged in RUN mode.
4.3.2
Time Response
Parameter T
With some of the special functions it is possible to configure a time value T. When specifying the time, please note
that the values to be entered depend on the set timebase:
Timebase
__
:
__
s (seconds)
seconds
:
1/
m (minutes)
minutes
:
seconds
hours
:
minutes
h (hours)
B01:T
T=04.10h+
94
100
seconds
Setting the time T to 250 minutes:
Unit in hours h:
04.00 hours
00.10 hours
=
240 minutes
+10 minutes
250 minutes
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Note
Always specify a time T 0.10 s. The time T is not defined for T = 0.05 s and T= 0.00 s.
Accuracy of T
All electronic components have slightly different parameters. This can cause deviations in the configured time T.
With the LOGO! the maximum deviation is 0.02 %.
If 0.02 % of time T is smaller than 0.1 seconds the maximum deviation is 0.1 seconds.
Example:
The maximum deviation for 1 hour (3600 seconds) is
0.02 %, that is, 0.72 seconds.
The maximum deviation for 1 minute (60 seconds) is 0.1
seconds.
Timer switch accuracy
In order to prevent inaccuracies of clock timing in the C–
versions as a result of this deviation, the timer switch is
continuously compared with a highly accurate timebase
and readjusted. This results in a maximum timing deviation
of 5 s/day.
4.3.3 Buffering The Clock
The internal clock of a LOGO! continuous operation even
on power failure, that is, the clock is buffered. The duration
of this buffering is influenced by the ambient temperature.
At an ambient temperature of 25°C the buffering time is
normally 80 hours.
4.3.4 Retentivity
For special functions there is a possibility to keep circuit
states and counter values retentive. This, however, requires that retentivity is enabled for the respective functions. An exception is the principally retentive operating
hours meter. See also Chapter 6.1 on the description of
modules.
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4.3.5 Parameter Protection
In the parameter protection configuration you can specify
whether the parameters can be displayed and edited in
LOGO! parameter assignment mode . There are two optional configurations:
+: The parameter configuration can be displayed and
edited in parameter assignment mode, too.
–: The parameter configuration cannot be displayed in parameter assignment mode. Editing is only possible in programming mode. See the example on page 67.
4.3.6 Gain and Offset Calculation With Analog Values
The gain and offset parameters can be used to adjust the
internal image of an analog value to the actual measurement value.
Characteristic quantity
Minimum
Maximum
Terminal voltage (in V)
0
≥ 10
Internal value
0
1000
Gain (in %)
0
1000
–999
+999
Offset
The terminal voltage (at input AI) of 0 to 10 V is mapped
internally to values from 0 to 1000. A terminal voltage
higher than 10 V is mapped internally by the value 1000.
With the gain parameter, for example, you can achieve an
amplification of 1:10 at a setting of 1000 %.
The offset parameter can be used to shift the zero of measurement values.
Formula
Displayed value Ax = (Internal value + Offset) Gain / 100
The gain value displayed is the amplification as %–age.
Hence, the division by 100 in the formula.
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Example of analog values
Measurement
value
–30 C
0 C
+70 C
Voltage
(V)
Internal
value
Offset
Gain
Displayed
value
(Ax)
0
5
10
0
500
1000
0
0
0
1
1
1
0
5
10
0
5
10
0
500
1000
0
0
0
100
100
100
0
500
1000
0
5
10
0
500
1000
0
0
0
1000
1000
1000
0
5000
10000
0
5
10
0
500
1000
500
500
500
1
1
1
5
10
15
0
5
10
0
500
1000
500
500
500
100
100
100
500
1000
1500
0
5
10
0
500
1000
–200
–200
–200
100
100
100
–200
300
800
0
10
0
1000
–999
999
1000
1000
–9990
19990
0,02
0,02
0,02
0,02
2
2
2
2
0
0
0
0
1
10
100
1000
0
0
2
20
0
3
10
0
300
1000
–300
–300
–300
10
10
10
–30
0
70
You can find an a sample application in the description of
the special function “Analog comparator” on page 138.
For information on analog inputs also refer to Chapter 4.1.
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4.4 List of Special Functions – SFr
When programming in LOGO!, you can find the blocks for
the special functions in the SF list. In the table below you
can also find comparable views of circuit diagrams as well
as the information whether or not retentivity can be configured for the respective function. In the last column you can
locate the position of all SFs by scrolling through the list via
the key.
Display in the
circuit diagram
Display in
LOGO!
Designation
of the special
function
On delay
Re
Position
in SF
1
(see page 101)
Off delay
2
(see page 103)
On/off delay
14
(see page 105)
R
Trg
K
1
K
1
Retentive
on delay
K
1
Q
S
(see page 107)
Latching relay
R
K1
7
Re 5
(see page 109)
K1
Pulse relay
Re 3
(see page 111)
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Display in the
circuit diagram
Display in
LOGO!
Designation
of the special
function
Wiping relay
Re
Position
in SF
9
(see page 112)
Edge triggered
wiping relay
18
(see page 114)
Weekly timer
switch
4
(see page 115)
Yearly timer
switch
13
(see page 120)
Up/down
counter
Re 10
(see page 122)
Operating
hours meter
8
(see page 124)
Symmetric
clock generator
6
(see page 128)
Asynchronous
pulse generator
12
(see page 130)
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Display in the
circuit diagram
Display in
LOGO!
Designation
of the special
function
Random generator
Re
Position
in SF
15
(see page 131)
Frequency
trigger
Fre
11
(see page 133)
Analog trigger
20
(see page 135)
Analog
comparator
21
(see page 138)
Stairway lighting switch
16
(see page 141)
Comfort switch
17
(see page 143)
Message texts
19
P
(see page 145)
Softkey
En
Par
100
Re 22
Q
(see page 148)
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4.4.1
On Delay
Short description
An output with on delay is not switched on until a specified
time has expired.
Symbol in
LOGO!
Wiring
Description
Input Trg
Use input Trg (Trigger) to
start the on delay time
Parameter T
T is the time after which the
output is switched (0 to 1
transition of the output signal).
Output Q
Q is switched on when a
specified time T has expired, provided Trg is still
set.
Parameter T
Please not the value specification for parameter T in Chapter 4.3.2.
Timing diagram
Trg
Q
T
T
The section of the timing diagram displayed
in bold print is found
again in the symbol for
the on delay.
Ta expires
Description of the function
On 0 to 1 transition of input Trg the time Ta starts (Ta is the
current time in LOGO! .
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If the status of input Trg is 1 at least for the duration of the
configured time T, the output is set to 1 on expiration of this
time (the output follows the input with on delay).
The time is reset if the status of input Trg changes to 0
before the time T has expired.
The output is set to 0 when the status at input Trg is 0.
The time elapsed is reset after a power failure.
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4.4.2
Off Delay
Short description
The output is not reset until a configured time has expired.
Symbol in
LOGO!
Wiring
Description
Input Trg
You start the off delay at the
negative edge (1 to 0 transition) at input Trg (Trigger)
Input R
Input R resets the on delay
time. It also resets the output to 0.
Parameter T
T is the time after which the
output is switched off (1 to 0
transition of the output signal).
Output Q
Q is switched on with Trg. It
holds this state until T has
expired.
Parameter T
Please not the value specification for parameter T in Chapter 4.3.2.
Timing diagram
Trg
The bold printed section of the timing diagram is found again
in the symbol for the
off delay.
R
Q
Ta expires
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Description of the function
When the status of Trg has changed to 1, the output Q is
switched instantaneously to 1.
The actual time Ta in LOGO! restarts on a 1 to 0 transition
at Trg. The output remains set. When Ta reaches the configured value T (Ta=T), output Q is reset to 0 (off delay).
The time Ta restarts when input Trg is switched on and off
again.
Input R (Reset) is used to reset the time Ta and the output
before Ta has expired.
The time elapsed is reset after a power failure.
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4.4.3
On/Off Delay
Short description
An output with on/off delay is set and reset on expiration of
specified times.
Symbol in
LOGO!
Wiring
Input Trg
Description
The positive edge (0 to 1
transition) at input Trg (Trigger) starts the time TH for
the on delay.
The negative edge (1 to 0
transition) at input Trg (Trigger) starts the time TL for
the off delay.
Parameter Par
TH is the time after which
the output is switched on (0
to 1 transition of the output
signal).
TL is the time after which the
output is switched off (1 to 0
transition of the output signal).
Output Q
On expiration of the configured time TH, output Q is
switched on provided Trg is
still set. On expiration of the
time TL it is switched off,
provided Trg was not set
again.
Parameter TH and TL
Note the value specifications for the parameters TH and TL
in Chapter 4.3.2.
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Timing diagram
Trg
Q
T
TH expires
T
T
T
T
The bold printed
section of the timing diagram is
found again in the
symbol for the off
delay.
T
TL expires
Description of the function
The time TH starts after a 0 to 1 transition at input Trg.
If the status at input Trg is 1 at least for the duration of the
time TH, the output is set to 1 on expiration of the time TH
(the output follows the input on delayed).
The time is reset if input Trg changes to 0 before the time
TH has expired.
Time TL starts when the status at input Trg returns to 0.
If the status at input Trg is 0 at least for the duration of TL,
the output is set to 0 on expiration of the time TL (the output follows the input off delayed).
The time is reset if the status at input Trg returns to 1 before the time TL has expired.
The time elapsed is reset after a power failure.
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4.4.4
Retentive On Delay
Short description
A specified time starts after an input pulse. The output is
set on expiration of this time.
Symbol in
LOGO!
Wiring
Description
Input Trg
You start the on delay at the
negative edge (1 to 0 transition) at input Trg (Trigger).
Input R
Use the input R to reset the
on delay time and the output.
Parameter T
T is the time after which the
output is switched on (output transition 0 to 1).
Output Q
On expiration of the time T
output Q is switched on.
Parameter T
Note the value specifications in Chapter 4.3.2.
Timing diagram
Trg
R
Q
Ta expires
T
T
The bold printed section of the timing diagram is found again in the symbol
for the retentive on delay.
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Description of the function
The current time Ta starts at the 0 to 1 transition at input
Trg. Output Q is set to 1 when Ta = T. Further switching
actions at input Trg have no influence on Ta.
The output and the time Ta are only reset to 0 when the
status at input R is 1.
The time elapsed is reset after a power failure.
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4.4.5
Latching Relay
Short description
Input S sets output Q. Input R resets output Q.
Symbol in
LOGO!
Wiring
Description
Input S
Use input S to set output Q
to 1.
Input R
Use input R to reset output
Q to 0 again. If both S and R
are 1, the output is reset.
Parameter Par
This parameter can be used
to switch retentivity on and
off.
Ret:
off = no retentivity
on = the status is retentive
Output Q
Q is switched on with a signal at input S. This state is
maintained until input R is
set.
Timing diagram
R
S
Q
Switching behavior
A latching relay is a simple logic memory. The output value
depends on the input states and on the previous output
status. The following table shows the logic once again:
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Sn
Rn
Q
0
0
1
1
0
1
0
1
x
0
1
0
Comment
The status is retentive
Reset
Set
Reset (has priority over Set)
With enabled retentivity the status of the output signal does
not change when power is returned after power failure.
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4.4.6
Pulse Relay
Short description
A short one–shot at the input is used to set and reset the
output.
Symbol in
LOGO!
Wiring
Description
Input Trg
You use input Trg (Trigger)to switch the output Q
on and off.
Input R
The input R is used to reset
the output and the relay.
Parameter Par
This parameter can be used
to switch retentivity on and
off.
Ret:
off = no retentivity
on = the status is retentive
Output Q
Q is switched on with Trg
and off again with the next
Trg.
Timing diagram
Trg
R
The bold printed section of the
timing diagram is found again in
the symbol for the pulse relay.
Q
Description of the function
Output Q status is toggled at every 0 to 1 transition of the
status at input Trg, that is, the output is switched on or off.
Use input R to reset the pulse relay to initial state, that is,
the output is set to 0.
After a power failure the pulse relay is reset and the output
Q is set to 0 if you have not enabled retentivity.
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4.4.7
Wiping Relay – Pulse Output
Short description
An input signal generates a signal of specified length at the
output.
Symbol in
LOGO!
Wiring
Description
Input Trg
You use input Trg (Trigger)
to start the time for the wiping relay.
Parameter T
T is the time after which the
output is switched off (1 to 0
transition of the output signal).
Output Q
Q is switched on with Trg as
long as the time Ta expires
and the input is set to 1.
Parameter T
For information on the parameter T refer to the note in
Chapter 4.3.2.
Timing diagram
The bold printed section of the timing
diagram is found again in the symbol
for the wiping relay.
Trg
Q
Ta expires
T
T has not expired
Description of the function
The output status is switched to 1 after the input Trg is set
to 1. The time Ta is started at the same time and the output
remains set.
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When Ta reaches the value specified in T (Ta=T), the status
of output Q is reset to 0 (pulse output).
On input Trg transition from 1 to 0 before the specified time
has expired, the output follows immediately with a 1 to 0
transition.
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4.4.8
Edge–triggered Wiping Relay
Short description
An input signal generates an output signal of specified
length (retriggering).
Symbol in
LOGO!
Wiring
Description
Input Trg
Use the input Trg (Trigger)
to start the time for the
edge–triggered wiping relay.
Parameter T
T is the time after which the
output is switched off (1 to 0
transition of the output signal).
Output Q
Q is switched on with Trg. It
holds this state until T has
expired.
Parameter T
For information on the parameter T refer to the note in
Chapter 4.3.2.
Timing diagram
Trg
The bold printed section of the timing
diagram is found again in the symbol
for the edge–triggered wiping relay.
Q
Ta expires
T
T
Description of the function
The output status is switched to 1 after the input Trg is set
to 1. Time Ta is started at the same time. After Ta has reached
the value specified in T (Ta=T) the output Q status is reset
to 0 (pulse output).
The time Ta is reset if input Trg changes again from 0 to 1
(retriggering) before the specified time has expired. The
output remains switched on.
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4.4.9
Weekly Timer Switch
Short description
The output is controlled via a specified on–/off–date. The
function supports any combination of weekdays. You select
the active weekdays by hiding the inactive days.
Note
The LOGO! 24 version does not have an internal clock.
Therefore, the weekly timer switch cannot be used for this
version.
Symbol in
LOGO!
Wiring
Description
The parameters Cam 1,
Cam 2
Cam 3
In the Cam parameter you
set the on–/off–time respectively for one Cam of the
weekly timer switch. Here
you configure the days and
the time–of–day.
Output Q
Q is switched on when the
configured cam is switched
on.
Timing diagram (three examples)
Cam
1
21
1
1
1
1
3
1
3
Q
Monday
Wednesday
Friday
Sunday
Tuesday
Thursday
Saturday
Cam1: Daily:
06:30 h to 08:00 h
Cam 2: Tuesday:
03:10 h to 04:15 h
Cam 3: Saturday and Sunday: 16:30 h to 23:10 h
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Description of the function
Every weekly timer switch has three cams. You can configure in a time hysteresis for each cam. In the cam setting
you specify the on–/off–times. At the on–time, the weekly
timer switch switches on the output, if the output is not already switched on.
At the off–time, the weekly timer switch switches off the
output, if the output is not already switched off. The on–
and off–times are in conflict if their specified switching time
is the same for the weekly timer switch, but on different
cams. In this case cam 3 has priority over cam 2, whereas
cam 2 has priority over cam 1.
Parameter assignment screen form
This is what a parameter assignment screen form looks
like, for instance, for cam no.1:
Block B01
Cam 1
B01:Cam1
D=MTWTFSS+
On =06:30
Off=08:00
Weekdays (daily)
See display/hide parameter –
Type of protection on page 67
On–time (06.30 h)
Off–time (08.00 h)
Weekday
The letters behind the “D=” have the following meaning:
M : Monday
T : Tuesday
W : Wednesday
T : Thursday
F : Friday
S : Saturday
S : Sunday
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An upper case letter means that the weekday is selected.
