Allen-Bradley MicroLogix 1200 User manual

MicroLogix™ 1200
Programmable
Controllers
Bulletin 1762 Controllers and
Expansion I/O
User Manual
Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls (Publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://www.ab.com/manuals/gi) describes some important differences
between solid state equipment and hard-wired electromechanical devices.
Because of this difference, and also because of the wide variety of uses for
solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is
acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for
indirect or consequential damages resulting from the use or application of
this equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with
any particular installation, Rockwell Automation, Inc. cannot assume
responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to
use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without
written permission of Rockwell Automation, Inc. is prohibited.
Throughout this manual we use notes to make you aware of safety
considerations.
WARNING
IMPORTANT
ATTENTION
Identifies information about practices or circumstances
that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property
damage, or economic loss.
Identifies information that is critical for successful
application and understanding of the product.
Identifies information about practices or circumstances
that can lead to personal injury or death, property
damage, or economic loss. Attentions help you:
• identify a hazard
• avoid a hazard
• recognize the consequence
SHOCK HAZARD
Labels may be located on or inside the drive to alert
people that dangerous voltage may be present.
BURN HAZARD
Labels may be located on or inside the drive to alert
people that surfaces may be dangerous temperatures.
Summary of Changes
The information below summarizes the changes to this manual since
the last printing.
To help you find new and updated information in this release of the
manual, we have included change bars as shown to the right of this
paragraph.
The table below lists the sections that document new features and
additional or updated information about existing features.
For this information
See
MicroLogix 1200 controllers with the
additional communications port
(Programmer/HMI Port)
page(s):
• hardware features
• 1-1
• firmware revision history
• 1-5
• description
• 1-6
• new 6 catalog numbers
• 4-1
• application example
• 4-1
• specifications
• A-1
Programmer/HMI Port
1
page(s):
• location
• 1-1
• configuration
• 4-2
• supported protocol
• 4-2
• no LED indicator provided
• C-1
Publication 1762-UM001D-EN-P - March 2004
Summary of Changes
2
Publication 1762-UM001D-EN-P - March 2004
Table of Contents
Preface
Who Should Use this Manual. . . . . . . . . .
Purpose of this Manual . . . . . . . . . . . . . .
Related Documentation . . . . . . . . . . .
Common Techniques Used in this Manual
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P-1
P-1
P-2
P-2
Chapter 1
Hardware Overview
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
MicroLogix 1200 Memory Module and/or Real-Time Clock .
1-2
1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Firmware Revision History . . . . . . . . . . . . . . . . . . . . . . 1-4
Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Chapter 2
Installing Your Controller
i
Agency Certifications. . . . . . . . . . . . . . . . . . . . . . . .
Compliance to European Union Directives . . . . . . . .
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Voltage Directive . . . . . . . . . . . . . . . . . . . .
Installation Considerations. . . . . . . . . . . . . . . . . . . .
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . .
Hazardous Location Considerations . . . . . . . . . .
Disconnecting Main Power. . . . . . . . . . . . . . . . .
Safety Circuits . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Distribution. . . . . . . . . . . . . . . . . . . . . . .
Periodic Tests of Master Control Relay Circuit . . .
Power Considerations . . . . . . . . . . . . . . . . . . . . . . .
Isolation Transformers . . . . . . . . . . . . . . . . . . . .
Power Supply Inrush . . . . . . . . . . . . . . . . . . . . .
Loss of Power Source. . . . . . . . . . . . . . . . . . . . .
Input States on Power Down . . . . . . . . . . . . . . .
Other Types of Line Conditions . . . . . . . . . . . . .
Preventing Excessive Heat . . . . . . . . . . . . . . . . . . . .
Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . .
Using Emergency-Stop Switches . . . . . . . . . . . . .
Schematic (Using IEC Symbols) . . . . . . . . . . . . .
Schematic (Using ANSI/CSA Symbols). . . . . . . . .
Installing a Memory Module and/or Real-Time Clock
Controller Mounting Dimensions . . . . . . . . . . . . . . .
Controller and
Expansion I/O Spacing . . . . . . . . . . . . . . . . . . . . . .
Mounting the Controller . . . . . . . . . . . . . . . . . . . . .
DIN Rail Mounting . . . . . . . . . . . . . . . . . . . . . . .
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . .
1762 Expansion I/O Dimensions . . . . . . . . . . . . . . .
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2-1
2-1
2-2
2-2
2-2
2-3
2-3
2-4
2-4
2-5
2-5
2-5
2-5
2-6
2-6
2-7
2-7
2-7
2-8
2-9
2-10
2-11
2-12
2-13
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2-13
2-14
2-15
2-16
2-17
Publication 1762-UM001D-EN-P - March 2004
Table of Contents
ii
Mounting 1762
Expansion I/O . . . . . . . . .
DIN Rail Mounting . . . .
Panel Mounting . . . . . .
Connecting Expansion I/O
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2-17
2-17
2-18
2-19
Chapter 3
Wiring Your Controller
Wiring Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Wiring Recommendation . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using Surge Suppressors . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Recommended Surge Suppressors . . . . . . . . . . . . . . . . 3-5
Grounding the Controller . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Terminal Block Layouts . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Terminal Groupings . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Sinking and Sourcing Wiring Diagrams . . . . . . . . . . . . . . . 3-10
1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L24AWAR,
1762-L24BWAR and 1762-L24BXBR Wiring Diagrams. . . 3-11
1762-L40AWA, 1762-L40BWA, 1762-L40BXB ,
1762-L40AWAR, 1762-L40BWAR and 1762-L40BXBR Wiring
Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Controller I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Minimizing Electrical Noise. . . . . . . . . . . . . . . . . . . . . . 3-17
Expansion I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Discrete Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . 3-17
Analog Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Chapter 4
Communication Connections
Publication 1762-UM001D-EN-P - March 2004
Supported Communication Protocols . . . . . . . . . . . . . . .
Default Communication Configuration . . . . . . . . . . . . . .
Using the Communications Toggle Push Button . . . . . . .
Connecting to the RS-232 Port . . . . . . . . . . . . . . . . . . . .
Making a DF1 Point-to-Point Connection . . . . . . . . .
Using a Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Isolated Modem Connection . . . . . . . . . . . . . . . . . . .
Connecting to a DF1 Half-Duplex Network . . . . . . . .
Connecting to a DH-485 Network . . . . . . . . . . . . . . . . .
Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . .
DH-485 Communication Cable . . . . . . . . . . . . . . . . .
Connecting the Communication Cable to the DH-485
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grounding and Terminating the DH-485 Network . . .
Connecting the AIC+ . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Selection Guide . . . . . . . . . . . . . . . . . . . . . . .
Recommended User-Supplied Components. . . . . . . .
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4-1
4-2
4-2
4-4
4-5
4-5
4-6
4-8
4-9
4-9
4-9
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4-10
4-12
4-12
4-14
4-16
Table of Contents
Safety Considerations . . . . . . . . . .
Installing and Attaching the AIC+ .
Powering the AIC+. . . . . . . . . . . .
DeviceNet Communications. . . . . . . .
Cable Selection Guide . . . . . . . . .
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iii
4-17
4-18
4-18
4-20
4-20
Chapter 5
Using Trim Pots
Trim Pot Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Trim Pot Information Function File . . . . . . . . . . . . . . . . 5-2
Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Chapter 6
Using Real-Time Clock and
Memory Modules
Real-Time Clock Operation . . . . . . . . . .
Removal/Insertion Under Power. . . .
Writing Data to the Real-Time Clock.
RTC Battery Operation . . . . . . . . . . .
Memory Module Operation . . . . . . . . . .