The character “–” means that the weekday is not selected.
Switching times
Possible is any time between 00:00 h and 23:59 h.
––:–– means there are no on– and off–times.
Setting the weekly timer switch
This is how you specify the switching times:
1. Position the cursor on one of the Cam parameters of
the timer switch (e. g. Cam 1).
2. Confirm with OK. LOGO! opens the parameter assignment screen form for the cam. The cursor is positioned
on the weekday.
3. Use and to select one or several weekdays.
4. Use to move the cursor to the first position of the on–
time.
5. Set the on–time.
Modify the value at the respective position, using the
keys and . Move the cursor around to the various
positions, using the keys and . You can only select
the value ––:–– at the first position
(––:–– means: no switching operation).
6. Using the key , move the cursor to the first position of
the off–time.
7. Set the off–time (in same way as in step 5).
8. Confirm your entries Confirm with OK.
The cursor is positioned on the Cam 2 parameters. You
can now configure another cam.
Note
You can find information on timer switch accuracy in the
Technical Data and in Chapter 4.3.2.
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Weekly timer switch: Example
The output of the weekly timer switch is to be switched on
daily from 05:30 h to 07:40 h. The output should also be
switched on every Tuesday from 03:10 h to 04:15 h and at
the weekends from 16:30 h to 23:10 h.
This requires three cams.
Here are the parameter assignment screen forms of the
cams 1, 2 and 3, based on the timing diagram above.
Cam 1
Cam 1 must switch on the output of the weekly timer
switch daily from 05:30 h to 07:40 h.
B01:Cam 1
D=MTWTFSS+
On =05:30
Off=07:40
Cam 2
Cam 2 must switch on the output of the weekly timer
switch every Tuesday from 03:10 h to 04:15 h.
B01:Cam 2
D=–T–––––+
On =03:10
Off=04:15
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Cam 3
Cam 3 must switch on the output of the weekly timer
switch every Saturday and Sunday from 16:30 h to
23:10 h.
B01:Cam 3
D=–––––SS+
On =16:30
Off=23:10
Result
Cam
1
21
1
1
1
1
3
1
3
Q
Monday
Wednesday
Friday
Sunday
Tuesday
Thursday
Saturday
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4.4.10
Yearly Timer Switch
Short description
The output is controlled via a specified on–/off–date.
Note
The LOGO! 24 version does not have a clock. Therefore,
the yearly timer switch cannot be used for this version.
Symbol in
LOGO!
Wiring
Description
input Cam
In the Cam parameters, you
configure the on–/off–times
for the cams of the yearly
timer switch.
Output Q
Q is switched on when the
configured cam is switched
on.
Timing diagram
Feb.
mar.
Apr.
MM.DD+
On=02.20
Off=04.03
On
Off
20th of February
at 00:00 h
3rd of April
at 00:00 h
Description of the function
At the specified on–time the yearly timer switch switches
on the output. At the specified off–time the yearly timer
switch switches off the output. The off–date specifies the
day on which the output is reset to 0 again. The first value
identifies the months, the second value the day.
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Sample configuration
On 1st of March the output of a LOGO! is to be switched
on until the 4th of April. On 7th of July it is switched on
once again until the 19th of November. This requires two
yearly timer switches for which the respective on times
must be configured. The outputs are then linked via an OR
block.
B01:Cam
MM.DD
On =03.01
Off=04.04
on–time 1st of march
off–time 4th of April
B02:Cam
MM.DD
On =07.07
Off=11.19
in addition:
on–time 7th of July
off–time on 19th of November
Result
On
B01
B02
Off
1st of March
at 00:00 h
7th of July
at 00:00 h
4th of April
at 00:00 h
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at 00:00 h
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4.4.11 Up/Down Counter
Short description
Depending on the configuration, an internal value is
counted up or down at every input pulse. The output is set
when the configured count value is reached. A special input can be used to change the counting direction.
Symbol in
LOGO!
Wiring
Description
Input R
Input R resets the internal
count value and the output
to zero.
Input Cnt
The counter counts the 0 to
1 transitions at input Cnt. 1
to 0 transitions are not
counted. Maximum counting
frequency at the input terminals: 5 Hz
Input Dir
You specify the counting direction via the input Dir:
Dir = 0: Up–count
Dir = 1: Down–count
Parameter Par
Lim: Counter value limit at
which the output is reset by
the internal count value.
Ret: Enabling retentivity
Output Q
122
Q is switched on when the
count value is reached.
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Timing diagram
R
Cnt
Dir
internal
count value
Cnt
Par
0
Q
Description of the function
With every positive edge at input Cnt the internal counter
increments (Dir = 0) or decrements (Dir = 1) by one count.
.
Output Q is set to 1 when the internal value is greater than
or equal to the value specified in Par.
You can use reset input R to reset the output and the internal count value to ’000000’. When R=1, the output is 0 and
the pulses at input Cnt are not counted.
Configuration of the Par parameter
B03:Par
Lim=
000100+
Rem=off
Count value
See display/hide parameter –
Type of protection on page 67
Retentivity
The output is set when the internal value is greater than or
equal to the value specified in Par. The counter stops on
over/underflow.
Lim can lie between 0 and 999999.
Ret: This parameter is used to switch retentivity on and off
for the internal count value Cnt.
off = no retentivity
on = the count value Cnt is retentive
When retentivity is switched on, the counter value is maintained in the event of power failure. The count is resumed
at the same value after power is returned .
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4.4.12 Operating Hours Counter
Short description
A specified time starts when the input is set. The output is
set on expiration of this time.
Symbol in
LOGO!
Wiring
Input R
Description
R = 0: Counting is enabled if
Ral is not 1
R = 1: Counter has stopped
Use input R to reset the output. The time–to–go for the
maintenance interval MN is
set to the value MN = MI.
The time elapsed is maintained.
Input En
En is the monitoring input.
LOGO! measures the time
when this input is set.
Input Ral
Ral = 0:Counting is enabled
if Ral is not 1
Ral = 1: The counter has
stopped
Use input Ral (Reset all) to
reset the counter and the
output.
out
ut. That is,
output Q = 0,
measured operating
time OT = 0 and
the time–to–go of the
maintenance interval
MN = MI.
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Symbol in
LOGO!
Wiring
Parameter Par:
MI
Description
MI: maintenance interval to
be specified, in hour units.
MI can lie between 0 and
9999 hours.
Output Q
The output is set when the
time–to–go MN = 0 (see the
timing diagram).
MI = configured count value
MN= time–to–go
OT= total time elapsed since the last 1 signal at the
Ral input
Timing diagram
R
En
Ral
Q
MN=MI
Par:
MI=5h
MN=0
OT
1h
x
x–R=1h
R
The counter holds when R or Ral is set
MI = configured time interval
MN = time–to–go
OT = total time elapsed since the last 1 signal at the Ral–input
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Description of the function
The hours counter monitors the input En. As long as the
status of this input is 1, LOGO! determines the time expired and the time–to–go MN. The LOGO! displays the
times in parameter assignment mode. Output Q is set to 1
when the time–to–go MN = 0.
Use input R to reset output Q and time–to–go counter to
the specified value MI. The internal counter OT continues
the count.
Use input Ral to reset output Q and the time–to–go counter
to the specified value MI. The internal counter OT is reset
to 0.
Viewing MN and OT values
LOGO! Basic with display: In parameter assignment
mode you can view the actual values of MN and OT
while the program is running.
LOGO! Basic without display: with LOGO!Soft Comfort
(refer to Chapter 7 for additional information) you can
read the values as follows.
Note
The PC link must be connected to the LOGO! before you
switch on the power supply. .
1. In the “Extras transfer” menu, select the menu item
“Hours counter”. A connection is automatically established to the LOGO! and the current program is fetched.
2. An Info box pops up showing the data.
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Note
The hours counter can be fetched without entering a password.
If your LOGO! without display is equipped with a red module you cannot fetch the hours counter, because the program of the LOGO! will be deleted when you remove the
module (to connect the PC cable) .
Limit value for OT
Elapsed operating hours are saved in OT when using the
input R signal to reset the hours counter. The limit value for
the OT counter is 99999 h.
When the hours counter reaches this value, no more hours
are counted.
The OT value ensures retentivity of the hours counter.
Configuration of the Par parameter
B03:Par
MI = 0000h+
Monitoring interval in hours
Parameter
protection
MI is the specified time interval. It can lie between 0 and
9999.
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4.4.13 Symmetric Clock Generator
Short description
The period of the output clock signal is configurable.
Symbol in
LOGO!
Wiring
Description
Input En
Use the input En to switch
the clock generator on and
off.
Parameter T
T is the time during which
the output is switched on or
off.
Output Q
Q is toggled periodically depending on the clock cycle
time T.
Parameter T
Note the value specifications in Chapter 4.3.2.
Timing diagram
En
Q
T
T
T
T
The bold printed section of the timing diagram is found again in
the symbol for the symmetric clock generator.
Description of the function
In parameter T you specify the length of the on and off
times. Via input En (Enable) you can switch on the clock
generator, that is, the generator toggles the output between
1 and 0, respectively for the duration of the time T, until the
input status is 0 again.
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Note relating to relay outputs:
The output contacts of a relay wear slightly when switched
under load. You can find information on the number of
switching cycles an output of a LOGO! can safely carry out
in the Chapter ’Technical Data’ (see Chapter A).
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4.4.14 Asynchronous Pulse Generator
Short description
The pulse profile of the output can be customized via
pulse/pause ratio.
Symbol in
LOGO!
Wiring
Description
Input En
You can use input EN to
switch the asynchronous
pulse generator on and off.
Input INV
You can use input INV to invert the output signal of the
active asynchronous pulse
generator.
Parameter Par
You can customize the period TH and the pulse pause
width TL.
Output Q
Q is toggled periodically, depending on the clock cycles
TH and TL.
Timing diagram
En
Inv
Q
TH
TL
TH
TL
TH
TH
TL
Description of the function
In the parameters TH (Time High) and TL (Time Low) you
can adjust the period and the pause width.
With input INV you can also invert the output. The input
block INV only negates the output if it is enabled via EN.
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4.4.15 Random Generator
Short description
With a random generator the output is switched on and off
again within a specified time.
Symbol in
LOGO!
Wiring
Input En
Description
You can start the on delay
time of the random generator at the positive edge (0 to
1 transition) at the enable input En.
You can start the off delay
time of the random generator at the negative edge (1
to 0 transition).
Parameter Par
The random on delay time is
0 s to TH.
The random on delay time is
0 s to TL.
Output Q
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On expiration of the on
delay time output Q is
switched on, provided En is
still set. On expiration of the
off delay time it is switched
off, provided En was not set
again meanwhile.
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Parameter TH and TL
Note the value specifications for the parameters TH and TL
in Chapter 4.3.2.
Timing diagram
En
The bold printed section of the timing diagram is found again in
the symbol for the off
delay.
Q
T is
running
TH
TL
Description of the function
A random time (on delay) between 0 s and TH is determined and started at the 0 to 1 transition of the status at
input EN. The output is set to 1 on expiration of the on
delay time, if the status at input En is 1 at least for the
duration of the on delay time.
The time is reset if the status at input En returns to 0 before the on delay time has expired.
When the status at input En returns to 0, a random time
(off delay) between 0s and TL is determined and started.
The output is reset to 0 on expiration of the off delay time,
if the status at input En is 0 at least for the duration of the
off delay time.
The time is reset if the status at input En returns to 1 before the on delay time has expired.
The time elapsed is reset after a power failure.
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4.4.16
Frequency Threshold Trigger
Short description
The output is switched on and off, depending on two specified frequencies.
Symbol in
LOGO!
Wiring
input Fre
Fre
Description
At input Fre you connect the
input that supplies the
pulses to be counted.
Use
inputs I5/I6 for fast
counting operations
(only LOGO! 12/24 RC/
RCo and LOGO! 24):
max. 1 kHz.
any other input or circuit
component for counting
low frequencies.
Parameter Par:
SW: on threshold
SW, SW
G_T
SW: off threshold
Output Q
Q is switched on and off depending on SW and SW.
G_T: Time interval or gate
time during which the pulses
are measured.
Timing diagram
Q
G_T
Fre
fa = 9
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fa = 8
fa = 5
SW = 9
SW = 5
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Description of the function
The threshold switch measures the signals at input Fre.
The pulses are captured across a specified period G_T.
Output Q is switched on if the value measured within the
time G_T is higher then the on and off threshold.
Q is switched off again when the measured pulse rate is
equal to/lower than the off threshold value.
Configuration of the Par parameter
B03:Par
SW=0050+
SW=0048
G_T:01:00s
on threshold
Parameter protection
off threshold
Time interval for pulses
SW is the on threshold. The permitted range is 0000 to
9999.
SW is the off threshold. The permitted range is 0000 to
9999.
G_T is the time interval during which the pulses at the Fre
input are measured. The permitted range for G_T is
00.05 s to 99.95 s.
Note
When you specify a time G_T of 1 s, the LOGO! returns
the current frequency in parameter fa in Hz.
fa is always the sum of the measured pulses per time unit
G_T.
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4.4.17
Analog Threshold Switch
Short description
The output is switched on when the analog value exceeds
a specified on threshold. The output is switched on when
the analog value drops below a specified off threshold (hysteresis).
Symbol in
LOGO!
Wiring
Input Ax
Description
At input Ax you apply the
analog signal you want to
evaluate.
Always use the terminals I7
(AI1) or I8 (AI2), only the
LOGO! 12/24 RC/RCo and
LOGO! 24 or those of
an analog module.
0–10 V is equivalent to
0–1000 (internal value).
Parameter Par:
, , SW,
SW
: Gain in %
range of values
0..1000 %
: Offset
range of values 999
SW: on threshold
range of values
19990
SW: off threshold
range of values
19990
Output Q
Q is set and reset depending on the thresholds.
Gain and offset parameters
Note the information relating to the gain and offset parameters in Chapter 4.3.6.
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Timing diagram
1000
SW
SW
Ax
0
Q
Description of the function
This function fetches the analog value of a signal at the
analog input (AI1 ,AI2...AI8).
The offset parameter is then added to the analog value.
The result is multiplied by the gain parameter.
Since this is given as a %–age, the value 1000% for
instance is equivalent to a multiplication by 10. See Chapter 4.3.6.
Output Q is set to 1 if this value exceeds the on threshold
(SW).
Q is reset to 0 again after the value reaches or drops below
the off threshold (SW).
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Configuration of the Par parameter
The gain and offset parameters are used to adapt the used
sensors to the respective application.
Parameter assignment:
B03:Par
SW =+00000
SW =+00000
=0050+
on threshold
off threshold
Gain in %
Parameter protection
Press the key
SW=+00000
SW=+00000
=0050+
=+200
Offset
Display in parameter assignment mode (example):
B02:Par
SW =+400
SW =+200
Ax =+20
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4.4.18
Analog Comparator
Short description
The output is switched on if the difference Ax – Ay exceeds
the set threshold.
Symbol in
LOGO!
Wiring
Inputs Ax and
Ay
Description
At the inputs Ax and Ay, apply the analog signals for
which you want to evaluate
the difference.
Use the terminals I7 (AI1)
and I8 (AI2), only the
LOGO! 12/24 RC/RCo and
LOGO! 24 or those of
an analog module.
Parameter Par:
, , : Gain in %
range of values
0..1000 %
: Offset
range of values 999
: threshold
Output Q
Q is set to 1 if the difference
Ax–Ay exceeds the threshold.