User Program and Data Back-up. . . .
Program Compare . . . . . . . . . . . . . .
Data File Download Protection. . . . .
Memory Module Write Protection . . .
Removal/Insertion Under Power. . . .
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6-1
6-1
6-2
6-2
6-3
6-3
6-4
6-4
6-4
6-4
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. A-1
. A-6
. A-6
A-12
MicroLogix 1200 Replacement Kits. . . . . . . . . . . . . . .
Controller 40-Point Replacement Terminal Blocks .
1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion I/O Replacement Doors . . . . . . . . . . . .
Expansion I/O Replacement DIN Latches . . . . . . .
Expansion I/O Replacement Door Labels . . . . . . .
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B-1
B-1
B-2
B-2
B-2
B-2
Understanding the Controller LED Status . . . . . . . . . . . .
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Error Recovery Model . . . . . . . . . . . . . . . . . .
Analog Expansion I/O Diagnostics and Troubleshooting.
Module Operation and Channel Operation . . . . . . . .
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C-1
C-2
C-2
C-3
C-4
C-4
Appendix A
Specifications
Controller Specifications . . . .
Expansion I/O Specifications .
Discrete I/O Modules . . . .
Analog Modules. . . . . . . .
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Appendix B
Replacement Parts
Appendix C
Troubleshooting Your System
Publication 1762-UM001D-EN-P - March 2004
Table of Contents
iv
Power-up Diagnostics . . . . . . . . . . . . . .
Critical and Non-Critical Errors . . . . . . . .
Module Error Definition Table . . . . . . . .
Error Codes . . . . . . . . . . . . . . . . . . . . . .
Calling Rockwell Automation for Assistance .
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C-4
C-5
C-5
C-7
C-8
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D-1
D-1
D-2
D-2
D-2
Appendix D
Using Control Flash to Upgrade
Your Operating System
Preparing for Upgrade. . . . . . . . . . . . .
Install ControlFlash Software . . . . .
Prepare the Controller for Updating
Sequence of Operation . . . . . . . . . . . .
Missing/Corrupt OS LED Pattern . . . . .
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Appendix E
Connecting to Networks via
RS-232 Interface
RS-232 Communication Interface . . . . . . . . . . . . . . . . . .
DF1 Full-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . .
DF1 Half-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . .
Using Modems with MicroLogix 1200 Programmable
Controllers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DH-485 Communication Protocol. . . . . . . . . . . . . . . . . .
Devices that use the DH-485 Network . . . . . . . . . . .
Important DH-485 Network Planning Considerations .
Example DH-485 Connections . . . . . . . . . . . . . . . . .
Modbus Communication Protocol . . . . . . . . . . . . . . . . .
ASCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . E-1
. . E-1
. . E-2
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E-3
E-5
E-5
E-6
E-9
E-12
E-12
Appendix F
System Loading and Heat
Dissipation
Glossary
Index
Publication 1762-UM001D-EN-P - March 2004
System Loading Limitations . . . . . . . . . . . . . . . . . . . . . . . . F-1
System Loading Example Calculations (24-Point Controller) .
F-1
System Loading Worksheet . . . . . . . . . . . . . . . . . . . . . . . . F-3
Current Loading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4
System Loading Example Calculations (40-Point Controller) .
F-5
System Loading Worksheet . . . . . . . . . . . . . . . . . . . . . . . . F-7
Current Loading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-7
Calculating Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . F-9
Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . 1-9
Installation Assistance . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
New Product Satisfaction Return . . . . . . . . . . . . . . . . . . 1-9
Preface
Read this preface to familiarize yourself with the rest of the manual. It
provides information concerning:
•
•
•
•
•
Who Should Use this
Manual
who should use this manual
the purpose of this manual
related documentation
conventions used in this manual
Rockwell Automation support
Use this manual if you are responsible for designing, installing,
programming, or troubleshooting control systems that use
MicroLogix™ 1200 controllers.
You should have a basic understanding of electrical circuitry and
familiarity with relay logic. If you do not, obtain the proper training
before using this product.
Purpose of this Manual
This manual is a reference guide for MicroLogix 1200 controllers and
expansion I/O. It describes the procedures you use to install, wire,
and troubleshoot your controller. This manual:
• explains how to install and wire your controllers
• gives you an overview of the MicroLogix 1200 controller system
Refer to Publication 1762-RM001, MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual for the
MicroLogix 1200 and 1500 instruction set and for application examples
to show the instruction set in use. Refer to your RSLogix 500
programming software user documentation for more information on
programming your MicroLogix 1200 controller.
1
Publication 1762-UM001D-EN-P - March 2004
P-2
Preface
Related Documentation
The following documents contain additional information concerning
Rockwell Automation products. To obtain a copy, contact your local
Rockwell Automation office or distributor.
For
Read this Document
Document Number
Information on understanding and applying micro controllers.
MicroMentor
1761-MMB
Information on the MicroLogix 1200 Controllers instruction set.
MicroLogix 1200 and 1500
Programmable Controllers Instruction
Set Reference Manual
1762-RM001
Information on mounting and wiring the MicroLogix 1200
Controllers, including a mounting template for easy installation.
MicroLogix 1200 Programmable
Controllers Installation Instructions
1762-IN006
A description on how to install and connect an AIC+. This manual
also contains information on network wiring.
Advanced Interface Converter (AIC+)
User Manual
1761-6.4
Information on how to install, configure, and commission a DNI.
DeviceNet™ Interface User Manual
1761-6.5
Information on DF1 open protocol.
DF1 Protocol and Command Set
Reference Manual
1770-6.5.16
Information about the Modbus protocol.
Modbus Protocol Specifications
Available from
www.modbus.org
In-depth information on grounding and wiring Allen-Bradley
programmable controllers.
Allen-Bradley Programmable
Controller Grounding and Wiring
Guidelines
1770-4.1
A description of important differences between solid-state
Application Considerations for
programmable controller products and hard-wired electromechanical Solid-State Controls
devices.
SGI-1.1
An article on wire sizes and types for grounding electrical
equipment.
National Electrical Code - Published by the National Fire Protection
Association of Boston, MA.
A complete listing of current documentation, including ordering
instructions. Also indicates whether the documents are available on
CD-ROM or in multi-languages.
Allen-Bradley Publication Index
SD499
A glossary of industrial automation terms and abbreviations.
Allen-Bradley Industrial Automation
Glossary
AG-7.1
Common Techniques Used
in this Manual
Publication 1762-UM001D-EN-P - March 2004
The following conventions are used throughout this manual:
• Bulleted lists such as this one provide information, not
procedural steps.
• Numbered lists provide sequential steps or hierarchical
information.
• Italic type is used for emphasis.
Chapter
1
Hardware Overview
Hardware Features
The Bulletin 1762, MicroLogix 1200 programmable controller contains
a power supply, input and output circuits, and a processor. The
controller is available in 24 I/O and 40 I/O configurations.
The hardware features of the controller are:
Top View
Side View
7
6
10
8
2
0
1
5
12
COM
3
9
4
7
11
1
Table 1.1 Hardware Features
Feature
Description
Feature
Description
1
Terminal Blocks
7
Terminal Doors and Labels
(Removable Terminal Blocks on 40-point controllers
only.)
1
2
Bus Connector Interface to Expansion I/O
8
Trim Pots
3
Input LEDs
9
Communications Toggle Push Button
4
Output LEDs
10
Memory Module Port Cover(1) -orMemory Module and/or Real-Time Clock(2)
5
Communication Port/
Channel 0
11
DIN Rail Latches
6
Status LEDs
12
Programmer/HMI Port
(Equipped with 1762-LxxxxxR controllers only)
(1)
Shipped with controller.