Gain and offset parameters
Note the information relating to the gain and offset parameters in Chapter 4.3.6.
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Timing diagram
1000
Ax
0
1000
Ay
0
1000
Ax–Ay
>200
0
–200
Q
for Ax - Ay > 200
Description of the function
The analog comparator function carries out the following
calculations:
1. The value configured in the offset parameter is added to
Ax and Ay.
2. Ax and Ay are multiplied by the gain parameter. Since
this is given as a %–age, the value 1000% for instance
is equivalent to a multiplication by 10.
3. The function forms the difference of the analog values
Ax–Ay
Output Q to 1 if this differential value exceeds the threshold
you have configured under . Otherwise Q is reset to 0.
Calculation rules
Q = 1, if:
[(Ax + offset) gain] – [(Ay + offset) gain] > threshold
Configuration of the Par parameter
The gain and offset parameters are used to adapt the used
sensors to the respective application.
B03:Par
=00000+
=0050
=+200
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Gain in %
Offset
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Example
For the controls of a heater, the supply and return line temperatures Tv (e.g. with a sensor at AI1) and Tr (e.g. with a
sensor at AI2) are to be compared.
A switching operation is to be triggered (e.g. burner on) if
the return line temperature deviates by more than 15 C
from the supply line temperature.
The physical temperature is to be displayed in parameter
assignment mode.
Available are thermal elements with the following technical
data: –30 to +70C, 0 to 10 V DC.
Application
Internal mapping
–30 to +70 C = 0 to 10V DC
0 to 1000
0 C
300
Offset = –300
Range of values:
1000
–30 to +70 C = 100
Gain = 100/1000
= 0,1 = 10 %
Switching threshold = 15 C
Threshold = 15
See also Chapter 4.3.6.
Parameter assignment:
B03:Par
=00015
=0010+
=-300
Display in parameter assignment mode (example):
B03:Par
= 20
Ax = 10
Ay = 30
140
B03:Par
= 30
Ax = 10
Ay =– 20
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4.4.19 Stairway Lighting
Short description
The input pulse (edge control) starts a specified time. The
output is reset on expiration of this time. 15 s prior to the
expiration of this time an off pre–warning is generated.
Symbol in
LOGO!
Wiring
Description
Input Trg
Use the input Trg (Trigger)
to start the timer for the
stairway lighting switch (off
delay).
Parameter T
T is the time after which the
output is switched off (1 to 0
transition of the output status).
Default timebase is the minute.
Output Q
On expiration of the time T
Q is switched off. 15 s prior
to the expiration of this time
the output is switched to 0
fro the duration of 1 s.
Parameter T
Note the value specifications in Chapter 4.3.2.
Timing diagram
Trg
Q
Ta expires
T
Pre–warning duration
1s
15s
Pre–warning time
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Description of the function
The output Q is set to 1 on a 0 to 1 transition at input Trg.
At the 1 to 0 transition of the status at input Trg the current
time Ta starts. The output Q remains set.
15 s before Ta reaches the time T the output Q is reset to 0
for a time of 1 s.
When Ta = T, the output Q is reset to 0.
When input Trg is switched on and off again while Ta expires, Ta is reset (retriggering option).
The time elapsed is reset after a power failure.
How to change the timebase
You can also set other values for the pre–warning time and
pre–warning period .
Timebase T
Pre–warning
time
Pre–warning
duration
Seconds*
750 ms
50 ms
minutes
15 s
1s
hours
15 min
1 min
*Only feasible for programs with a cycle time < 25 ms
See also “Determining the cycle time” in Appendix B.
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4.4.20 Multifunctional switch
Short description
Switch with two different functions:
Pulse switch with off delay
Switch (continuous lighting)
Symbol in
LOGO!
Wiring
Description
Input Trg
Use input Trg (Trigger) to
switch on the output Q (off
delay or continuous lighting). The active output Q
can be reset with Trg.
Parameter Par
TH is the time after which
the output is switched off (1
to 0 transition of the output
status).
TL is the period during
which the input must be set
in order to enable the continuous lighting function.
Output Q
The output Q is switched on
with Trg. Depending on the
pulse width at the input Trg,
it is switched off again on
expiration of a specified
time, or reset by setting Trg
once again.
Parameter TH and TL
Note the value specifications in Chapter 4.3.2. (as a reminder: “Always specify a time T 0.10 s. The time T is
not defined for T = 0.05 s and T= 0.00 s”)
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Timing diagram
Trg
TL
Q
Ta expires
TH
Description of the function
The current time Ta starts and the output Q is set to 1 at
the 0 to 1 transition of the status at input Trg.
When Ta reaches the time TH, the output Q is reset to 0.
The time elapsed is reset after a power failure.
At the 0 to 1 transition of the status at input Trg and if the
status ’1’ is set at least for the duration of the time TL, the
continuous lighting function is enabled and output Q is
switched on continuously.
If the input is switched once again, Trg resets TH nevertheless and the output Q is switched off.
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4.4.21 Message Texts
Short description
Displaying a specified message text in RUN mode.
Symbol in
LOGO!
Wiring
Description
Input En
The 0 to 1 transition of the
status at input En (Enable)
starts the output of the message text.
Parameter P
P represents the priority of
the message text.
Ack: Acknowledgment of the
message text.
Parameter Par
Par is the text for the message output.
Output Q
Q is set as long as the message text is displayed.
Restriction
A maximum of five message text functions are possible.
Description of the function
On 0 to 1 transition of the status at input En the display
shows in RUN mode your specified message text .
Acknowledgment disabled (Ack = Off):
On 1 to 0 transition of the status at input En the message
text is hidden.
Acknowledgment enabled (Ack = On):
On a 1 to 0 transition of the status at input En, the message text is held until acknowledged with OK. When En is
1, you cannot acknowledge the message text.
When multiple message text functions are triggered with
En=1, the message text with the highest priority is shown
(0=lowest, 9=highest).
You can toggle between the standard display and the message text display using the keys and .
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Example
This is how a message text might be displayed:
En=1
Motor 2
3000
hours
MAINTENANCE!
Th 09:30
06.21.01
Parameter assignment screen form
This is how to configure the priority and the acknowledgment:
B03:P
Priority
0
Ack=Off
Parameter assignment screen
form for P
Priority
Status of the acknowledgment
1. Increase priority to 1:
2. Change to ’Ack’:
3. Enable ’Ack’:
LOGO! displays:
B03:P
Priority
1
Ack=On
Cursor on ’0’ +
Press the key
per or
Parameter assignment screen
form for P
Priority 1
Status of acknowledgment ’On’
4. Confirm messages
with OK
This is how to configure the message text:
..
..
..
..
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Parameter assignment
screen form for Par
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Using the key , select the row for the message text.
Confirm with OK to open the editing mode for this line.
Use the keys and to select the letter to be displayed.
Move the cursor from one position to the other, using the
keys and .
The list of available characters is the same as for the program name. You can find a character set in Chapter 3.6.4.
Confirm the changes with OK. Exit the editing mode with
ESC.
In order to output a parameter (e.g.: the display of a measurement or function value) as message text in a line, select this line with the key and then press the key :
Par
..
..
..
Confirm with OK to open editing mode:
B01>T
Use the keys and to select the blocks to be displayed
and their corresponding parameters .
Use the keys and to select the block or the parameter
you want to view.
Select the parameter with OK.
Exit parameter assignment mode with ESC. Your changes
are applied.
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4.4.22 Softkey
Short description
This logical function has the effect of a mechanical momentary switch or of a switch.
Symbol in
LOGO!
En
Par
Wiring
Description
Input En
On a 0 to 1 transition of the
status at input En (Enable)
the output Q is switched on,
provided ’Switch=On’ was
confirmed in parameter assignment mode.
Parameter Par
When programming:
Par gives you the option to
use the function as momentary pushbutton in one cycle
or to use it as switch.
Ret:
off = no retentivity
on = the status can be
saved retentive
In RUN mode:
Switch: switches the pushbutton or switch on or off.
Output Q
Switches on if En=1 and if
Switch=On was confirmed
with OK.
Q
Factory default
The factory default setting of ’Par’ is ’Pushbutton’.
Timing diagram
En
Switch
Q
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Description of the function
The output is switched on after input En is set and, in parameter assignment mode, if ”On” is selected in the parameter ’Switch’ ’On’ and confirmed with OK. Whether the
function was configured as pushbutton or switch is here of
no concern.
The output is reset to ’0’ at three events:
At the 0 to 1 transition of the status at input En.
When the function was configured as pushbutton and
one cycle has expired since it was switched on.
When the position ’Off’ was selected in the parameter
’Switch’ and confirmed with OK in parameter assignment mode.
Configuration of the Par parameter
In programming mode:
1. Select the ’Softkey’ function.
2. Select input En and confirm with OK. The cursor is now
positioned below ’Par’.
3. Change to the input mode of ’Par’:
Confirm with OK
(the cursor is now positioned to ’On’)
B03:Par
On=
Rem=Off
The function is configured as
’pushbutton’
The status is not retentive
This is how to change ’Par’ to ’Switch’ and activate retentivity (Ret=On):
4. Toggling between the ’Pushbutton’ and ’Switch’ function:
per or
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B03:Par
On/Off
Function as ’Switch’
Rem=Off
The status is not retentive
5. Change to retentivity:
6. Enable retentivity:
per
per
or
or
B03:Par
On/Off
Function as ’Switch’
Rem=On
The status is retentive
7. Confirm your entries with
with OK
In parameter assignment mode (RUN mode):
Here, you can switch the parameter ’Switch’ on and off
(On/Off). In RUN mode LOGO! displays:
B03:Par
Switch=Off
Let us assume you want to activate ’Switch’ (On).
1. Change into editing mode:
Confirm with OK
(the cursor is now positioned to ’Off’)
2. Change from ’Off’ to ’On’:
per or
3. Confirm your entries with
with OK
B03:Par
Switch=On
150
Here, for example,
the switch is On
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5 Configuring LOGO!
We consider ’parameter assignment’ as the configuration
of block parameters. You can set delay times for time functions, switching times for the timer switches, the threshold
value of a counter, the monitoring interval of an operating
hours counter and the on and off thresholds of the triggers.
You can configure the parameters:
In programming mode
In parameter assignment mode
In parameter assignment mode, the programmer configures the parameters.
We introduced this parameter assignment mode to allow
editing of the parameters without having to change the program. In this way, for example, a user can edit parameters
without having to switch to programming mode. The advantage: The program (and thus the circuit) is protected but
can still be modified by the user of the circuit to suit requirements.
Note
In parameter assignment mode, the LOGO! continues
processing of the program.
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Configuring LOGO!
5.1 Switching To Parameter Assignment
Mode
In RUN mode, you can switch to parameter assignment
mode by pressing the ESC key:
Mo 09:30
06.21.01
...and press
ESC
LOGO! switches to parameter assignment mode and displays Parameter assignment menu:
>Stop
Set Param
Set Clock
Prg Name
Description of the four menu options in the parameter assignment menu
Stop
You are going to use this menu item to stop your program
and, as a result, open the main menu in programming
mode. Proceed as follows:
1. Move the ’>’ character to ’Stop’:
per or
2. Confirm the ’Stop’:
OK
Stop Prg
>No
Yes
3. Move the ’>’ character to ’Yes’:
4. Confirm ’Yes’:
152
per
OK
or
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Configuring LOGO!
LOGO! returns to the main menu:
>Program..
PC/Card..
Clock..
Start
Set Param
The diverse parameters are described in the following
Chapters 5.1.1 to 5.1.3.
Set Clock
The menu item ’Set Clock’ is only executed in a LOGO!
equipped with a clock (LOGO!..C). In ’Set Clock’ you can
set the internal clock of the LOGO!. Closer detail in section 5.2.
Prg Name
Under this menu item you can only read your program
name. In parameter assignment mode it is not possible to
change the program name.
5.1.1 Parameter
Parameters are:
The delay times of a timer relay.
The switching times (cams) of a timer switch.
The threshold value of a counter
The monitoring time for an operating hours counter
The switching thresholds of a threshold switch.
Each one of the parameters is identified by its block number and mnemonics. Examples:
B01:T
Block number
Mnemonic
T: ...is a configurable time.
Cam 1: ...is the first cam of a timer switch.
Par: ...denotes multiple counter parameters that can be
monitored.
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Configuring LOGO!
5.1.2 Selecting the Parameters
Select a parameter:
1. In the parameter assignment menu via ’Set Param’ option
or
STOP
>Set Param
Set Clock
Prg Name
2. Press OK
LOGO! displays the first parameter. If parameters cannot be set, you can use ESC to return to the parameter
assignment menu.
B01:T
T = 12:00m
Ta= 00:00m
Parameter
Value set for the parameter
the current time in the LOGO!
Parameters cannot be changed:
ESC returns you to the parameter
assignment menu
No Param
Press ESC
3. Now, Select the desired parameter:
Use the or
LOGO! displays one parameter respectively in separate
windows.
4. If you want to edit a parameter, select it and press OK.
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5.1.3 Changing the Parameters
To change a parameter, you first have to select it (see ”Selecting a parameter).
You change the value of the parameter in the same way as
you entered it in programming mode:
1. Move the cursor to the point at which you want to make
the
change:
per or
2. Change the value:
per or
3. Confirm the value:
OK
B01:T
T = 01:00m
Ta= 00:00m
Move: or Done: OK
Change the value: or Note
In parameter assignment mode, you cannot change the
unit of the delay time or the parameter protection for the
parameter T. This is only possible in programming mode.
Current value of a time T
If you view a time T in parameter assignment mode, it look
like this:
B01:T
T = 12:00m
Set time T
Ta= 00:00m
Current time Ta
You can change the set time T (see ”Changing a parameter).
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Configuring LOGO!
Current value of the timer switch
If you view a cam of a timer switch in parameter assignment mode, it looks like this, for example:
B02:Cam 11
Day = Su
On =09:00
Off=10:00
The circuit state of the timer switch
is displayed:
0
The timer switch is off (status ’0’ at the output)
1
The timer switch is on
(status ’1’ at the output)
LOGO! displays the circuit state of the timer switch rather
than the circuit state of a cam. The circuit state of the timer
switch depends on all three cams (Cam 1, Cam 2 and
Cam 3).
Current value of a counter
If you view the parameter of a counter in parameter assignment mode, it looks like this:
B03:Par
Lim=000300
Switching threshold
Cnt=000028
Current count value
Current value of an operating hours counter
If you view the parameter of an operating hours counter in
parameter assignment mode, it looks like this:
B05:Par
MI = 0100h
MN = 0017h
OT =00083h
156
Monitoring time
time–to–go
Operating hours elapsed
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Configuring LOGO!
Current value of a threshold switch
If you view the parameter of a threshold switch in parameter assignment mode, it looks like this:
B06:Par
SW=0050
SW=0048
fa=0012
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On threshold
Off threshold
Measured value
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Configuring LOGO!
5.2 Setting the Time–of–day and the Date
(LOGO! ... C)
You can set the TOD and the date
In parameter assignment mode
In programming mode.
How to set the TOD and the date in parameter assignment
mode:
1. Open the parameter assignment mode (refer to Chapter 5.1)
2. Select ’Set Clock’ ( or ) and press OK.
Set Clock
_Th 15:30
MM.DD.YY
06.21.01
The cursor position
precedes the day of
the week.
3. Select the day of the week:
per or
4. Move the cursor to the next position:
per or
5. Change the value: per or
6. Set the correct TOD. Repeat steps 4 and 5.
7. Set the correct date. Repeat steps 4 and 5
8. Close your entries:
OK
How to set the TOD and the date in programming mode:
1. Switch to programming mode: In RUN, execute the
menu item ’Stop’. (see page 45)
2. Select ’Clock..’ ( or ) and press OK.
3. Select ’Set Clock’ ( or ) and press OK
Now you can set the day of the week and the time, as described above (as of step 3.).
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6 LOGO! Program Modules
In LOGO! you can only keep one program stored in
memory. If you want to modify the program or write another
program without deleting the first one, you must archive it
somewhere. You can use program modules/cards to do
this.
You can copy the program stored in the LOGO! to a program module/card. You can then insert the program module/card in another LOGO! and copy the program to this
LOGO! . You can use the program module/card to do the
following:
Archive programs
Duplicate programs
Mail programs
Write and test programs out of the field at your office
and then transfer it to a LOGO! in the switching cabinet.
LOGO! is supplied with a hood. You receive the program
module/card separately.
Note
You do not require a module for storing your LOGO! program permanently.
The LOGO! program is already stored permanently when
programming mode is closed.
Below we shall introduce the two modules that you can
purchase for your LOGO! . Both of them can accommodate
the entire program memory of a LOGO! .
Module
Order no.
Yellow module: for copying
6ED1 056–1BA00–0AA0
Red module: with know–how/
copy protection
6ED1 056–4BA00–0AA0
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LOGO! Program Modules
6.1 Overview of the Modules
Yellow program module
Programs can be transferred from the yellow module to the
device and vice versa.
Red program module
A program is protected if it is transferred from a red module to the LOGO! .
Such a protected program can only run if the red module
remains inserted in LOGO! during runtime.
A protected program cannot be edited.
A program is not protected anymore when the correct
password is entered.
If you create a program for the red module and want to edit
it at a later time you must assign it a password.
Compatibility
... under current versions (0BA3 devices):
A module written in one of the basic versions (0BA3 devices) can be read in all other basic versions.
... under previous versions (0BA0 to 0BA2 devices):
A module
written in a standard version can be read in all the other
versions.
written in a LOGO! ...L version, can be read in all other
LOGO! ...L versions; but not in a standard version.
written in a LOGO! ...LB11 version, can be read in all
other LOGO! ...LB11 versions; but not in a standard version or in a LOGO! ...L version.
... 0BA3 devices ––> 0BA0 to 0BA2 devices:
A module written in one of the basic versions (0BA3 devices) can only be read in 0BA3 devices.
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Upward compatibility
The new 0BA3 devices support upward compatibility. A
module written in one of the standard, long or bus versions
(0BA0 to 0BA2 devices) can be read in all basic versions
(0BA3 devices).
Note
Re upward compatibility: An adaptation of the program or
an upgrade of the LOGO! Basic is required (and sensible)
in some cases in order to achieve appropriate results. See
the information on “Fast inputs” in Chapter 2.3.2.
6.2 Removing and Inserting Modules
When removing a red module (know–how/copy protection),
note that: The program stored on this module can only run
if the module remains inserted during runtime.
If the module is removed the LOGO! reports a ’No program’ error. Removal of the red module during runtime
leads to impermissible operate states.
Always heed the following warning:
!
Warning
Do not put your finger or objects made of metal
or any other conductive material in the open slot
of the program module/card.
The socket for the program module/card may be
live if L1 and N have been incorrectly wired.
The program module/card must always be replaced by a skilled technician.
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LOGO! Program Modules
Removing the module
This how to remove the program module/card:
Carefully insert a screwdriver into the slot at the upper end
of the program module/card and ease it out of the slot a
little.
You can now remove the program module/card:
Inserting the program module/card
The slot for the program module/card is chamfered at the
lower right edge. The program module/card also has a
chamfered edge. This prevents you from inserting the program module/card the wrong way around. Insert the program module/card into the slot until it engages.
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6.3 Copying from the LOGO! to the Module
This is how you copy a program to the program module/
card:
1. Insert the program module/card into the slot.
2. Switch the LOGO! to programming mode. In RUN
mode: Press ESC and execute the menu item ’Stop’.
(see page 45)
>Program..
PC/Card..
Clock..
Start
LOGO! main menu
3. Move the ’>’ to ”PC/Card”:
Press the key
4. Press OK. The transfer menu opens.
>PC
Card
Card
= LOGO!
5. Move the ’>’ to ’LOGO Card’:
Press the key
6. Press OK.
LOGO! copies the program to the program module/card.
When LOGO! has finished copying, it automatically returns
to the main menu:
>Program..
PC/Card..
Clock..
Start
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LOGO! Program Modules
The program is now also stored on the program module/
card. You can now remove the program module/card: Do
not forget to replace the cover .
If power is lost while LOGO! is copying the program you
must copy it once again when power is returned.
Note
If the program in the LOGO! is protected with a password
X, the copied program in the module/card is also protected
with the same password.
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6.4 Copying from the Module to LOGO!
You have a program module/card containing your program.
You can copy the program to LOGO! in two ways :
Automatic copying when LOGO! starts up (POWER
ON) or
via the PC/Card menu in LOGO!.
Note
Íf the program in the module/Card is protected with the
password X, the copied program in the LOGO! is also
protected with the same password.
Before you copy a module written in another device type,
refer once again to the information on ’Compatibility of
LOGO! versions or devices’ in Chapter 6.1.
Automatic copying when LOGO! starts up
Proceed as follows:
1. Switch off the power supply to the LOGO! (POWER
OFF)
2. Remove the slot cover.
3. Insert the program module/card into the appropriate
slot.
4. Switch off the power supply to the LOGO! .
Result: LOGO! copies the program from the program module/card to LOGO!. When LOGO! has finished copying, it
displays the main menu:
>Program..
PC/Card..
Clock..
Start
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LOGO! Program Modules
Note
Before you switch the LOGO! to RUN, you must ensure
that the system you are controlling with LOGO! does not
represent a source of hazard.
1. Move the ’>’ character to Start:
2. Press OK.
per
or
Using the PC/Card menu to copy
Read the note about changing the
program module/card.
This is how you copy a program from the program module/
card to LOGO!:
1. Insert the program module/card
2. Switch the LOGO! to programming mode. In RUN
mode: Press ESC execute the menu item ’Stop’. (see
page 45)
>Program..
PC/Card..
Clock..
Start
3. Move the ’>’ to ”PC/Card”:
Press the key
4. Press OK. The transfer menu opens.
5. Move the ’>’ to ’Card LOGO’:
or
PC
Card
>Card
= LOGO!
6. Press OK.
LOGO! copies the program from the program module/card
to LOGO!. When LOGO! has finished copying, it automatically returns to the main menu.
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7 LOGO! Software
The program LOGO!Soft Comfort is available as a programming package for the PC. This software includes the
following features:
Offline program generation for your application
Simulation of your circuit (or program) on the computer
Generation and printing of a block diagram
Saving the program to the hard disk or other storage
media
Program transfer
– from the LOGO! to the PC
– From the PC to LOGO!
Reading the operating hours counter
Setting the TOD
Summertime/Wintertime conversion
The LOGO! alternative
Thus, LOGO!Soft Comfort offers you an alternative to conventional means of planning:
1. First you develop your applications at your desktop.
2. You simulate the application in your computer and test
whether or not it functions properly before the circuit is
actually put to use.
3. You print out the entire circuit in one or several block
diagrams, sorted according to outputs.
4. You archive your circuits in your PC file system. In this
way you can retrieve a circuit directly for future
changes.
5. You transfer the program to LOGO! at a touch with just
a few key operations. Your LOGO! is quickly retooled.
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LOGO! Software
LOGO!Soft Comfort
In LOGO!Soft Comfort you can create your circuit programs efficiently and in a comfortable, well arranged way
(”wiring per keyboard“). Programs are created on the PC
desktop per the drag&drop routine. Once you have created
you program, you can have the system evaluate your program in order to determine the required LOGO! version, or
you can determine this before you start programming.
One particularly user–friendly feature is the offline program
simulation facility, which enables the simultaneous status
display of multiple special functions and permits extensive
documentation of the programs created. This optional programming software also offers a comprehensive Online
Help on CD ROM.
LOGO!Soft Comfort runs under Windows 95/98,
Windows NT 4.0, Windows Me, Windows 2000, Linux,
and Mac OS X. It is capable of server operation and offers
all the freedom and comfort for programming you could
expect.
LOGO!Soft Comfort V3.0
This is the current version of LOGO!Soft Comfort. As of
Version 3.0 you will find all the functions and functionality
included in the new devices, exactly in the way they are
described in this manual.
Upgrade from LOGO!Soft Comfort V1.0 and V2.0
If you own an old version of LOGO!Soft Comfort you can
transfer the old program to the new devices, however, you
cannot use the new functions in such programs. In such
cases you must upgrade to the current version.
You can only install the upgrade on a full version of
LOGO!Soft Comfort LOGO!Soft Comfort V1.0 or V2.0.
Upgrades & Infos
At our Internet URL
http://www.ad.siemens.de/logo/html_00/softcomfort.htm,
you can download the software upgrades and demo versions free of costs.
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7.1 Connecting the LOGO! to a PC
Connecting a PC cable
To connect the LOGO! to a PC you require the
LOGO!-to–PC link.
(Order no. 6ED1 057–1AA00–0BA0 ).
Remove the cover or the program module/Card of your
LOGO! and connect the cable. Connect the other end of
the cable to the serial port of your PC.
LOGO! to PC – PC
LOGO mode
There are two ways of communication between the PC and
the LOGO!. LOGO! to transfer mode in RUN state or automatically when the LOGO! power supply is switched on,
provided the link is plugged in.
This is how you switch the LOGO! to the mode
PC LOGO:
1. Switch the LOGO! to programming mode: In RUN
mode, press ESC and execute the menu item ’Stop’.
(see page 152)
2. Select ’PC/Card’:
per or
3. Confirm with OK
4. Select ’PC LOGO’:
per or
5. Confirm with OK
LOGO! is now in PC LOGO and displays:
PC
STOP:
Press ESC
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= LOGO!
169
LOGO! Software
This is how the LOGO! is switched automatically to mode
PC LOGO:
1. Switch off the power supply to LOGO!
2. Remove the cover or the program module/card and
connect the cable.
3. Switch on power.
LOGO! switches automatically to PC LOGO mode.
The PC can now communicate with the LOGO! See how
this is done directly in the Online Help of LOGO!Soft Comfort.
Use the ESC key on the LOGO! if you want to interrupt the
PC communication.
Note
If the program you have created in LOGO!Soft Comfort is
password protected, the ’PC LOGO’ function transfers
the program and the password to the LOGO! . The password prompt is switched on when the device exits the
transfer mode.
The upload of a password protected program created in
LOGO! is only possible after the correct password is entered in LOGO!Soft Comfort.
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8 Applications
We have provided a small collection of applications in this
manual to give you an impression of the versatile use of
LOGO!. . For these examples we have recorded once
again the original solution of the circuit diagram and
compared it with the LOGO! solutions.
You can find solutions for the following tasks:
page
Staircase or corridor lighting system . . . . . . . . . . . . . . . 172
Automatic door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Ventilation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Industrial gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Central controlling and monitoring of several
industrial gates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Luminous rows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Rainwater pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Other applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Note
The LOGO! applications are freely available to all our customers. The examples they contain are not binding and
are included to provide general information on the fields of
application for LOGO!. Customer–specific solutions may
be different.
The user undertakes to ensure proper operation of the
system. We refer to the standards and system–related
installation regulations of the respective country.
Errors are excepted and the right to make changes reserved.
These applications – as well as tips for other applications –
are also found at our Internet URL:
http://www.ad.siemens.de/logo
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Applications
8.1 Staircase or Corridor Lighting
8.1.1 Demands on a Staircase Lighting System
The basic requirements for a staircase lighting system are
as follows:
When someone is using the staircase, the lighting
should be switched on.
If no–one is in the staircase the lights should be
switched off in order to save energy.
8.1.2 Previous Solution
The two conventional options for switching the lights:
The pulse relay
The automatic staircase time switch
The wiring for these two lighting systems is identical.
ÎÎÎ ÎÎÎ
ÎÎÎ ÎÎÎ
Lights
Distribution box
Distribution per
Pulse relay
Switches
or
automatic
staircase
lighting switch
Components used
Switches
Automatic staircase time switch or pulse relay
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Applications
Lighting system with pulse relay
Function of a lighting system with pulse relay:
Actuate any pushbutton: The lighting is switched on
Actuate any of the pushbuttons once again: The lighting
is switched off.
Disadvantage: One often forgets to switch off the lights.
Lighting system with an automatic staircase time switch
When an automatic staircase time switch is used, the lighting system behaves as follows:
Actuate any pushbutton: The lighting is switched on
On expiration of the preset time the lights switch off automatically.
Disadvantage: The light cannot be switched on for a longer period of time (e.g. when cleaning the staircase). The
switch for continuous lighting is usually installed on the automatic staircase time switch that may be difficult or impossible to access.
8.1.3 Lighting System with LOGO!
With the LOGO! you can replace the automatic staircase
time switch or the pulse relay. You can also implement both
functions (timed off delay and pulse relay) in a single unit.
What is more, you can incorporate extra functions without
making any alterations to the wiring. Here are some examples:
Pulse relay with LOGO!
Automatic staircase time switch with LOGO!
Multifunctional switch with LOGO!
– Switch light on
– Switch on continuous lighting
– Switch light off
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Applications
Wiring of the lighting system with LOGO! 230 RC
ÏÏ
ÏÏ
ÏÏ ÏÏ
Lights
N
L
PE
L1 N I1 I2 II3
I3 II4
I1
I5
I3 I6 I7 I8
Switches
Q1
Q2
Q3
Q4
The external wiring of a lighting system with a LOGO! is no
different than it is for a conventional staircase and corridor
lighting system. Only the automatic staircase time switch/
pulse relay is replaced. Supplementary functions are entered directly in LOGO!.
Pulse relay with LOGO!
Switch:I1
x
Q1
Lights
Output Q1 is toggled with a gate pulse at input I1.
Automatic staircase time switch with LOGO!
Switch: I1
T
06:00m
Q1
Lights
Output Q1 is switched on for the duration of 6 minutes with
a gate pulse at input I1.
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Multifunctional switch with LOGO!
Switch: I1
TH / TL
Q1
Lights
Output Q1 is switched on for a specified time TH with a
gate pulse at input I1.
The continuous lighting function is enabled by holding
down the pushbutton for a specified time TL.
8.1.4 Special Features and Expansion Options
Other options for increasing comfort or saving energy are,
for example:
A flashing function that indicates that the light is about to
be switched off automatically.
You can integrate various central functions:
– Central off
– Central on (panic button)
– Control of all lamps or individual circuits via a daylight control switch
– Control via integrated timer switch
(e.g. continuous lighting only until 24.00 h; disabling
at specific times)
– Automatic off for the continuous lighting on expiration
of a preset time (e.g. after 3 hours)
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Applications
8.2 Automatic Door
You often find automatic door control systems at the entrance to supermarkets, public buildings, banks, hospitals
etc.
8.2.1 Demands on an Automatic Door
When somebody approaches the door, it must open automatically.
The door must remain open until the doorway is cleared.
When the doorway is cleared, the door must close automatically after a short time.
Outside
Motion detector
B1
ÑÑÑÑÑÌÌÌÌÌ
S1
Inside
Limit switch S2
closed
B2
Motion detector
Limit switch
open
Q1 Main switch
Motion detector
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
ÑÑÑÑÌÌÌÌ
Main switch
The door is usually motor–driven and equipped with a slip
coupling. This prevents people from being squeezed in and
injured. The control system is connected to the mains via a
master switch.