(2)
Optional equipment.
Publication 1762-UM001D-EN-P - March 2004
1-2
Hardware Overview
Table 1.2 Controller Input Power and Embedded I/O
Catalog Number
1762-L24AWA, -L24AWAR
1762-L24BWA, -L24BWAR
Description
Input Power Inputs
120/240V ac (14) 120V ac
120/240V ac (10) 24V dc
1762-L24BXB, -L24BXBR
24V dc
(4) fast 24V dc
(10) 24V dc
(5) relay, (4) 24V dc FET
1762-L40AWA, -L40AWAR
1762-L40BWA, -L40BWAR
120/240V ac
120/240V ac
(4) fast 24V dc
(24) 120V ac
(20) 24V dc
(1) high-speed 24V dc FET
(16) relay
(16) relay
24V dc
(4) fast 24V dc
(20) 24V dc
(8) relay, (7) 24V dc FET
(4) fast 24V dc
(1) high-speed 24V dc FET
1762-L40BXB, -L40BXBR
Component Descriptions
Outputs
(10) relay
(10) relay
MicroLogix 1200 Memory Module and/or Real-Time Clock
The controller is shipped with a memory module port cover in place.
You can order a memory module, real-time clock, or memory module
and real-time clock as an accessory.
Table 1.3 Memory Module and/or Real-Time Clock
Publication 1762-UM001D-EN-P - March 2004
Catalog Number
Descriptions
1762-MM1
Memory Module only
1762-RTC
Real-Time Clock only
1762-MM1RTC
Memory Module and Real-Time Clock
Hardware Overview
1-3
1762 Expansion I/O
1762 expansion I/O can be connected to the MicroLogix 1200
controller, as shown below.
TIP
zt
A maximum of six I/O modules, in certain
combinations, may be connected to a controller. See
Appendix F System Loading and Heat Dissipation to
determine valid combinations.
1762 Expansion I/O
1762 Expansion I/O Connected to MicroLogix 1200 Controller
Table 1.4 Expansion I/O
Catalog Number
Descriptions
1762-IA8
8-Point 120V ac Input
1762-IQ8
8-Point Sink/Source 24V dc Input
1762-IQ16
16-Point Sink/Source 24V dc Input
1762-OA8
8-Point AC Triac Output
1762-OB8
8-Point Sourcing 24V dc Output
1762-OB16
16-Point Sourcing 24V dc Output
1762-OW8
8-Point AC/DC Relay Output
1762-OW16
16-Point AC/DC Relay Output
1762-OX6I
6-Point Isolated Relay Output
1762-IF2OF2
2-Channel Analog Voltage/Current Input
2-Channel Analog Voltage/Current Output
1762-IF4
4-Channel Analog Voltage/Current Input
1762-OF4
4-Channel Analog Voltage/Current Output
1762-IR4
RTD/Resistance Input
1762-IT4
Thermocouple/mV Input
Publication 1762-UM001D-EN-P - March 2004
1-4
Hardware Overview
Communication Cables
Use only the following communication cables with the MicroLogix
1200 controllers.
•
•
•
•
•
•
•
•
Programming
1761-CBL-PM02 Series C or later
1761-CBL-HM02 Series C or later
1761-CBL-AM00 Series C or later
1761-CBL-AP00 Series C or later
2707-NC8 Series A or later
2702-NC9 Series B or later
2707-NC10 Series B or later
2707-NC11 Series B or later
Programming the MicroLogix 1200 programmable controller is done
using RSLogix™ 500, Revision 4 or later. You must use Revision 4.5 or
later of RSLogix™ 500 in order to use the new features of the Series B
MicroLogix 1200 controllers, including the full ASCII instruction set.
Communication cables for programming are not included with the
software.
Firmware Revision History
Features are added to the controllers through firmware upgrades. Use
the listing below to be sure that your controller’s firmware is at the
level you need. Firmware upgrades are not required, except to allow
you access to the new features.
MicroLogix 1200
Catalog
Number
OS(1)
Series
Letter
OS
OS
Release Date
Revision Firmware
Letter
Release No.
Enhancement
1762-L24AWA
1762-L24BWA
1762-L40AWA
1762-L40BWA
A
A
FRN1
March 2000
Initial product release.
A
B
FRN2
May 2000
The trim pots (trimming potentiometers) on the controller
operated in reverse of the ladder logic. Corrected.
B
A
FRN3
November 2000
MicroLogix 1200 controllers now offer:
• Full ASCII (read/write)
• PTO Controlled Stop
• PWM Ramping
• RTC and String Messaging
• Static Data File Protection
• Comms Reset Pushbutton Bit
1762-L24BXB
1762-L40BXB
B
A
FRN3
November 2000
Initial product release. Supports all the features listed above for
the 1762-L24xWA and 1762-L40xWA controllers.
Publication 1762-UM001D-EN-P - March 2004
Hardware Overview
1-5
MicroLogix 1200
Catalog
Number
OS(1)
Series
Letter
OS
OS
Release Date
Revision Firmware
Letter
Release No.
1762-L24AWA
1762-L24BWA
1762-L24BXB
1762-L40AWA
1762-L40BWA
1762-L40BXB
C
A
FRN4(2)
June 2001
MicroLogix 1200 controllers now offer:
• Floating Point (F) Data File for use with:
compare instructions (EQU, GEQ, GRT, LEQ, LES, LIM, NEQ);
math instructions (ABS, ADD, CLR, DIV, MUL, NEG, SQR,
SUB); move instruction (MOV); file instructions (CPW, FLL);
and the message (MSG) instruction
• Programmable Limit Switch (PLS) File for use with HSC
• RTA - Real Time Clock Adjust
• GCD - Gray Code
• CPW - Copy Word
• ABS - Absolute Value
C
B
FRN5(3)
March 2002
Internal firmware revision; no user functionality change.
C
C
FRN6(3)
September 2002 MicroLogix 1200 Controllers now offer:
• The Floating Point (F) Data File can now be used with the
Scale with Parameters (SCP)
• Modbus Memory Mapping Enhancements
C
D
FRN7
April 2003
MicroLogix 1200 Controllers now offer:
• DF1 Half-Duplex Master Driver
• DF1 Radio Modem Driver
• Enhanced DF1 Broadcast Support
• ASCII Clear Buffer (ACL) instruction enhancement
C
E
FRN8
November 2003
MicroLogix 1200 Controllers now offer:
• Modbus Master Protocol
• PTO Independent Accel/Decel profiles
1762-L24AWAR C
1762-L24BWAR
1762-L24BXBR
1762-L40AWAR
1762-L40BWAR
1762-L40BXBR
E
FRN8
March 2004
MicroLogix 1200 Controllers now offer:
• Additional communications port called the Programmer/HMI
Port
1762-L24AWA
1762-L24BWA
1762-L24BXB
1762-L40AWA
1762-L40BWA
1762-L40BXB
Enhancement
There are operating system firmware flash upgrades and downgrades available for MicroLogix 1200 controllers from the MicroLogix
website (www.ab.com/micrologix). Any controller may be upgraded to the latest release by using these tools. Issues regarding
downgrading are discussed below.
(1)
OS = Operating System.
(2)
For users of RSLogix 500 Programming Software version 4.5 - MicroLogix 1200 Series C Revision A controllers with FRN4 firmware may be downgraded for compatibility
with this version of software using the ControlFlash FRN3 tool available on the MicroLogix website. Your controller may be later upgraded using the FRN5 (which replaces
the FRN4 ControlFlash upgrade, and is a functional equivalent) or higher ControlFlash tool.