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8.2.2 Previous Solution
Auxiliary circuit
L1
S2
K3
S2
K3
B1
B2
S1
K2
K1
N
Open
K3
K4
Close
B1
B2
K1
K2
K3
K3
K4
Open door
Waiting time
When someone enters the detection range of the motion
sensors B1 or B2, the door is opened via K3.
After the detection range of the two motion sensors has
been cleared for a minimum period, K4 enables the closing
motion.
8.2.3 Door Control System with LOGO!
With LOGO! you can simplify this circuit considerably. What
is left to do is to connect the motion sensors, limit switches
and power contactors to the LOGO! .
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Applications
Wiring the door control system with LOGO! 230 RC
L1
S1
B1
L1 N
1
Q1
2
K1
I1 I2 I3 I4
1
S2
B2
Q2
2
I5 I6 I7
1
Q3
2
1
I8
Q4
2
K2
N
Open
Close
Components used
K1
K2
S1 (n.c. contact)
S2 (n.c. contact)
B1 (n.o. contact)
B2 (n.o. contact)
178
Main contactor Open
Main contactor Close
Limit switch Closed
Limit switch Open
Infrared motion detector outdoor
Infrared motion detector indoor
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Applications
Door Control System with LOGO! , Block Diagram
1
I1
I2
x
RS
Open
1
I4
x
Q1
I4
&
1
&
Q2
T=
4s
&
Q2
I3
1
Close
Q1
This is what the circuit diagram of the conventional solution
looks like.
You can simplify this circuit if you make use of the LOGO!
functions. You can use the off delay to replace the latching
relay and the on delay. The block diagram below illustrates
this simplification:
Motion detector
1
I1
I2
x
&
Q2
Q1
Open
x
10 s
Limit switch
I4
Door open
1
&
Limit switch
Door closed
Q2
I3
Close
1
Q1
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Applications
8.2.4 Special Features and Expansion Options
Options for increasing comfort and user friendliness are, for
example:
You can connect an additional control switch with the
positions: Open – Automatic – Closed (O-A-C)
You can connect a buzzer to an output of the LOGO! to
warn of the closing of the door.
You can implement time and direction dependent enable
functions for opening of the door (e.g. opening only during business hours; after business hours to be opened
only from inside).
8.2.5 Enhanced solutions with LOGO! 230 RC
Wiring the LOGO! expansion
L1
B1
B2
L1 N
1
Q1
S1
S2
I1 I2 I3 I4
2
K1
1
Q2
K2
2
S3
I5 I6 I7
1
Q3
2
1
O-A-C
I8
Q4
2
H1
N
Open
180
Close
Buzzer
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Applications
Block diagram of the enhanced LOGO! solution
Cam1:
Day= Mo..Fr
On = 09:00
Off =18:00
Cam 2:
Day= Sa
On = 08:00
Off =13:00
Detecting motion
x
x
I1
Motion detector B1
x
T= 10 s
Cam1:
Day= Mo..Fr
On = 09:00
Off =19:00
Cam 2:
Day= Sa
On = 08:00
Off =14:00
x
I2
Motion detector B2
Motor for opening
Close output
Q2
Q1
Open
x
Limit switch
Door open
Control switch
Door open
I4
I5
Motor for closing
Limit switch
Door closed
I3
Open output
Motion detector B1
Motion detector B2
Q1
I1
I2
Control switch
Close door
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A5E00119092-01
x
Q2
Close
I6
181
Applications
Detecting motion
During business hours, the motion detector B1 initiates the
opening of the door as soon as somebody wants to enter
the shop from outside. Motion detector B2 initiates the
opening of the door if somebody wants to leave the shop.
After closing time, the motion detector B2 continues to be
used to open the door for 1 hour to allow the customers to
leave the shop.
Motor for opening
Output Q1 is switched on to open the door when the following occurs:
The control switch at 15 is operated (the door is to be
constantly open) or
The motion detectors indicate that somebody is approaching the door and
The door is not yet fully open (limit switch at I4).
Motor for closing
Output Q2 is switched on to close the door when the following occurs:
The control switch at 16 is operated (the door is to be
constantly closed) or
The motion detectors indicate that there is nobody near
the door and
The door is not yet fully closed (limit switch at I3).
Buzzer
Connect the buzzer to output Q3. The buzzer sounds for a
short time (in this case 1 second) when the door is closed.
Enter the following circuit at Q3 in the block diagram:
Q2
Close output
x
Q3
Buzzer
T= 1 s
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8.3 Air–conditioning System
8.3.1 Demands on an air–conditioning System
The air–conditioning system is used for the controlled supply of fresh air to a room and to exhaust the contaminated
air in the room. Let us examine following example:
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Fresh–air fan
Flow sensor
Flow sensor
Exhaust fan
The room is equipped with an exhaust fan and a fresh–
air fan.
Both fans are monitored by a flow sensor.
The pressure in the room must not be allowed to rise
above the atmospheric pressure.
The fresh–air fan must only be switched on if reliable
functioning of the exhaust fan is signaled by the flow
sensor.
A warning lamp indicates if one of the fans fails.
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Applications
The circuit diagram for conventional solutions is as follows:
Auxiliary circuit
L1
S0
S1
K1
K2
K5
K4
K5
S2
S2 v>
K1
N
S3 v>
K2
K3
K4
Exhaust air
H1
K5
Operation
Fresh air
H2
Error
The fans are monitored by flow sensors. If, after a short
delay, no air flow is measured the system is switched off
and an error is reported. Acknowledge this by pressing the
off pushbutton.
Fan monitoring requires an evaluation circuit with several
switching devices in addition to the flow sensors. The evaluation circuit can be replaced by a single LOGO! unit.
Wiring the air–conditioning system with LOGO! 230 RC
L1
S1
S0
S2 v>
L1 N I1 I2 I3 I1
I4
1
N
Q1
K1
2
1
Q2
K2
S3 v>
I3
I5 I6 I7 I8
2 1
Q3
H1
2 1
Q4
2
H2
Exhaust Fresh–air
fan
fan
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Components used
K1
K2
S0 (n.c. contact)
S1 (n.o. contact)
S2 (n.o. contact)
S3 (n.o. contact)
H1
H2
Main contactor
Main contactor
STOP pushbutton
Start pushbutton
Flow sensor
Flow sensor
Indicator lamp
Indicator lamp
Circuit diagram of the LOGO! solution
This is what the circuit diagram of the air–conditioning system looks like with a LOGO! :
On
I1
Error
Q3
Q1
Exhaust
fan
x
Off
I2
Exhaust fan
Q1
x
Exhaust fan
Exhaust air
flow sensor
Q1
Exhaust air flow
sensor
x
I3
Exhaust fan
I3
Q2
Fresh–air
fan
x
T=
10 s
Q2
x
x
Fresh–air flow
sensor
I4
x
T= 10 s
Off
LOGO! Manual
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I2
Q3
Error
185
Applications
8.3.2 Advantages of Using LOGO!
When using the LOGO!, you require less switchgear. That
saves you installation time and space in the control cabinet.
You might even be able to use a smaller control cabinet.
Additional options when using LOGO!
The free output (Q4) can be used as a potential–free
contact for signaling a fault or a power failure.
It is possible to switch off of the fans via sequential circuit.
These functions can be incorporated without additional
switchgear.
Block diagram of the enhanced LOGO! solution
The fans at Q1 and Q2 are switched on and off as shown in
the following circuit:
On
I1
Fault
Q3
Q1
Exhaust
fan
I2
Off
T=
30 s
x
Exhaust air flow
sensor
I3
x
x
T=
10 s
Q1 exhaust fan
Exhaust air flow
sensor
I3
Q2
Fresh–air
fan
x
T=
10 s
x
Q2 exhaust fan
x
Fresh–air flow
sensor
I4
T=
10 s
Off
186
I2
Q3
Error
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Applications
You can also generate a message at output Q4:
Q3
Error
Q4
Message
The relay contacts of output Q4 are always closed when
the system is in operation. Relay Q4 does not drop unless
there is a power failure or a fault in the system. This contact can be used for remote messaging, for example.
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Applications
8.4 Industrial Gate
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
Safety pressure bar
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
ÔÔ
Warning
light
The entrance to a company’s premises is often closed with
a gate. The gate is only opened to let vehicles in and out.
The gate is controlled by the gateman.
8.4.1 Demands on the Gate Control System
The gate is opened and closed by operating a pushbutton in the gatehouse. The gateman can monitor the operation of the gate at the same time.
The gate is normally fully opened or closed. However,
the gate motion can be interrupted at any time.
A flashing light is activated 5 seconds before the gate
begins to move and continues for as long as the gate is
in motion.
A safety pressure bar prevents harm to persons and
objects from getting trapped or damaged when the gate
closes.
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8.4.2 Previous Solution
Diverse kinds of control systems are used to operate automatic gates. The gate control circuit diagram shows one
option.
Auxiliary circuit
L1
S0
S1
K1
S2
K3
K1
K3
S2
S1
S5 p>
K3
S5 p>
K1
S3
K2
S4
K1
N
K2
K4
K6
K3
K4
Open
K5
H1
Flashing light
Close
K5
K6
Open Close
Wiring the gate controls with LOGO! 230 RC
L1
S3
S4
p>
S5
S0
Stop
S1
Open S2
Close
L1 N
1
Q1
I1
2
I2
1
I3 I4
Q2
2
I5
1
Q3
2
I6
I7
1
I8
Q4
2
S5 p>
N
K1
Open
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A5E00119092-01
K3
H1
Close
Flashing light
189
Applications
Components used
K1
K2
S0 (n.c. contact)
S1 (n.o. contact)
S2 (n.o. contact)
S3 (n.c. contact)
S4 (n.c. contact)
S5 (n.c. contact)
Main contactor
Main contactor
STOP pushbutton
Open switch
CLOSE pushbutton
OPEN position switch
CLOSED position switch
Safety pressure bar
Block diagram of the LOGO! solution
Q2
Start pushbutton
CLOSE
I2
Start pushI1
button
OPEN
STOP pushI3
button
Gate is open I4
x
T=
5s
Q1
Open
x
T=
2s
CLOSE pushbutton
Q1
Q3
Flashing
light
x
CLOSE pushbutton
I2
OPEN pushbutton
I1
T=
5s
Q2
Close
x
STOP pushbutton
Safety bar
I3
I6
Gate is closed
I5
The OPEN or CLOSE start switches initiate the gate’s motion in the appropriate direction provided it is not already
moving in the other direction. The gate’s motion is halted
via the STOP pushbutton or the relevant limit switch. Closing of the gate is also interrupted by the safety bar.
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8.4.3 Wiring the LOGO! solution
In our enhanced solution the gate will automatically open
again when the safety bar is operated.
Safety bar
I6
x
Q2
STOP pushbutton
Gate is open
x
x
I3
Q1
Open
I4
T=
5s
Q2
x
OPEN pushbutton I1
T=
2s
Q1
Q3
Flashing
light
x
CLOSE pushbutton
I2
STOP pushbutton
I3
Safety bar
I6
Gate is closed
I5
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A5E00119092-01
T=
5s
Q2
Close
191
Applications
8.5 Centralized Control and Monitoring of
Several Industrial Gates
1
1
1
1 Safety pressure bar 2
flashing warning light
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
2
–+
FM
ASi
2
–+
Master
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
Ô
FM
ASi
2
–+
FM
ASi
Often, a company’s premises can be entered at several
locations. Not all of the gates can always be monitored locally by personnel. They must therefore be able to be monitored and operated by the gateman who sits in a central
gatehouse.
It must also be possible for a member of staff to open and
close the gate locally.
For every gate we implement one LOGO! 230 RC and one
AS interface function module. The bus interconnects the
modules and the master.
In this chapter, we will describe a gate control system. The
structure of the other gate control systems is identical.
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8.5.1 Demands on the Gate Control System
Every gate is opened and closed by means of a cord–
operated switch. The gate is here fully opened or
closed.
Every gate can also be opened and closed per local
pushbutton.
The gate can be opened and closed via the bus link to
the gatehouse. The GATE OPEN or GATE CLOSED
status is indicated.
A flashing light is activated 5 seconds before the gate
begins to move and continues for as long as the gate is
in motion.
A safety pressure bar prevents harm to persons and
objects from getting trapped or damaged when the gate
closes.
Wiring the gate controls with LOGO! 230 RC and FM ASi
L1
p>
S0
L1
N
S1
I1
S2 S3
I2
I3
S4
I4
S5
I5
S6
I6
I7
I8
–
+
AS interface
FM ASi
1
2
1
Q1
2
Q2
1
2
Q3
1
2
Q4
p>
S6
K1
K2
N
Gate
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Gate
Flashing
193
Applications
Components used
K1
K2
S0 (n.o. contact)
S1 (n.o. contact)
S2 (n.o. contact)
S3 (n.o. contact)
S4 (n.c. contact)
S5 (n.c. contact)
S6 (n.c. contact)
Main contactor for opening
Main contactor for closing
Cord–operated switch OPEN
Cord–operated switch CLOSE
Open switch
CLOSE pushbutton
OPEN GATE position switch
CLOSE GATE position switch
Safety pressure bar
Higher–level control system
Q5
OPEN GATE position switch
Q6
CLOSE GATE position switch
I9
External OPEN GATE pushbutton
I10
External CLOSE GATE pushbutton
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Block diagram of the LOGO! solution
I5
I1
I9
Gate is open
&
1
Gate open
Gate open
1
x
Q1
x
x
I5
Gate is open
I3
I5
Open gate by hand
Gate is open
T
05.00s
Gate
open
&
x
I4
I6
I7
I6
1
&
=1
Q2
T
05.00s
Gate is closed
Gate
closed
&
I2Closed 1
I10
x
I7
Safety bar
Gate is closed
Safety bar
x
I5
x
x
Closed
I6
I7
&
Close gate by hand
Gate is closed
Safety bar
Gate is open
1
&
Q3
x
T
02.00s
Flashing
light
Q5
Open
Closed
I6
Gate is closed
Q6
The OPEN GATE and CLOSE GATE start pushbuttons
move the gate in the appropriate direction provided it is not
already moving in the other direction. The gate motion ends
at the respective limit switch. Closing of the gate is also
interrupted by the safety bar.
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Applications
8.6 Luminous rows
ÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
É
ÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
É
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉ
ÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Luminous rows 1
Luminous rows 2
Luminous rows 3
Luminous rows 4
Office
Corridor
When planning lighting systems for commercial locations,
the type and number of lamps used is determined by the
illuminance required. For reasons of cost efficiency, fluorescent tubes arranged in luminous rows are often used. They
are divided into separate switching circuits, according to
the way the room is used.
8.6.1 Demands on the Lighting System
These separate luminous rows are switched on and off
locally.
If there is sufficient daylight, the rows on the window
side of the room are automatically switched off via daylight control switch.
The lights are switched off automatically at 20.00.
It must be possible at all times to switch the lights on
and off locally.
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8.6.2 Previous Solution
L1
lx>
B1
E1
K1
K1
K2
S1
S2
K3
K4
K2
S3
S4
K3
K4
K5
K6
K5
K6
E2
E3
E4
E5
E1
K2
N
The lamps are switched on and off with a pulse relay that is
controlled per pushbuttons at the door. Regardless of this,
they are reset by the time switch or by the daylight control
switch via the central off input. The length of the off commands must be reduced per wiping relays in order to make
it possible to switch the lights on and off locally after they
have been switched off.
Components required:
Switches S1 to S4
Daylight control switch B1
Timer switch E1
Wiping relays K1 and K2
Pulse switches with central off K3 to K6
Disadvantages of the previous solution
A substantial amount of switchgear is required in order
to implement these functions.
Due to the high proportion of mechanical components,
high wear and tear and maintenance expenditure is to
be expected.
Changing the function demands considerable efforts.
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Applications
8.6.3 Luminous row control with LOGO! 230 RC
L1
S1
S2
S3
lx<
S4
B1
L1 N I1
1
Q1
2
E2
I2
1
I3
Q2
I1
I4
2
E3
I3
I5
1
Q3
I6
2
E4
I7
1
I8
Q4
2
E5
N
Luminous
row 1
Luminous
row 2
Luminous
row 3
Components used
S1 to S4 (n.o. contact)
B1 (n.o. contact)
198
Luminous
row 4
Switches
Daylight control switch
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Applications
Block diagram of the LOGO! solution
Off pulse generated via timer switch
Mo..Su
20:00 – 20.01
Mo..Su
21:00 – 21.01
T=
1s
I3
Luminous
row 3
Corridor side
Q3
I4
Luminous
row 4
Corridor side
Q4
I1
Luminous
row 1
Window side
Q1
I2
Luminous
row 2
Window side
Q2
x
Off pulse generated via daylight control switch
Daylight control switch I5
T=
1s
x
I5
x
x
Advantages of the LOGO! solution
You can connect the lamps directly to the LOGO!, provided the power consumption of the individual outputs
does not exceed its switching capacity. If higher loads
must be switched you should use a power contactor.
Connect the daylight control switch directly to an input of
the LOGO! .
You do not need an external timer switch, because this
function is integrated in the LOGO! .
Due to the reduced amount of switchgear, you can
install a smaller and space–saving subsidiary distribution cabinet.
Fewer devices are required
The lighting system can be easily modified.
Additional switching times can be set as required (sequential circuit for the off pulses at the end of the day).
The function of the daylight control switch can easily be
applied to all lamps or modified group of lamps.
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Applications
8.7 Service water pump
The use of rainwater as an addition to the drinking water
supply is gaining importance in the domestic housing area.
This saves money and helps protect the environment. For
example, rainwater can be used for:
Washing clothes
Irrigation system for gardens
Watering indoor plants
Car wash
Toilet flushing installations
The sketch below illustrates how such a rainwater utilization system is operated:
Rainwater
supply line
K4
Drinking water supply line
ÎÎÎ
ÎÎÎ
ÎÎÎ
ÕÕÕ
ÎÎÎ
ÕÕÕ
ŠŠÕÕÕ
ŠŠ
Pressure switch
S1
Control in the
distribution box
Pump
M1
Rainwater
reservoir
S2
S3
S4
Pressure tank
Service water
connection
Drinking water supply Off
Drinking water supply On
Dry–run protection Off
Dry–run protection On
The rainwater is collected in a reservoir. From the reservoir
a pumping station supplies a respective line system. From
there it can be tapped in the same way as normal drinking
water. If the reservoir should run dry it can be topped up
with drinking water.
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Applications
8.7.1 Demands on the control system of a service
water pump
The system must be capable of supplying service water
at all times. In case of emergency, the control system
must automatically switch over to drinking water supply.
When switching over to the drinking water supply an
ingress of rainwater into the mains system must be prevented.
The service water pump must not be switched on if rainwater is low in the reservoir (dry–run protection).
8.7.2 Previous Solution
Auxiliary circuit
L1
K3
S3
S1 p<
K2
K1
N
Pump
K2
S4
S2
K3
K3
Tracking time Dry–run
protection
S3
K4
K4
Y1
Pure water
supply line
The pump and a solenoid valve are controlled by means of
a pressure switch and 3 float switches installed in the rainwater reservoir. The pump must be switched on when the
pressure level in the cylinder drops below minimum. Once
the operating pressure has been reached, the pump is
switched off again after a tracking time of a few seconds.
The tracking time prevents an oscillation of the water pump
if water is drawn off over any length of time.
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Applications
8.7.3 Service water pump with LOGO! 230 RC
L1
S1
p<
L1 N
S3
S2
I1
I2
I3
1 Q1 2
1 Q2 2
K1
Y1
I4
S4
I5
1 Q3 2
I6
I7
I8
1 Q4 2
N
Pump
Drinking water supply line
Apart from the LOGO!, all you need is a pressure switch
and the float switches to control the pump. If you are using
a 3–phase AC motor, you must use a power contactor for
switching the pump. For single–phase AC pump systems
you must provide a contactor if the current consumption of
the AC motor exceeds the capacity of the output relay Q1.
The power of a solenoid valve is low enough to allow direct
controlling.
K1
Main contactor
Y1
Solenoid valve
S1 (n.o. contact) Pressure switch
S2 (n.o. contact) Float switch
S3 (n.c. contact) Float switch
S4 (n.c. contact) Float switch
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Circuit diagram of the LOGO! solution
Pressure
switch
I1
x
T = 20 s
x
Pump
Q1
Float switch for dry–
I3
run protection Off
Float switch for dry–
I4
run protection On
Float switch for drinI3
king water supply
Off
Float switch for drinking water supply Off
Drinking water
supply line
Q2
I2
8.7.4 Special Features and Expansion Options
The circuit diagram shows how you can wire the pump controls and the solenoid valve. The layout corresponds to that
of the circuit diagram. You also have the option to integrate
further functions for specific applications that could otherwise only be realized in conventional technology under
additional expenditure of switchgear, e.g.:
Enabling the pump at specific times
Indication of imminent or existing shortage of water
Reporting of system faults
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Applications
8.8
Further Application options
Apart from the shown samples, we have also published a
collection of applications on the web (www.ad.siemens.de/
logo/html_00/application.htm).
There you can find amongst other things:
Irrigation system for greenhouse plants
Controlling of conveyor systems
Controlling of a bending machine
Shop window lighting
Bell system (e.g. in a school)
Parking lot surveillance
Outdoor lighting
Control system for shutters
Domestic outdoor and indoor lighting
Control system for a cream stirrer
Sports hall lighting
Constant load on 3 consumers
Sequential control system for cable–welding machines
for large cross–sections
Step switch (e.g. for fans)
Sequential control for a boiler
Control system for several pump sets with centralized
operation
Cutting device (e.g. for detonating fuses)
Monitoring periods of utilization, e.g. of a solar energy
system
Intelligent foot switches, e.g. for speed preselection)
Controlling an elevating platform
Impregnation of textiles; controlling the heating and conveyor belts
Silo–filling system
And lots more.
204
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Applications
On the Web you can also find descriptions and the corresponding circuit diagrams of the applications. You can read
these *.pdf files with the Adobe AcrobatReader. And if you
have installed the LOGO!Soft or LOGO!Soft Comfort programming software on your PC, you can simply download
the relevant circuit diagrams at the touch of a button, adapt
them to your requirements, transfer them into LOGO! via
the PC cable and start to use them .
Advantages of using LOGO!
The use of LOGO! is highly beneficial, especially in areas
in which you can use the LOGO! to replace multiple
auxiliary switchgear with the integrated functions,
where you want to economize wiring and installation
efforts – because LOGO! keeps the wiring ”in its head”.
where you want to reduce component space in the control cabinet/distribution – you might even be able to reduce the size of your control cabinet/distribution box.
in which you can add or change functions subsequently,
without having to install an additional switchgear or
change the wiring.
where you want to offer your customers additional functions for domestic and commercial housing installation.
Examples:
– Domestic security systems: With LOGO! to switch a
lamp on regularly or open and close your shutters
while you are on holiday.
– Central heating: With LOGO! run the circulation
pump only when you actually require water or heating.
– Refrigerating systems: With LOGO! defrost your refrigerating systems at regular intervals; this is more
lenient on energy costs.
– you can illuminate aquaria and terraria on a time–dependent basis.
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Applications
Last not least you can:
Use commonly available switches and pushbuttons,
which makes it easy to install a domestic system.
LOGO! directly to your house installation; the integrated
power supply makes it possible.
Do you want more Info?
You can find more info relating to the topic LOGO! on our
Internet site: http://www.ad.siemens.de/logo.
Do you have any suggestions?
There are definitely many more useful applications for the
LOGO! . If you know of one, why not write to us? We will
collect all the suggestions made and distribute as many of
them as we can. It does not matter how unusual or simple
your LOGO! might be. Just write to us. We shall be delighted to receive all your suggestions.
Write to:
Siemens AG
A&D AS MVM – LOGO!
PO–Box 48 48
D–90327 Nuremberg
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A Technical Data
A.1 General Technical Data
Criterion
Complies with
Values
LOGO!Basic:
Dimensions (WxHxD)
72 x 90 x 55 mm
Weight
Approx. 190 g
Installation
on a 35 mm profile rail
4 module widths
or wall mounting
LOGO! Expansion module:
Dimensions (WxHxD)
36 x 90 x 55 mm
Weight
Approx. 90 g
Installation
on a 35 mm profile rail
4 module widths
or wall mounting
Climatic environmental conditions
Ambient temperature
Horizontal installation
Vertical installation
Cold:
IEC 60068-2-1
Heat:
IEC 60068-2-2
IEC 60068-2-30
Air pressure
Pollutants
0 ... 55 °C
– 40 °C ... +70 °C
Storage/transport
Relative humidity
0 ... 55 °C
C
From 10 to 85 %
no condensation
795 ... 1080 hPa
IEC 60068-2-42
SO2 10 cm3 /m3, 4 days
IEC 60068-2-43
H2S 1 cm3 /m3, 4 days
Mechanical environmental conditions
Type of protection
Vibrations:
IP20
IEC 60068-2-6
5 ... 9 Hz (constant amplitude 3.5 mm)
9 ... 150 Hz (constant acceleration 1 g)
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Technical Data
Criterion
Complies with
Values
Shock
IEC 60068-2-27
Drop
IEC 60068-2-31
18 shocks
(Half–sine wave
15g/11 ms)
Drop height 50 mm
Free fall (packaged)
IEC 60068-2-32
1m
Electromagnetic compatibility (EMC)
Interference emission
EN 55011
Limit class B group 1
Limit class for ASi operation
Electrostatic discharge
IEC 61000-4-2
8 kV air discharge
Severity 3
6 kV contact discharge
Electromagnetic fields
IEC 61000-4-3
Field strength 10 V/m
HF conductance on cables
and cable shields according
IEC 61000-4-6
10 V
Burst pulses
IEC 61000-4-4
2 kV (supply and signal
lines)
Severity 3
Energy carriers
IEC 61000-4-5
Single pulse (surge)
Severity 2
0.5 kV (power lines)
symmetrical
1 kV (power lines) asymmetrical
(applies only to LOGO! 230 ...
Information on IEC – / VDE – safety
Measurement of clearance
and creepage distance
IEC 60664,
Fulfilled
IEC 61131-2,
EN 50178 UL 508,
CSA C22.2 No.142
With LOGO!
230 R/RC also
VDE 0631
Insulation strength
IEC 61131-2
208
Fulfilled
LOGO! Manual
A5E00119092-01
Technical Data
A.2 Technical Data: LOGO! 230... and
LOGO! DM8 230R
LOGO! 230 RC
LOGO! 230 RCo
LOGO! DM8 230R
Input voltage
115/240 V AC/DC
115/240 V AC/DC
Permissible range
85 ... 253 V AC
85 ... 253 V DC
85 ... 253 V AC
85 ... 253 V DC
Permissible mains frequency
47 ... 63 Hz
47 ... 63 Hz
115 V AC
10 ... 30 mA
10 ... 30 mA
240 V AC
10 ... 20 mA
10 ... 20 mA
115 VDC
5 ... 15 mA
5 ... 15 mA
240 V DC
5 ... 10 mA
5 ... 10 mA
Power supply
Power consumption
Voltage failure buffering
115 V AC/DC
240 V AC/DC
typ
typ.
y 10 ms
typ
typ.
y 10 ms
typ. 20 ms
typ
typ. 20 ms
typ
115 V AC
1.1 ... 3.5 W
1.1 ... 3.5 W
240 V AC
2.4 ... 4.8 W
2.4 ... 4.8 W
115V DC
0.5 ... 1.8 W
0.5 ... 1.8 W
240 V DC
1.2 ... 2.4 W
1.2 ... 2.4 W
Power loss at
Buffering the clock at 25 C
typ. 80h
Accuracy of the real–time
clock
max. 5 s / Tag
Digital inputs
Number
8
4
Electrical isolation
No
No
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Technical Data
LOGO! 230 RC
LOGO! 230 RCo
LOGO! DM8 230R
Signal 0
< 40 V AC
< 40 V AC
Signal 1
> 79 V AC
> 79 V AC
Signal 0
< 30 V AC
< 30 V AC
Signal 1
> 79 V AC
> 79 V AC
< 0.03 mA
< 0.03 mA
>0
0.08
08 mA
>0
0.08
08 mA
0 to 1
1 to 0
typ.
y 50 ms
typ.
y 50 ms
typ. 50 ms
typ. 50 ms
Line length (unshielded)
100 m
100 m
Number
4
4
Output type
Relay outputs
Relay outputs
Electrical isolation
Yes
Yes
In groups of
1
1
Activation of digital input
Yes
Yes
Continuous current Ith
max. 10 A per relay
max. 10 A per relay
and max. 20 A
across all 4 relays
230/240 V
1000 W
1000 W
115/120 V
500 W
500 W
Fluorescent tubes with choke
(25,000 switching cycles)
10 x 58 W (at
230/240 V AC)
10 x 58 W (at
230/240 V AC)
Input voltage L1
Input current at
Signal 0
Signal 1
Delay time at
Digital outputs
Incandescent lamp load
(25,000 switching cycles) at
210
LOGO! Manual
A5E00119092-01
Technical Data
LOGO! 230 RC
LOGO! 230 RCo
LOGO! DM8 230R
Fluorescent tubes, conventionally compensated (25,000
switching cycles)
1 x 58 W (at
230/240 V AC)
1 x 58 W (at
230/240 V AC)
Fluorescent tubes, uncompensated (25,000 switching
cycles)
10 x 58 W (at
230/240 V AC)
10 x 58 W (at
230/240 V AC)
Short circuit–proof cos 1
Power protection
B16
600A
Power protection
B16
600A
Short–circuit proof cos 0.5 to
0.7
Power protection
B16
900A
Power protection
B16
900A
Derating
none; across the total temperature
range
none; across the total temperature
range
Parallel switching of outputs
to increase power
Not permitted
Not permitted
Protection of output relay (if
desired)
max. 16 A,
characteristic B16
max. 16 A,
characteristic B16
Mechanical
10 Hz
10 Hz
Ohmic load/lamp load
2 Hz
2 Hz
Inductive load
0.5 Hz
0.5 Hz
Switching rate
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Technical Data
A.3 Technical Data: LOGO! 24... and
LOGO! DM8 24
LOGO! LOGO! 24
DM8 24
LOGO! 24 RC (AC)
LOGO! 24 RCo
(AC)
Input voltage
24 V DC
24 V AC
Permissible range
20.4 ... 28.8 V DC
20.4 ... 26.4 V AC
Reverse polarity protection
Yes
Power supply
Permissible mains frequency
Power consumption from 24
V DC
47 ... 63 Hz
LOGO! 24
10 ... 25 mA
120 ... 20 mA
LOGO! DM8 24
30 ... 45 mA
0.3 A per output
Voltage failure buffering
Power loss at 24 V
typ. 5 ms
LOGO!24
0,2 ... 0,6 W
0.5 ... 2.9 W (AC)
LOGO! DM8 24
0.8 ... 1.1 W
Buffering the clock at 25 C
typ. 80h
Accuracy of the real–time
clock
max. 5 s / Tag
Digital inputs
Number
LOGO! 24:
8
LOGO! DM8 24: 4
8
Electrical isolation
No
No
Input voltage
L+
L
Signal
g
0
Signal 1
< 5 V DC
< 5 V AC
> 8 V DC
> 12 V AC
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Technical Data
LOGO! LOGO! 24
DM8 24
LOGO! 24 RC (AC)
LOGO! 24 RCo
(AC)
Signal 0
< 1.0 mA (I1...I6)
< 0.05 mA (I7,
( , I8))
< 1.0 mA
Signal 1
> 1.5 mA (I1... I6)
> 0.1 mA (I7, I8)
> 2.5 mA
typ. 1.5 ms (I1...I4)
typ. 1.5 ms
Input current at
Delay time at
0 to 1
<1.0 ms (I5, I6)
y 300 ms (I7,I8)
(
)
typ.