(3)
For users of RSLogix 500 Programming Software version 4.5 - MicroLogix 1200 Series C Revision B controllers with FRN5 or later firmware may be downgraded for
compatibility with this version of software using the ControlFlash FRN 3.1 tool available on the MicroLogix website. Your controller may be later upgraded using the FRN5
(which replaces the FRN 4 ControlFlash upgrade, and is a functional equivalent) or higher ControlFlash tool.
Publication 1762-UM001D-EN-P - March 2004
1-6
Hardware Overview
Communication Options
The MicroLogix 1200 can be connected to a personal computer. It can
also be connected to a DH-485 network, or a Modbus™ network as an
RTU Master or RTU Slave using an Advanced Interface Converter
(catalog number 1761-NET-AIC) and to the DeviceNet™ network
using a DeviceNet Interface (catalog number 1761-NET-DNI). The
controller can also be connected to DF1 Half Duplex networks as an
RTU Master or RTU Slave. Series B controllers may also be connected
to serial devices using ASCII. See Chapter 4 Communication
Connections for more information on connecting to the available
communication options.
The 1762-LxxxxxR controllers provide an additional communication
port called the Programmer/HMI Port. This port supports DF1 Full
Duplex protocol only. The controller cannot initiate messages through
this port. It can only respond to messages sent to it. All
communication parameters are fixed and cannot be changed by a
user. See Default Communication Configuration on page 4-2 for the
configuration settings.
Publication 1762-UM001D-EN-P - March 2004
Chapter
2
Installing Your Controller
This chapter shows you how to install your controller. The only tools
you require are a flat or Phillips head screwdriver and drill. Topics
include:
•
•
•
•
•
•
•
•
•
•
•
•
•
Agency Certifications
Compliance to European
Union Directives
1
agency certifications
compliance to European Union Directives
installation considerations
safety considerations
power considerations
preventing excessive heat
master control relay
installing the memory module and/or real-time clock
controller mounting dimensions
controller and expansion I/O spacing
mounting the controller
mounting 1762 expansion I/O
connecting 1762 expansion I/O
• UL 508
• C-UL under CSA C22.2 no. 142
• Class I, Division 2, Groups A, B, C, D
(UL 1604, C-UL under CSA C22.2 no. 213)
• CE compliant for all applicable directives
• C-Tick compliant for all applicable acts.
This product has the CE mark and is approved for installation within
the European Union and EEA regions. It has been designed and tested
to meet the following directives.
Publication 1762-UM001D-EN-P - March 2004
2-2
Installing Your Controller
EMC Directive
This product is tested to meet Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and the following standards, in
whole or in part, documented in a technical construction file:
• EN 50081-2
EMC - Generic Emission Standard, Part 2 - Industrial
Environment
• EN 50082-2
EMC - Generic Immunity Standard, Part 2 - Industrial
Environment
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC Low
Voltage, by applying the safety requirements of EN 61131-2
Programmable Controllers, Part 2 - Equipment Requirements and
Tests.
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
• Industrial Automation Wiring and Grounding Guidelines for
Noise Immunity, publication 1770-4.1
• Guidelines for Handling Lithium Batteries, publication AG-5.4
• Automation Systems Catalog, publication B113
Installation Considerations
Publication 1762-UM001D-EN-P - March 2004
Most applications require installation in an industrial enclosure
(Pollution Degree 2(1)) to reduce the effects of electrical interference
(Over Voltage Category II(2)) and environmental exposure. Locate
your controller as far as possible from power lines, load lines, and
other sources of electrical noise such as hard-contact switches, relays,
and AC motor drives. For more information on proper grounding
guidelines, see the Industrial Automation Wiring and Grounding
Guidelines publication 1770-4.1.
(1)
Pollution Degree 2 is an environment where normally only non-conductive pollution occurs except that
occasionally temporary conductivity caused by condensation shall be expected.
(2)
Overvoltage Category II is the load level section of the electrical distribution system. At this level, transient
voltages are controlled and do not exceed the impulse voltage capability of the products insulation.
Installing Your Controller
ATTENTION
ATTENTION
Safety Considerations
2-3
Vertical mounting of the controller is not
recommended due to heat build-up considerations.
Be careful of metal chips when drilling mounting
holes for your controller or other equipment within
the enclosure or panel. Drilled fragments that fall
into the controller or I/O modules could cause
damage. Do not drill holes above a mounted
controller if the protective debris shields are
removed or the processor is installed.
Safety considerations are an important element of proper system
installation. Actively thinking about the safety of yourself and others,
as well as the condition of your equipment, is of primary importance.
We recommend reviewing the following safety considerations.
Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B,
C, D or non-hazardous locations only. The following WARNING
statement applies to use in hazardous locations.
WARNING
EXPLOSION HAZARD
• Substitution of components may impair suitability
for Class I, Division 2.
• Do not replace components or disconnect
equipment unless power has been switched off.
• Do not connect or disconnect components unless
power has been switched off.
• This product must be installed in an enclosure.
All cables connected to the product must remain
in the enclosure or be protected by conduit or
other means.
• All wiring must comply with N.E.C. article
501-4(b).
Publication 1762-UM001D-EN-P - March 2004
2-4
Installing Your Controller
Use only the following communication cables in Class I, Division 2
hazardous locations.
Communication Cables for Class I, Division 2 Hazardous Locations
1761-CBL-PM02 Series C or later
1761-CBL-HM02 Series C or later
1761-CBL-AM00 Series C or later
1761-CBL-AP00 Series C or later
2707-NC8 Series A or later
2707-NC9 Series B or later
2707-NC10 Series B or later
2707-NC11 Series B or later
Disconnecting Main Power
WARNING
Explosion Hazard
Do not replace components or disconnect equipment
unless power has been switched off.
The main power disconnect switch should be located where operators
and maintenance personnel have quick and easy access to it. In
addition to disconnecting electrical power, all other sources of power
(pneumatic and hydraulic) should be de-energized before working on
a machine or process controlled by a controller.
Safety Circuits
WARNING
Explosion Hazard
Do not connect or disconnect connectors while
circuit is live.
Circuits installed on the machine for safety reasons, like overtravel
limit switches, stop push buttons, and interlocks, should always be
hard-wired directly to the master control relay. These devices must be
wired in series so that when any one device opens, the master control
relay is de-energized, thereby removing power to the machine. Never
alter these circuits to defeat their function. Serious injury or machine
damage could result.
Publication 1762-UM001D-EN-P - March 2004
Installing Your Controller
2-5
Power Distribution
There are some points about power distribution that you should
know:
• The master control relay must be able to inhibit all machine
motion by removing power to the machine I/O devices when
the relay is de-energized. It is recommended that the controller
remain powered even when the master control relay is
de-energized.
• If you are using a dc power supply, interrupt the load side rather
than the ac line power. This avoids the additional delay of
power supply turn-off. The dc power supply should be powered
directly from the fused secondary of the transformer. Power to
the dc input and output circuits should be connected through a
set of master control relay contacts.
Periodic Tests of Master Control Relay Circuit
Any part can fail, including the switches in a master control relay
circuit. The failure of one of these switches would most likely cause
an open circuit, which would be a safe power-off failure. However, if
one of these switches shorts out, it no longer provides any safety
protection. These switches should be tested periodically to assure they
will stop machine motion when needed.
Power Considerations
The following explains power considerations for the micro controllers.
Isolation Transformers
You may want to use an isolation transformer in the ac line to the
controller. This type of transformer provides isolation from your
power distribution system to reduce the electrical noise that enters the
controller and is often used as a step-down transformer to reduce line
voltage. Any transformer used with the controller must have a
sufficient power rating for its load. The power rating is expressed in
volt-amperes (VA).