1 to 0
typ. 1.5 ms (I1...I4)
typ. 15 ms
<1.0 ms (I5, I6)
typ. 300 ms (I7,I8)
Line length (unshielded)
100 m
100 m
Analog inputs
Number
only LOGO! 24:
2 (I7 and I8)
Range
0 ... 10 V DC
max. Input voltage
28,8 V DC
Digital outputs
Number
4
4
Output type
Transistor,
current–sourcing
Relay outputs
Electrical isolation
No
Yes
In groups of
1
Activation of digital input
Yes
Output voltage
Supply voltage
Output current
max. 0.3 A
Continuous current Ith
LOGO! Manual
A5E00119092-01
Yes
max. 10 A
213
Technical Data
LOGO! LOGO! 24
DM8 24
LOGO! 24 RC (AC)
LOGO! 24 RCo
(AC)
Incandescent lamp load
(25,000 switching cycles) at
1000 W
Fluorescent tubes with choke
(25,000 switching cycles)
10 x 58 W
Fluorescent tubes, conventionally compensated (25,000
switching cycles)
1 x 58 W
Fluorescent tubes, uncompensated (25,000 switching
cycles)
10 x 58 W
Short circuit–proof and overload–proof
Yes
Short–circuit current limitation
Approx. 1 A
Derating
none; across the total temperature
range
none; across the total temperature
range
Short circuit–proof cos 1
Power protection
B16
600A
Short–circuit proof cos 0.5 to
0.7
Power protection
B16
900A
Parallel switching of outputs
to increase power
Not permitted
Protection of output relay (if
desired)
Not permitted
max. 16 A,
characteristic B16
Switching rate
Mechanical
10 Hz
Electrical
10 Hz
Ohmic load/lamp load
10 Hz
2 Hz
Inductive load
0.5 Hz
0.5 Hz
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Technical Data
A.4 Technical Data: LOGO! 12/24... and
LOGO! DM8 12/24R
LOGO! LOGO!
12/24 RC LOGO!
LOGO! DM8
12/24R
Input voltage
12/24 V DC
12/24 V DC
Permissible range
10.8 ... 15.6 V DC
20.4 ... 28.8 V DC
10.8 ... 15.6 V DC
20.4 ... 28.8 V DC
Reverse polarity protection
Yes
Yes
10 ... 100 mA
30 ... 100 mA
10 ... 75 mA
30 ... 75 mA
typ. 2 ms
typ. 2 ms
typ. 5 ms
typ. 5 ms
0.1 ... 1.2 W
0.4 ... 1.2 W
0.2 ... 1.8 W
0.8 ... 1.8 W
Power supply
Power consumption
12 V DC
24 V DC
Voltage failure buffering
12 V DC
24 V DC
Power loss
12 V DC
24 V DC
Buffering of the clock at 25 C typ. 80h
Accuracy of the real–time
clock
max. 5 s / day
Electrical isolation
No
No
Number
8
4
Electrical isolation
No
No
< 5 V DC
< 5 V DC
> 8 V DC
> 8 V DC
Digital inputs
Input voltage L+
Signal
g
0
Signal 1
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Technical Data
LOGO! LOGO!
12/24 RC LOGO!
LOGO! DM8
12/24R
Signal 0
< 1.0 mA (I1...I6)
< 0.05 mA (I7, I8)
< 1.0 mA
Signal
Si
l1
> 1.5
1 5 mA
A (I1...
(I1 I6)
> 0.1 mA (I7, I8)
> 1.5 mA
typ. 1.5 ms
typ. 1.5 ms
Input current at
Delay time at
0 to 1
<1.0 ms (I5, I6)
y 300 ms (I7,I8)
(
)
typ.
1 to 0
typ. 1.5 ms
typ. 1.5 ms
<1.0 ms (I5, I6)
typ. 300 ms (I7,I8)
Line length (unshielded)
100 m
100 m
Analog inputs
Number
2 (I7, I8)
Range
0 ... 10 V DC
max. Input voltage
28,8 V DC
Digital outputs
Number
4
4
Output type
Relay outputs
Relay outputs
Electrical isolation
Yes
Yes
In groups of
1
1
Activation of digital input
Yes
Yes
max. 10 A per relay
max. 10 A per relay
and max. 20 A
across all 4 relays
Output voltage
Output current
Continuous current Ith (per
terminal)
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Technical Data
LOGO! LOGO!
12/24 RC LOGO!
LOGO! DM8
12/24R
Incandescent lamp load
(25,000 switching cycles) at
1000 W
1000 W
Fluorescent tubes with choke
(25,000 switching cycles)
10 x 58 W
10 x 58 W
Fluorescent tubes, conventionally compensated (25,000
switching cycles)
1 x 58 W
1 x 58 W
Fluorescent tubes, uncompensated (25,000 switching
cycles)
10 x 58 W
10 x 58 W
Derating
none; across the total temperature
range
none; across the total temperature
range
Short circuit–proof cos 1
Power protection
B16
600A
Power protection
B16
600A
Short–circuit proof cos 0.5 to
0.7
Power protection
B16
900A
Power protection
B16
900A
Parallel switching of outputs
to increase power
Not permitted
Not permitted
Protection of output relay (if
desired)
max. 16 A,
characteristic B16
max. 16 A,
characteristic B16
10 Hz
10 Hz
Ohmic load/lamp load
2 Hz
2 Hz
Inductive load
0.5 Hz
0.5 Hz
Short circuit–proof and overload–proof
Short–circuit current limitation
Switching rate
Mechanical
Electrical
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Technical Data
A.5 Technical Data: LOGO! AM 2
LOGO! AM 2
Power supply
Input voltage
12/24 V DC
Permissible range
10.8 ... 15.6 V DC
20.4 ... 28.8 V DC
Power consumption
25 ... 50 mA
Voltage failure buffering
typ. 5 ms
Power loss at
12 V
24 V
0.3 ... 0.6 W
Electrical isolation
No
Reverse polarity protection
Yes
Ground terminal
for connecting ground and shielding of
the analog measuring line.
0.6 ... 1.2 W
Analog inputs
Number
2
Type
Unipolar
Input range
0–10 V or 0–20 mA
Resolution
10 bit, standardized to 0–1000
Cycle time for analog value
generation
50 ms
Electrical isolation
No
Line length (shielded and
twisted)
10m
Encoder supply voltage
none
Error limit
+/– 1.5 %
Interference frequency suppres- 55 Hz
sion
218
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Technical Data
Switching capacity and service life of the relay outputs
Ohmic load
Switching cycles/million
12/24 V AC/DC
115/120 V AC
230/240 V AC
0.5
0.4
Maximum 10 A
Maximum 10 A
Maximum 10 A
0.3
0.2
0.1
2
4
6
8
10
Switched current/A
Figure A Switching capacity and service life of the contacts at ohmic load
(heating)
Inductive load
Switching cycles/million
12/24 V AC/DC
115/120 V AC
230/240 V AC
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1
2
Maximum 2 A
Maximum 3 A
Maximum 3 A
3
Switched current/A
Figure B Switching capacity and service life of the contacts at highly inductive load to IEC 947-5-1 DC 13/AC 15 (contactors, solenoid coils,
motors)
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Technical Data
A.6 Technical Data: LOGO!Power 12 V
LOGO! Power 12 V is a switched–mode primary power
supply unit for LOGO! devices. Two current intensities are
available.
LOGO! Power
12 V / 1.9 A
LOGO! Power
12 V / 4.5 A
Input data
Input voltage
120 ... 230 V AC
Permissible range
85 ... 264 V AC
Permissible mains frequency
47 ... 63 Hz
Voltage failure buffering
> 40 ms (at 187 V AC)
Input current
0.3 ... 0.18 A
0.73 ... 0.43 A
Make current (25°C)
15 A
30 A
Device protection
Internal
Recommended circuit
> 6 A characteristic D
breaker (IEC 898) in mains in- > 10 A characteristic C
feed
Output data
Output voltage
12 V DC
Overall tolerance
+/- 3 %
Adjustment range
11.1 ... 12.9 V DC
Residual ripple
< 200 mVpp
Output current
Overcurrent limiting
1.9 A
4.5 A
2.4 A
4.5 A
Efficiency
80 %
Parallel switching to increase
power
Yes
Electromagnetic compatibility
Interference suppression
EN 50081–1, EN 55022 Class B
Interference immunity
EN 50082-2
220
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Technical Data
LOGO! Power
12 V / 1.9 A
LOGO! Power
12 V / 4.5 A
Safety
Electrical isolation, primary/
secondary
Yes, SELV (to EN 60950/VDE 0805)
Safety class
II (to IEC 536/VDE 0106 T1)
Type of protection
IP 20 (to EN 60529/VDE 470 T1)
CE marking
Yes
UL/CSA certification
Yes; UL 508 / CSA 22.2
FM approval
In preparation
General details
Ambient temperature range
–20 ... +55°C, natural convection
Storage and transport temperature
- 40 ... +70°C
Connections on input
respectively on terminal (1 x. 2.5 mm2 o. 2 x
1.5 mm2 ), each for L1 and N
Connections on output
Two terminals (1x.2.5 mm2 o. 2x 1.5 mm2
), each for L+ and M
Installation
On 35 mm DIN rail, snap–on
Dimensions in mm (WxHxD)
72 x 80 x 55
126 x 90 x 55
Approx. weight
0.2 kg
0.4 kg
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Technical Data
A.7 Technical Data: LOGO!Power 24 V
LOGO! Power 24 V is a switched–mode primary power
supply unit for LOGO! devices. Two current intensities are
available.
LOGO! Power
24 V / 1,3 A
LOGO! Power
24 V / 2.5 A
Input data
Input voltage
120 ... 230 V AC
Permissible range
85 ... 264 V AC
Permissible mains frequency
47 ... 63 Hz
Voltage failure buffering
40 ms (at 187 V AC)
Input current
0.48 ... 0.3 A
0.85 ... 0.5 A
Make current (25°C)
< 15 A
< 30 A
Device protection
Internal
Recommended circuit
> 6 A characteristic D
breaker (IEC 898) in mains in- > 10 A characteristic C
feed
Output data
Output voltage
24 V DC
Overall tolerance
+/- 3 %
Adjustment range
22.2 ... 25.8 V DC
Residual ripple
< 250 mVpp
Output current
Overcurrent limiting
1.3 A
2.5 A
1.6 A
2.8 A
Efficiency
> 80 %
Parallel switching to increase
power
Yes
Electromagnetic compatibility
Interference suppression
EN 50081–1, EN 55022 Class B
Interference immunity
EN 50082-2
222
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Technical Data
LOGO! Power
24 V / 1,3 A
LOGO! Power
24 V / 2.5 A
Safety
Electrical isolation, primary/
secondary
Yes, SELV (to EN 60950/VDE 0805)
Safety class
II (to IEC 536/VDE 0106 T1)
Type of protection
IP 20 (to EN 60529/VDE 470 T1)
CE marking
Yes
UL/CSA certification
Yes; UL 508 / CSA 22.2
FM approval
yes; Class I, Div. 2, T4
General details
Ambient temperature range
–20 ... +55°C, natural convection
Storage and transport temperature
- 40 ... +70°C
Connections on input
respectively one terminal (1 x. 2.5 mm2 o. 2
x 1.5 mm2 ), each for L1 and N
Connections on output
two terminals (1x.2.5 mm2 o. 2x 1.5 mm2 ),
each for L+ and M
Installation
On 35 mm DIN rail, snap–on
Dimensions in mm (WxHxD)
72 x 80 x 55
126 x 90 x 55
Approx. weight
0.2 kg
0.4 kg
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Technical Data
A.8 Technical Data: LOGO! Contact 24/230
LOGO! Contact 24 and LOGO! Contact 230 are switching
modules for direct switching of ohmic loads up to 20 A and
motors up to 4 kW (without noise emission, hum–free).
Operating voltage
LOGO!
Contact 24
LOGO!
Contact 230
24 V DC
230 V AC;
50/60 Hz
Switching capacity
Utilization category AC-1: Switching of
ohmic loads at 55°C
Operating current at 400 V
20 A
Output of three–phase loads at 400 V
13 kW
Utilization category AC-2, AC-3: Motor
with slip ring induction/cage armature
Operating current at 400 V
8.4 A
Output of three–phase loads at 400 V
4 kW
Short–circuit protection:
Assignment type 1
25 A
Assignment type 2
10 A
Connecting leads
Finely stranded with wire end ferrules
single–core
2x (0.75 to 2.5) mm2
2x (1 to 2.5) mm2
1 x 4 mm2
Dimensions (WxHxD)
36 x 72 x 55
Ambient temperature
-25 ... +55°C
Storage temperature
-50 ... +80°C
224
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B Determining the Cycle Time
The program cycle is the complete execution of the program, that is, primarily the reading in of the inputs, the
processing of the program and the subsequent reading out
of the outputs. The cycle time is the time required to execute a program once in full.
The time required for a program cycle can be determined
using a short test program. This test program is generated
in LOGO!. In parameter assignment mode it outputs a
value used to calculate the actual cycle time.
Test program
1. Start to create the test program by linking an output or
memory bit to a threshold switch. At the input of the
switch you can then connect a clock generator that is
switched on with a hi signal.
B02
B01
Hi
Output Q
T
Par
Qx
or
Memory
bit M
2. Configure the two blocks as shown below. Due to the
pulse rate of a 0 seconds a pulse is generated in every
program cycle. The time interval of the threshold switch
is set to 2 seconds.
B02:T
T =00.00s+
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B01:Par
SW=1000+
SW=0000
G_T=02.00s
225
Determine the cycle time
3. Then start the program and switch the LOGO! to parameter assignment mode. You can view the parameters of the threshold switch in this parameter assignment mode.
B01:Par
SW=1000+
SW=0000
fa =0086
fa= is the sum of the
pulses measured per
time unit G_T
4. The reciprocal value of Fe is equal to the cycle time of
the LOGO! with the program currently in its memory.
1/Fe = cycle time in s
Explanation
The output signal of the clock pulse generator (T=0) is
toggled at every program cycle. Thus, one logic level (high
or low) width is exactly equivalent to the length of one
cycle. Hence, a period lasts 2 cycles.
The threshold switch indicates the ratio of periods per 2
seconds which results in the ratio of cycles per second.
Edge change of the clock generator
art every program cycle
Cycle time
1 period = 1 pulse = 2 cycles
Periods
226
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C LOGO! without display
The LOGO! version without display is intended for use in
specific applications not requiring operating elements such
as a keyboard or a display 12/24 RCo, LOGO! 24 RCo and
LOGO! 230 RCo.
For example, this is what a LOGO! 230 RCo looks like:
L1 N I1 I2 I3 I4
I5 I6 I7 I8
RUN/STOP
1
Q1
2
1
Q2
2
1
Q3
2
1
Q4
2
Less is definitely more!
Your benefits:
Improved economies without the operating element.
Requires less switch cabinet space than conventional
hardware.
Substantial benefits with regard to flexibility and prime
costs compared to stand–alone electronic switchgear.
Of advantage even for applications in which merely two
or three conventional switching devices can be replaced.
Very easy to use.
Cannot be used by unauthorized persons.
Compatible with LOGO! basic variants.