Publication 1762-UM001D-EN-P - March 2004
2-6
Installing Your Controller
Power Supply Inrush
During power-up, the MicroLogix 1200 power supply allows a brief
inrush current to charge internal capacitors. Many power lines and
control transformers can supply inrush current for a brief time. If the
power source cannot supply this inrush current, the source voltage
may sag momentarily.
The only effect of limited inrush current and voltage sag on the
MicroLogix 1200 is that the power supply capacitors charge more
slowly. However, the effect of a voltage sag on other equipment
should be considered. For example, a deep voltage sag may reset a
computer connected to the same power source. The following
considerations determine whether the power source must be required
to supply high inrush current:
• The power-up sequence of devices in a system.
• The amount of the power source voltage sag if the inrush
current cannot be supplied.
• The effect of voltage sag on other equipment in the system.
If the entire system is powered-up at the same time, a brief sag in the
power source voltage typically will not affect any equipment.
Loss of Power Source
The power supply is designed to withstand brief power losses without
affecting the operation of the system. The time the system is
operational during power loss is called “program scan hold-up time
after loss of power.” The duration of the power supply hold-up time
depends on the type and state of the I/O, but is typically between 10
milliseconds and 3 seconds. When the duration of power loss reaches
this limit, the power supply signals the processor that it can no longer
provide adequate dc power to the system. This is referred to as a
power supply shutdown. The processor then performs an orderly
shutdown of the controller.
Publication 1762-UM001D-EN-P - March 2004
Installing Your Controller
2-7
Input States on Power Down
The power supply hold-up time as described above is generally
longer than the turn-on and turn-off times of the inputs. Because of
this, the input state change from “On” to “Off” that occurs when
power is removed may be recorded by the processor before the
power supply shuts down the system. Understanding this concept is
important. The user program should be written to take this effect into
account.
Other Types of Line Conditions
Occasionally the power source to the system can be temporarily
interrupted. It is also possible that the voltage level may drop
substantially below the normal line voltage range for a period of time.
Both of these conditions are considered to be a loss of power for the
system.
Preventing Excessive Heat
For most applications, normal convective cooling keeps the controller
within the specified operating range. Ensure that the specified
temperature range is maintained. Proper spacing of components
within an enclosure is usually sufficient for heat dissipation.
In some applications, a substantial amount of heat is produced by
other equipment inside or outside the enclosure. In this case, place
blower fans inside the enclosure to assist in air circulation and to
reduce “hot spots” near the controller.
Additional cooling provisions might be necessary when high ambient
temperatures are encountered.
TIP
Do not bring in unfiltered outside air. Place the
controller in an enclosure to protect it from a
corrosive atmosphere. Harmful contaminants or dirt
could cause improper operation or damage to
components. In extreme cases, you may need to use
air conditioning to protect against heat build-up
within the enclosure.
Publication 1762-UM001D-EN-P - March 2004
2-8
Installing Your Controller
Master Control Relay
A hard-wired master control relay (MCR) provides a reliable means for
emergency machine shutdown. Since the master control relay allows
the placement of several emergency-stop switches in different
locations, its installation is important from a safety standpoint.
Overtravel limit switches or mushroom-head push buttons are wired
in series so that when any of them opens, the master control relay is
de-energized. This removes power to input and output device circuits.
Refer to the figures on pages 2-10 and 2-11.
ATTENTION
TIP
Never alter these circuits to defeat their function
since serious injury and/or machine damage could
result.
If you are using an external dc power supply,
interrupt the dc output side rather than the ac line
side of the supply to avoid the additional delay of
power supply turn-off.
The ac line of the dc output power supply should be
fused.
Connect a set of master control relays in series with
the dc power supplying the input and output
circuits.
Place the main power disconnect switch where operators and
maintenance personnel have quick and easy access to it. If you mount
a disconnect switch inside the controller enclosure, place the switch
operating handle on the outside of the enclosure, so that you can
disconnect power without opening the enclosure.
Whenever any of the emergency-stop switches are opened, power to
input and output devices should be removed.
When you use the master control relay to remove power from the
external I/O circuits, power continues to be provided to the
controller’s power supply so that diagnostic indicators on the
processor can still be observed.
The master control relay is not a substitute for a disconnect to the
controller. It is intended for any situation where the operator must
quickly de-energize I/O devices only. When inspecting or installing
terminal connections, replacing output fuses, or working on
equipment within the enclosure, use the disconnect to shut off power
to the rest of the system.
Publication 1762-UM001D-EN-P - March 2004
Installing Your Controller
TIP
2-9
Do not control the master control relay with the
controller. Provide the operator with the safety of a
direct connection between an emergency-stop
switch and the master control relay.
Using Emergency-Stop Switches
When using emergency-stop switches, adhere to the following points:
• Do not program emergency-stop switches in the controller
program. Any emergency-stop switch should turn off all
machine power by turning off the master control relay.
• Observe all applicable local codes concerning the placement
and labeling of emergency-stop switches.
• Install emergency-stop switches and the master control relay in
your system. Make certain that relay contacts have a sufficient
rating for your application. Emergency-stop switches must be
easy to reach.
• In the following illustration, input and output circuits are shown
with MCR protection. However, in most applications, only
output circuits require MCR protection.
The following illustrations show the Master Control Relay wired in a
grounded system.
TIP
In most applications input circuits do not require
MCR protection; however, if you need to remove
power from all field devices, you must include MCR
contacts in series with input power wiring.
Publication 1762-UM001D-EN-P - March 2004
2-10
Installing Your Controller
Schematic (Using IEC Symbols)
L1
L2
230V ac
Disconnect
MCR
Fuse
230V ac
I/O
Circuits
Isolation
Transformer
X1 115V ac
or 230V ac
Operation of either of these contacts will
remove power from the external I/O
circuits, stopping machine motion.
X2
Emergency-Stop
Push Button
Overtravel
Limit Switch
Fuse
Stop
Start
Master Control Relay (MCR)
Cat. No. 700-PK400A1
Suppressor
Cat. No. 700-N24
MCR
Suppr.
MCR
MCR
115V ac or
230V ac
I/O Circuits
dc Power Supply.
Use IEC 950/EN 60950
_
+
(Lo)
(Hi)
Line Terminals: Connect to terminals of Power
Supply (1762-L24AWA, 1762-L24BWA,
1762-L40AWA, 1762-L40BWA,
1762-L24AWAR, 1762-L24BWAR,
1762-L40AWAR, and 1762-L40BWAR).
Publication 1762-UM001D-EN-P - March 2004
MCR
Line Terminals: Connect to 24V dc terminals of
Power Supply (1762-L24BXB, 1762-L40BXB,
1762-L24BXBR, and 1762-L40BXBR).
24V dc
I/O
Circuits
Installing Your Controller
2-11
Schematic (Using ANSI/CSA Symbols)
L1
230V ac
L2
Disconnect
MCR
Fuse
Isolation
Transformer
X1
115V ac or
X2
230V ac
Fuse
Operation of either of these contacts will
remove power from the external I/O
circuits, stopping machine motion.
Emergency-Stop
Push Button
Overtravel
Limit Switch
230V ac
Output
Circuits
Master Control Relay (MCR)
Cat. No. 700-PK400A1
Suppressor
Cat. No. 700-N24
Start
Stop
MCR
Suppr.
MCR
MCR
dc Power Supply. Use
NEC Class 2 for UL
Listing.
_
(Lo)
(Hi)
Line Terminals: Connect to terminals of Power
Supply (1762-L24AWA, 1762-L24BWA,
1762-L40AWA, 1762-L40BWA, 1762-L24AWAR,
1762-L24BWAR, 1762-L40AWAR, and
1762-L40BWAR).
+
115V ac or
230V ac
I/O Circuits
MCR
24 V dc
I/O
Circuits
Line Terminals: Connect to 24V dc terminals of
Power Supply (1762-L24BXB, 1762-L40BXB,
1762-L24BXBR, and 1762-L40BXBR).
Publication 1762-UM001D-EN-P - March 2004
2-12
Installing Your Controller
Installing a Memory
Module and/or Real-Time
Clock
1. Remove the memory module port cover.
2. Align the connector on the memory module with the connector
pins on the controller.
3. Firmly seat the memory module into the controller.
Publication 1762-UM001D-EN-P - March 2004
Installing Your Controller
2-13
Controller Mounting
Dimensions
C
C
A
A
B
1762-L24AWA, 1762-L24BWA, 1762-L24BXB
1762-L24AWAR, 1762-L24BWAR, 1762-L24BXBR
B
1762-L40AWA, 1762-L40BWA, 1762-L40BXB
1762-L40AWAR, 1762-L40BWAR, 1762-L40BXBR
Table 2.1 Controller Dimensions
Dimension
1762-L24AWA
1762-L24AWAR
1762-L24BWA
1762-L24BXB
1762-L24BWAR 1762-L24BXBR
1762-L40AWA
1762-L40BWA
1762-L40AWAR 1762-L40BWAR
A
90 mm (3.5 in.)
90 mm (3.5 in.)
B
110 mm (4.33 in.)
160 mm (6.30 in.)
C
87 mm (3.43 in.)
87 mm (3.43 in.)
The controller mounts horizontally, with the expansion I/O extending
to the right of the controller. Allow 50 mm (2 in.) of space on all sides
of the controller system for adequate ventilation. Maintain spacing
from enclosure walls, wireways, adjacent equipment, etc., as shown
below.
MicroLogix
1200
1762 I/O
Side
1762 I/O
Top
1762 I/O
Controller and
Expansion I/O Spacing
1762-L40BXB
1762-L40BXBR
Side
Bottom
Publication 1762-UM001D-EN-P - March 2004
2-14
Installing Your Controller
Mounting the Controller
MicroLogix™ 1200 controllers are suitable for use in an industrial
environment when installed in accordance with these instructions.
Specifically, this equipment is intended for use in clean, dry
environments (Pollution degree 2(1)) and to circuits not exceeding
Over Voltage Category II(2) (IEC 60664-1).(3)
ATTENTION
Do not remove the protective debris shield until after
the controller and all other equipment in the panel
near the controller are mounted and wiring is
complete. Once wiring is complete, remove
protective debris shield. Failure to remove shield
before operating can cause overheating.
debris shield
ATTENTION
TIP
Publication 1762-UM001D-EN-P - March 2004
Electrostatic discharge can damage semiconductor
devices inside the controller. Do not touch the
connector pins or other sensitive areas.
For environments with greater vibration and shock
concerns, use the panel mounting method described
on page 2-16, rather than DIN rail mounting.
(1)
Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
(2)
Over Voltage Category II is the load level section of the electrical distribution system. At this level transient
voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.
(3)
Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
Installing Your Controller
2-15
DIN Rail Mounting
The maximum extension of the latch is 14 mm (0.55 in.) in the open
position. A flat-blade screwdriver is required for removal of the
controller. The controller can be mounted to EN50022-35x7.5 or
EN50022-35x15 DIN rails. DIN rail mounting dimensions are shown
below.
27.5 mm
(1.08 in.)
90 mm
(3.5 in.)
27.5 mm
(1.08 in.)
To install your controller on the DIN rail:
1. Mount your DIN rail. (Make sure that the placement of the
controller on the DIN rail meets the recommended spacing
requirements, see Controller and Expansion I/O Spacing on
page 2-13. Refer to the mounting template inside the back cover
of this document.)
2. Close the DIN latch, if it is open.
3. Hook the top slot over the DIN rail.
4. While pressing the controller down against the top of the rail,
snap the bottom of the controller into position.
5. Leave the protective debris shield attached until you are finished
wiring the controller and any other devices.
To remove your controller from the DIN rail:
1. Place a flat-blade screwdriver in the DIN rail latch at the bottom
of the controller.
2. Holding the controller, pry downward on the latch until the
latch locks in the open position.
3. Repeat steps 1 and 2 for the second DIN rail latch.
Publication 1762-UM001D-EN-P - March 2004
2-16
Installing Your Controller
4. Unhook the top of the DIN rail slot from the rail.
open
closed
Panel Mounting
Mount to panel using #8 or M4 screws. To install your controller using
mounting screws:
1. Remove the mounting template from inside the back cover of
the MicroLogix 1200 Programmable Controllers Installation
Instructions, publication 1762-IN006.
2. Secure the template to the mounting surface. (Make sure your
controller is spaced properly. See Controller and Expansion I/O
Spacing on page 2-13.)
3. Drill holes through the template.
4. Remove the mounting template.
5. Mount the controller.
6. Leave the protective debris shield in place until you are finished
wiring the controller and any other devices.
Debris Shield
Mounting Template
Publication 1762-UM001D-EN-P - March 2004
Installing Your Controller
2-17
1762 Expansion I/O
Dimensions
A
C
B
Dimension
Mounting 1762
Expansion I/O
Expansion I/O Module
A
90 mm (3.5 in.)
B
40 mm (1.57 in.)
C
87 mm (3.43 in.)
ATTENTION
During panel or DIN rail mounting of all devices, be
sure that all debris (metal chips, wire stands, etc.) is
kept from falling into the module. Debris that falls
into the module could cause damage when the
module is under power.
DIN Rail Mounting
The module can be mounted using the following DIN rails:
• 35 x 7.5 mm (EN 50 022 - 35 x 7.5), or
• 35 x 15 mm (EN 50 022 - 35 x 15).
Before mounting the module on a DIN rail, close the DIN rail latch.
Press the DIN rail mounting area of the module against the DIN rail.
The latch momentarily opens and locks into place.
Publication 1762-UM001D-EN-P - March 2004
2-18
Installing Your Controller
Use DIN rail end anchors (Allen-Bradley part number 1492-EA35 or
1492-EAH35) for vibration or shock environments. The following
illustration shows the location of the end anchors.
End Anchor
End Anchor
TIP
1762 expansion I/O must be mounted horizontally as
illustrated.
TIP
For environments with greater vibration and shock
concerns, use the panel mounting method described
below, instead of DIN rail mounting.
Panel Mounting
Use the dimensional template shown below to mount the module.
The preferred mounting method is to use two M4 or #8 panhead
screws per module. Mounting screws are required on every module.
For more than 2 modules: (number of modules - 1) x 40 mm (1.58 in.)
A = 95.86mm (3.774 in.)
1762-L24AWA, 1762-L24BWA, 1762-L24BXB
1762-L24AWAR, 1762-L24BWAR, 1762-L24BXBR
B = 145.8 mm (5.739 in.)
1762-L40AWA, 1762-L40BWA, 1762-L40BXB
1762-L40AWAR, 1762-L40BWAR, 1762-L40BXBR
Publication 1762-UM001D-EN-P - March 2004
A
B
40.4
(1.59)
1762 I/O
MicroLogix
1200
1762 I/O
100 90
(3.94) (3.54)
40.4
(1.59)
1762 I/O
14.5
(0.57)
NOTE: All dimensions are in mm (inches).
Hole spacing tolerance: ±0.4 mm (0.016 in.).