Offers the option to read data via LOGO!Soft Comfort,
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227
LOGO! Without display
Programming without an operating element
You can program the LOGO! without display in two ways:
On the PC, create a program with LOGO!Soft Comfort
and transfer it to the LOGO!
Use a LOGO! program module/card and transfer the
program contained in this device to the LOGO! Without
display
Operating characteristics
The LOGO! is ready for operation when power is switched
on. Switching off a LOGO! without display is equivalent to
disconnecting the power supply, e.g. as if you remove the
plug.
LOGO! RCo versions cannot be prepared for data transfer
per keyboard and the programs cannot be started or
stopped per pushbutton. This is why the startup behavior of
LOGO! RCo versions has been slightly modified:
Startup characteristics
The program in a module/card that is plugged into the
LOGO! is copied immediately to the LOGO! after power is
switched on. An existing program is overwritten.
If a PC cable is connected the LOGO! switches automatically to PC LOGO mode at startup. The PC software
LOGO!Soft Comfort can be used to read the program of
the LOGO! or to save them to the LOGO!,
After power is switched on, the LOGO! automatically
switches from STOP to RUN if a valid program exists in
memory.
228
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LOGO! Without display
Operating Status Indicator
Operating states, e.g. Power On, RUN and STOP are indicated by an LED on the front hood.
Red LED:
Power On/STOP
Green LED:
Power On/RUN
The red LED is lit after Power On and in all LOGO! states
other than RUN. The green LED is lit when LOGO! is in
RUN mode.
Reading the operating hours counter in STOP mode
Prerequisites: The PC link must be plugged in prior to
Power On.
In LOGO!Soft Comfort as of V 3.0 (refer to Chapter 7) you
can read the MN and OT values of the hours counter. The
hours counter values can be fetched without having to enter a password.
If your LOGO! without display is equipped with a red module you cannot fetch the values of the hours counter, because when you remove the module (in order to connect
the PC link) you delete the program in the LOGO!. .
LOGO! Manual
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229
LOGO! Without display
230
LOGO! Manual
A5E00119092-01
D LOGO! Menu structure
Main menu
>Program..
Programming menu
>Edit Prg
Password?
AA
Q1
Q1
>Prg Name
ABC
>Clear Prg
Clear Prg
>No
Yes
>Password
Old:
No Password
New:
Transfer menu
>PC/Card..
>PC<->
PC<->
Stop?
Press ESC
>
->Card
The program is
transferred.
>Card->
If no module/card is inserted LOGO!
returns to the main menu.
LOGO! Manual
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231
LOGO! Menu structure
>Clock..
>Set Clock
Set Clock
Th 14: 45
MM.DD.YY
06. 21. 01
>S/W Time
>On
Off
S/W Time:
Off
>EU
UK
US
..
EU
UK
US
>..
MM.DD
+ : 0 3. 3 1
– : 1 1. 0 1
∆ = 120 min
Keys
Keys
I:0.,1.,2.
>Start
Q:0.,1.
Th 14: 45
06. 21. 01
123456789
0123456789
01234
123456789
0123456
n times
Message
text
n = 0. . 5
n times
Message
text
n = 0. . 5
n times
Message
text
n = 0. . 5
>Stop
Set Param
Set Clock
Prg Name
Parameter assignment menu
232
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LOGO! Menu structure
No program after Power on
Main menu
No Program
Press ESC
Program..
PC/Card..
Clock..
Start
Parameter assignment menu
>Stop
Stop Prg
> No
Yes
Main menu
Program..
PC/Card..
Clock..
Start
Stop Prg
No
> Yes
>Set Param
B05 : Par
SW↑:0050
SW↓:0048
Fe = 0012
>Set Clock
Set Clock
Th 14: 45
MM.DD.YY
06. 21. 01
>Prg Name
ABC
Q:0.,1.
I:0.,1.,2.
Th 14: 45
06. 21. 01
LOGO! Manual
A5E00119092-01
or
123456789
0123456789
01234
or
123456789
0123456
233
LOGO! Menu structure
234
LOGO! Manual
A5E00119092-01
Order Numbers
Table A
Designation
Variant
basic
Basic
without display
Digital module
Analog module
Order number
LOGO! 12/24 RC *
6ED1 052–1MD00–0BA3
LOGO! 24):
6ED1 052–1CC00–0BA3
LOGO! 24 RC (AC)
6ED1 052–1HB00–0BA3
LOGO! 230 RC
6ED1 052–1FB00–0BA3
LOGO! 12/24 RCo *
6ED1 052–2MD00–0BA3
LOGO! 24 RCo (AC)
6ED1 052–2HB00–0BA3
LOGO! 230 RCo
6ED1 052–2FB00–0BA3
LOGO! DM8 12/24R
6ED1 055–1MB00–0BA0
LOGO! DM8 24
6ED1 055–1CC00–0BA0
LOGO! DM8 230R
6ED1 055–1FB00–0BA0
LOGO! AM2
6ED1 055–1MA00–0BA0
*: Also with analog inputs
LOGO! Manual
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235
Order Numbers
Table B
Designation
Accessories
Software
Order number
LOGO!Soft Comfort V3.0
6ED1 058–0BA00–0YC2
Upgrade Comfort V1.0,
V2.0 to V3.0
6ED1 058–0CA00–0YC1
Program modules
Yellow card
6ED1 056–1BA00–0AA0
Red card
6ED1 056–4BA00–0AA0
Switching module
LOGO!Contact 24 V
6ED1 057–4CA00–0AA0
LOGO!Contact 230 V
6ED1 057–4EA00–0AA0
Power modules
LOGO!Power 12V/1.9A
6EP1 321–1SH01
LOGO!Power 12V/4.5A
6EP1 322–1SH01
LOGO!Power 24V/1.3A
6EP1 331–1SH01
LOGO!Power 24V/2.5A
6EP1 332–1SH41
PC cable
6ED1 057–1AA00–0BA0
Manual
6ED1 050–1AA00–0BE4
Others
236
LOGO! Manual
A5E00119092-01
Abbreviations
AM
B01
BN
C
Cnt
Co
Dir
DM
En
Analog module
Block number B01
Block number
in the LOGO! device designation: integrated clock
Count = input for counter
Connector
Direction (e.g. for counter)
Digital module
Enable (e.g. for switching on the clock pulse
generator)
BF
Basic functions
No
Cams (time switch parameters)
o
in the LOGO! device designation: without display
Par Parameter
R
Reset
R
in the LOGO! device designation: Relay outputs
S
Set (e.g. setting the latching relay)
SF
Special functions
T
Time (parameter)
S
Segment
Trg Trigger (parameter)
0BA3 devices: the latest LOGO! Basic version, described
in this Manual.
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237
238
LOGO! Manual
A5E00119092-01
Index
Symbols
?, on the display, 71
A
Analog
Comparator, 138
Values, 96
Analog module, 2, 7
Basics on special functions, 92
BF, 81, 85
Block, 39
deleting, 69
interconnected blocks, 70
inserting, 64
number, 39
assigning, 40
Block diagram, 41
BN, 81
AND, 87
AND , 87
AND not, 88
Applications, 171
AS Interface, 2
AS interface, 7, 192
AS interface function module,
192
Asynchronous Pulse Generator,
130
B
Basic functions, 85
AND, 87
with edge, 87
NAND, 88
with edge, 89
NOR, 90
NOT, 91
OR, 89
XOR, 91
LOGO! Manual
A5E00119092-01
C
CE marking, 9
Certification , 9
Character set, 56
Checking , 67
Circuit diagram, 42
Circuit program , 77
Circuit status transition, 25
Clock Generator, Symmetric,
128
Co, 81, 82
Compatibility, Versions, 160
Connecting, Inputs, 24
Connection, x, 93
Connector, 16
239
Index
Connectors, 36, 82, 84
hi, 38
inputs, 38
lo, 38
LOGO!’s, 38
outputs, 38
x, 38
Connectors , 82
E
Edge evaluation, 89
Edge triggering, 87
Editing, 64
Equipment types, LOGO!, 2
CSA, 9
Example
Air–conditioning system, 183
automatic door, 176
further applications, 204
Industrial gate, 188
industrial gate
controlling, 192
Monitoring, 192
Lighting
Corridor, 172
Staircase, 172
Luminous rows, 196
Service water pump, 200
Cursor, 46
exclusive OR, 91
Cursor movement, 46
Exiting programming mode, 68
Cycle time, 225
Expansion module, Analog module, 38
Constants , 82
Control panel, 4, 5
Conversion, Summertime and
Wintertime, 73
Correcting Typing Errors, 71
Counter
Operating Hours, 124
Up/Down, 122
Cover, 16
D
Demo versions, 168
Digital module, 2, 7
Dimensions, 15
Display, 40
Expansion module , Digital module, 38
Expansion modules, 2
Analog module, 2
Communication module, 2
Digital module, 2
Operating state, 34
expansion modules, 36
Display view, 40
Displaying, 67
drag&drop, 168
240
LOGO! Manual
A5E00119092-01
Index
F
Internet address, 171
Inverter, 91
FM approval, 9
Four golden rules, 45
Frequency functions, 26
L
Function blocks, 39
Latching Relay, 109
Function module ASi, 2
LCD, 4, 5
Function module–ASi, 7
LED, 229
Functions, 81
Levels, 84
Limit, 77
Golden rules, 45
List
BF, 81
BN, 81
Co, 81, 82
SF, 81, 98
Ground terminal, 23
List , BF, 85
Guidelines, 11
Logic module, 1
G
Gain, 96
Logical inputs, 93
H
Hiding, 67
I
Initialization memory bit, 83
Inputs, 82
Analog inputs, 26, 82
connection, 24
Digital Inputs, 82
Fast inputs, 26
Groups, 25
On–screen presentation, 61
LOGO!
connecting to PC, 169
Guidelines, 11
Installing, 15
Operating states, 34
recognizing, 7
Structure of, 4
switching on, 31
uninstalling, 15
Variants, 8
wiring, 22
Inserting, 64
LOGO! Manual
A5E00119092-01
241
Index
LOGO! menus, 47
LOGO! Software, 167
LOGO!Soft Comfort, 168
N
Name, 55
NAND, 88
M
Memory
area, 77
space, 77
utilization, 78
Memory bits, 83
Menu structure, 231
Menus
Main menu, 47
Menu Clock, 47
Parameter assignment menu,
47
Programming menu, 47
Transfer menu, 47
Negation, 91
NOR , 90
NOT , 91
O
Off Delay, 103
Off–time, 117
Offset, 96
On Delay, 101
retentive, 107
On–time, 117
On/Off Delay, 105
Message Texts, 145
Open connectors, 84
Message texts, Character set,
147
Operating
characteristics, 228
Hours counter, Fetching MN
and OT values, 229
Status indicator, 229
Mode
Parameter assignment, 152
parameter assignment, 47
programming, 47
Mounting
Drilling template, 21
Profile rail mounting, 16
Wall–mounting, 20
Operating
Hours Counter, 124
hours counter, Reading MN
and OT values, 126
Mounting Guidelines, 11
Multifunctional switch, 143
242
LOGO! Manual
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Index
Operating mode
Changing operating mode, 45
Programming mode, 48
OR, 89
OR , 89
OR not, 90
Output connection, Connecting,
29
Outputs, 82
connecting, 29
Presentation on the Display,
61
P
Password
assigning, 57
changing, 58
deactivating, 59
Wrong input, 60
PC – LOGO, 169
PC – LOGO mode, 169
PC cable, 169
Planning, 46
Power
off, 32
on, 32
return, 31
switch, 31
Power supply, connecting, 22
Par, 77
Pre–warning duration , 142
Parameter, 153
’Set Param’, 153
displaying/hiding, 67
Inputs, 94
selecting, 154
setting, 151
T, 94
Pre–warning time , 142
Parameter assignment, 66
Parameter assignment menu,
152
Parameter assignment screen
form, 116, 146
Parameter Protection, 96
Parameters, changing, 155
LOGO! Manual
A5E00119092-01
Profile rail, 15
Program cycle, 225
Program module
’Card ––> LOGO’, 166
’LOGO ––> Card’, 163
copying, 165
inserting, 161, 162
red, 159
removing, 161, 162
yellow, 159
Program name
assigning, 55
changing, 56
character set, 56
read, 153
243
Index
Programs
’Clear Prg’, 72
’Edit Prg’, 49
’Password’, 57
’Prg Name’, 55
archiving, 159
changing, 63
deleting, 72
duplicating, 159
editing, 51
sending by post, 159
S
Sensor attributes, 24
Sensor connections, 27
Set Clock, ’Set Clock’, 158
Setting, 66
Setting the date, 158
Setting the Time–Of–Day, ’Set
Clock’, 153
Pulse
Pause, 130
width , 130
Setting the time–of–day, 158
Pulse Generator, Asynchronous
, 130
Simulation , 167
Pulse Output, 112
Slide, 17, 19
Pulse Relay, 111
Softkey, 148
SF, 81, 98
Size of a circuit, 77
Software , 167
R
RAM, 77
Random Generator, 131
Relay outputs, 29, 219
service life, 219
switching capacity, 219
REM, 77
Resources, 77
Retentive On Delay, 107
Retentivity, 95
Rules, Four golden, 45
RUN, ’Start’, 61
244
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Index
Special functions, 98
Analog Comparator, 138
Basic knowledge, 92
Clock Generator, Symmetric,
128
Counter
Hours Counter, 124
Up/Down, 122
Delay
Delay, 103
On, 101
On/off, 105
retentive on, 107
Message Texts, 145
Pulse Generator, asynchronous, 130
Random Generator, 131
Relay
Lock, 109
Pulse, 111
Softkey, 148
Switch
Comfort, 143
Stairway Lighting, 141
Threshold Switch, Frequency,
133
Threshold switch, Analog,
135
Timer, Week, 115
Timer switch, Year, 120
Wiping Relay, Pulse output,
112
Wiping relay, edge–triggered,
114
Stairway Lighting Switch, 141
Start, 61
Startup characteristics, 228
Structure, 13
Maximum structure, 13
with different voltage classes,
14
Summertime, 73
Summertime/Wintertime Conversion, 73
’S/W Time’, 73
Customizing parameters, 75
enable, 76
enabling, 73
Switch
Comfort, 143
Stairway Lighting, 141
Switched current, maximum, 30
Symbols, 7
Symmetric Clock Generator,
128
T
T. See time
Technical Data, 207
general, 207
LOGO! 12..., 215
LOGO! 230...., 209
LOGO! 24, 212
LOGO! AM2, 218
LOGO! DM8 12/24R, 215
LOGO! DM8 230R, 209
LOGO! DM8 24, 212
LOGO!Contact, 224
LOGO!Power 12 V, 220
LOGO!Power 24 V, 222
Stop, 152
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245
Index
Threshold Switch
Analog, 135
Frequencies, 133
Time, Accuracy of, 95
time, Accuracy of, 143
Time Response, 94
Time switch, 1
Timer, 77
W
Weekday, 116
Weekly timer switch, 7, 117
Examples, 118
setting, 117
Weekly Timer Switch , 115
Wintertime, 73
Timing deviation , 95
Wiping Relay
edge triggered, 114
Pulse Output, 112
Transistor outputs, 30
Wire ferrules, 22
Type of equipment, LOGO!, 2
without display, 227
Reading the operating hours
counter, 229
Timer switch, Accuracy, 95
Type of protection, 67
U
UL, 9
X
XOR , 91
Uninstalling, 18
Unit segments, 15
Up/down Counter, 122
Upgrade, 168
Y
Yearly Timer Switch, 120
Upward compatibility, 161
Z
V
Zero point, 96
Voltage levels , 84
Voltage supply, connecting,
Protective circuit, 23
246
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