Installing Your Controller
Connecting Expansion I/O
2-19
The expansion I/O module is attached to the controller or another I/O
module by means of a flat ribbon cable after mounting, as shown
below.
Pull Loop
TIP
Use the pull loop on the connector to disconnect
modules. Do not pull on the ribbon cable.
TIP
Up to six expansion I/O modules can be connected
to a controller depending upon the power supply
loading.
ATTENTION
Remove power before removing or inserting an I/O
module. When you remove or insert a module with
power applied, an electrical arc may occur. An
electrical arc can cause personal injury or property
damage by:
• sending an erroneous signal to your system’s field
devices, causing the controller to fault
• causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on
both the module and its mating connector. Worn
contacts may create electrical resistance, reducing
product reliability.
Publication 1762-UM001D-EN-P - March 2004
2-20
Installing Your Controller
WARNING
EXPLOSION HAZARD
In Class I, Division 2 applications, the bus connector
must be fully seated and the bus connector cover
must be snapped in place.
In Class I, Division 2 applications, all modules must
be mounted in direct contact with each other as
shown on page 2-19. If DIN rail mounting is used, an
end stop must be installed ahead of the controller
and after the last 1762 I/O module.
Publication 1762-UM001D-EN-P - March 2004
Chapter
3
Wiring Your Controller
This chapter describes how to wire your controller and expansion
I/O. Topics include:
•
•
•
•
•
•
•
Wiring Requirements
wire requirements
using surge suppressors
grounding the controller
wiring diagrams
sinking and sourcing wiring diagrams
controller I/O wiring
expansion I/O wiring
Wiring Recommendation
ATTENTION
ATTENTION
Before you install and wire any device, disconnect
power to the controller system.
Calculate the maximum possible current in each
power and common wire. Observe all electrical
codes dictating the maximum current allowable for
each wire size. Current above the maximum ratings
may cause wiring to overheat, which can cause
damage.
United States Only: If the controller is installed within
a potentially hazardous environment, all wiring must
comply with the requirements stated in the National
Electrical Code 501-4 (b).
• Allow for at least 50 mm. (2 in.) between I/O wiring ducts or
terminal strips and the controller.
• Route incoming power to the controller by a path separate from
the device wiring. Where paths must cross, their intersection
should be perpendicular.
1
Publication 1762-UM001D-EN-P - March 2004
3-2
Wiring Your Controller
TIP
Do not run signal or communications wiring and
power wiring in the same conduit. Wires with
different signal characteristics should be routed by
separate paths.
• Separate wiring by signal type. Bundle wiring with similar
electrical characteristics together.
• Separate input wiring from output wiring.
• Label wiring to all devices in the system. Use tape,
shrink-tubing, or other dependable means for labeling purposes.
In addition to labeling, use colored insulation to identify wiring
based on signal characteristics. For example, you may use blue
for dc wiring and red for ac wiring.
Table 3.1 Wire Requirements
Wire Type
Wire Size (2 wire maximum per terminal screw)
Solid
Cu-90°C (194°F)
#14 to #22 AWG
Stranded
Cu-90°C (194°F)
#16 to #22 AWG
Wiring torque = 0.791 Nm (7 in-lb) rated
Wiring without Spade Lugs
When wiring without spade lugs, it is recommended to keep the
finger-safe covers in place. Loosen the terminal screw and route the
wires through the opening in the finger-safe cover. Tighten the
terminal screw making sure the pressure plate secures the wire.
Finger-Safe Cover
Wiring with Spade Lugs
The diameter of the terminal screw head is 5.5 mm (0.220 in.). The
input and output terminals of the MicroLogix 1200 controller are
designed for a 6.35mm (0.25 in.) wide spade (standard for #6 screw
for up to 14 AWG) or a 4 mm (metric #4) fork terminal.
Publication 1762-UM001D-EN-P - March 2004
Wiring Your Controller
3-3
When using spade lugs, use a small, flat-blade screwdriver to pry the
finger-safe cover from the terminal blocks as shown below. Then
loosen the terminal screw.
Using Surge Suppressors
Because of the potentially high current surges that occur when
switching inductive load devices, such as motor starters and solenoids,
the use of some type of surge suppression to protect and extend the
operating life of the controllers output contacts is required. Switching
inductive loads without surge suppression can significantly reduce the
life expectancy of relay contacts. By adding a suppression device
directly across the coil of an inductive device, you prolong the life of
the output or relay contacts. You also reduce the effects of voltage
transients and electrical noise from radiating into adjacent systems.
The following diagram shows an output with a suppression device.
We recommend that you locate the suppression device as close as
possible to the load device.
+dc or L1
VAC/DC
Suppression
Device
Out 0
Out 1
ac or dc
Outputs
Out 2
Out 3
Load
Out 4
Out 5
Out 6
Out 7
COM
dc COM or L2
Publication 1762-UM001D-EN-P - March 2004
3-4
Wiring Your Controller
If the outputs are dc, we recommend that you use an 1N4004 diode
for surge suppression, as shown below. For inductive dc load devices,
a diode is suitable. A 1N4004 diode is acceptable for most
applications. A surge suppressor can also be used. See Table 3.2 for
recommended suppressors. As shown below, these surge suppression
circuits connect directly across the load device.
+24V dc
VAC/DC
Out 0
Out 1
Out 2
Out 3
Relay or Solid
State dc Outputs Out 4
Out 5
Out 6
Out 7 24V dc common
COM
IN4004 Diode
(A surge suppressor
can also be used.)
Suitable surge suppression methods for inductive ac load devices
include a varistor, an RC network, or an Allen-Bradley surge
suppressor, all shown below. These components must be
appropriately rated to suppress the switching transient characteristic of
the particular inductive device. See the table on page 3-5 for
recommended suppressors.
Surge Suppression for Inductive ac Load Devices
Output Device
Output Device
Output Device
Surge
Suppressor
Varistor
Publication 1762-UM001D-EN-P - March 2004
RC Network
Wiring Your Controller
3-5
Recommended Surge Suppressors
Use the Allen-Bradley surge suppressors shown in the following table
for use with relays, contactors, and starters.
Table 3.2 Recommended Surge Suppressors
Device
Coil Voltage
Grounding the Controller
Suppressor Catalog
Number
Bulletin 509 Motor Starter
Bulletin 509 Motor Starter
120V ac
240V ac
599-K04(1)
599-KA04(1)
Bulletin 100 Contactor
Bulletin 100 Contactor
120V ac
240V ac
199-FSMA1(2)
199-FSMA2(2)
Bulletin 709 Motor Starter
120V ac
1401-N10(2)
Bulletin 700 Type R, RM Relays
ac coil
None Required
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
12V dc
12V dc
199-FSMA9
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
24V dc
24V dc
199-FSMA9
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
48V dc
48V dc
199-FSMA9
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
115-125V dc
115-125V dc
199-FSMA10
Bulletin 700 Type R Relay
Bulletin 700 Type RM Relay
230-250V dc
230-250V dc
199-FSMA11
Bulletin 700 Type N, P, or PK Relay
150V max, ac or DC
700-N24(2)
Miscellaneous electromagnetic
devices limited to 35 sealed VA
150V max, ac or DC
700-N24(2)
(1)
Varistor – Not recommended for use on relay outputs.
(2)
RC Type – Do not use with Triac outputs.
In solid-state control systems, grounding and wire routing helps limit
the effects of noise due to electromagnetic interference (EMI). Run the
ground connection from the ground screw of the controller to the
ground bus prior to connecting any devices. Use AWG #14 wire. For
AC-powered controllers, this connection must be made for safety
purposes.
Publication 1762-UM001D-EN-P - March 2004
3-6
Wiring Your Controller
ATTENTION
All devices connected to the RS-232 channel must be referenced to controller ground, or
be floating (not referenced to a potential other than ground). Failure to follow this
procedure may result in property damage or personal injury.
• For 1762-L24BWA, 1762-L40BWA, 1762-L24BWAR, and 1762-L40BWAR controllers:
The COM of the sensor supply is also connected to chassis ground internally. The
24V dc sensor power source should not be used to power output circuits. It should
only be used to power input devices.
• For 1762-L24BXB, 1762-L40BXB, 1762-L24BXBR, and 1762-L40BXBR controllers:
The VDC NEUT or common terminal of the power supply is also connected to
chassis ground internally.
This product is intended to be mounted to a well grounded mounting
surface such as a metal panel. Refer to the Industrial Automation
Wiring and Grounding Guidelines, publication 1770-4.1, for
additional information. Additional grounding connections from the
mounting tab or DIN rail, if used, are not required unless the
mounting surface cannot be grounded.
TIP
Use all four mounting positions for panel mounting
installation.
Grounding Stamping
ATTENTION
Publication 1762-UM001D-EN-P - March 2004
Remove the protective debris strip before applying
power to the controller. Failure to remove the strip
may cause the controller to overheat.
Wiring Your Controller
The following illustrations show the wiring diagrams for the
MicroLogix 1200 controllers. Controllers with dc inputs can be wired
as either sinking or sourcing inputs. (Sinking and sourcing does not
apply to ac inputs.) Refer to Sinking and Sourcing Wiring Diagrams on
page 3-10
The controller terminal block layouts are shown below. The shading
on the labels indicates how the terminals are grouped. A detail of the
groupings is shown in the table following the terminal block layouts.
TIP
This
symbol denotes a protective earth ground
terminal which provides a low impedance path
between electrical circuits and earth for safety
purposes and provides noise immunity
improvement. This connection must be made for
safety purposes on ac-powered controllers.
This
symbol denotes a functional earth ground
terminal which provides a low impedance path
between electrical circuits and earth for non-safety
purposes, such as noise immunity improvement.
Terminal Block Layouts
Figure 3.1 1762-L24AWA and 1762-L24AWAR
Group 0
IN 5
NC
COM
0
VAC
L1
VAC OUT 0 OUT 1 OUT 2
NEUT
IN 4
IN 6
IN 9
IN 11
IN 8 IN 10
IN 13
IN 12
VAC OUT 5 OUT 6 OUT 8
DC3
Gr o
up
4
VAC OUT 3 OUT 4 VAC OUT 7 OUT 9
DC 2
DC 4
2
VAC
DC 1
1
0
VAC
DC 0
IN 3
Gr o
up
IN 1
IN 7
3
IN 2
Gr o
up
Outputs
IN 0
Group 1
COM
1
Gr o
up
NC
Inputs
Gr o
up
Wiring Diagrams
3-7
Publication 1762-UM001D-EN-P - March 2004
3-8
Wiring Your Controller
Figure 3.2 1762-L24BWA and 1762-L24BWAR
Group 0
IN 1
IN 3
IN 5
IN 4
IN 6
VAC VAC
L1 NEUT OUT 0 OUT 1 OUT 2
IN 10
IN 12
VAC
DC 3 OUT 5 OUT 6 OUT 8
3
up
2
up
up
G ro
G ro
up
G ro
IN 8
IN 13
VAC
VAC
OUT 7 OUT 9
OUT 3 OUT 4
DC 2
DC 4
1
0
VAC VAC
DC 0 DC 1
IN 9 IN 11
G ro
Outputs
IN 7
4
IN 0
24 COM
COM
0
up
Inputs
Group 1
COM
IN 2
1
G ro
+24
VDC
The 24V dc sensor supply of the 1762-L24BWA and
1762-L24BWAR should not be used to power output
circuits. It should only be used to power input
devices (e.g. sensors, switches). See Master Control
Relay on page 2-8 for information on MCR wiring in
output circuits.
ATTENTION
Figure 3.3 1762-L24BXB and 1762-L24BXBR
Group 1
Group 0
IN 0
COM
0
IN 11
IN 13
IN 3
IN 4
IN 6
IN 8 IN 10
IN 12
OUT
0
OUT
1
OUT
2
OUT
4
OUT
6
OUT
8
VDC
2
OUT
3
OUT
5
VAC
DC 3
COM
2
OUT
7
1
up
G ro
up
G ro
OUT
9
3
VAC
DC 1
0
up
IN 9
IN 1
VAC
DC 0
G ro
IN 7
2
+24 VDC
VDC NEUT
IN 5
up
NC
IN 2
G ro
NC
COM
1
Figure 3.4 1762-L40AWA and 1762-L40AWAR
OUT
0
Publication 1762-UM001D-EN-P - March 2004
IN 14
IN 16
IN 18
IN 20
IN 22
IN 4
IN 9 IN 11
IN 13
IN 15
IN 17
IN 19
IN 21
OUT
1
OUT
2
OUT
5
OUT
8
OUT
10
VAC
DC 5
OUT
13
OUT
15
VAC
DC 1
up
1
G ro
G ro
up
0
VAC
DC 0
IN 12
VAC
DC 2
VAC
DC 3
OUT
3
OUT
4
OUT
7
OUT
6
OUT
9
VAC
DC 4
OUT
11
OUT
12
up
5
VAC
NEUT
IN 10
G ro
VAC
L1
IN 8
COM
IN 6
2
up
4
IN 3
IN 7
G ro
IN 1
IN 5
up
3
Outputs
IN 2
G ro
NC
IN 0
COM
0
Group 2
up
2
NC
Inputs
Group 1
COM
1
G ro
Group 0
OUT
14
IN 23
Wiring Your Controller
3-9
Figure 3.5 1762-L40BWA and 1762-L40BWAR
COM
2
IN 9
OUT
5
IN 13
OUT
8
OUT
7
VAC
DC 4
OUT
6
IN 15
OUT
10
OUT
9
IN 18
IN 17
VAC
DC 5
OUT
11
IN 20 IN 22
IN 19
IN 21 IN 23
OUT
15
OUT
13
OUT OUT
12
14
5
4
OUT
4
up
OUT
3
IN 11
IN 16
G ro
VAC
DC 3
2
up
0
G ro
up
G ro
OUT
2
VAC
DC 2
VAC
DC 1
1
VAC
DC 0
OUT
1
IN 6
IN 14
up
OUT
0
IN 4
IN 12
3
VAC VAC
L1 NEUT
Outputs
IN 3
IN 8 IN 10
up
IN 1
IN 7
up
24
COM
COM
0
IN 5
G ro
IN 0
Group 2
G ro
Inputs
Group 1
COM
IN 2
1
G ro
Group 0
+24
VDC
The 24V dc sensor supply of the 1762-L40BWA and
1762-L40BWAR should not be used to power output
circuits. It should only be used to power input
devices (e.g. sensors, switches). See Master Control
Relay on page 2-8 for information on MCR wiring in
output circuits.
ATTENTION
Figure 3.6 1762-L40BXB and 1762-L40BXBR
up
OUT
8
OUT
7
IN 13
COM
2
OUT
9
IN 15
OUT
10
VAC
DC 3
IN 16
IN 17
VAC
DC 4
OUT
11
IN 18
IN 20 IN 22
IN 19
OUT
13
IN 21 IN 23
OUT
15
OUT OUT
12
14
4
OUT
5
OUT
3
IN 11
IN 14
up
VDC
2
IN 9
OUT
6
OUT
4
1
VAC
DC 1
OUT
2
G ro
G ro
up
0
VAC
DC 0
OUT
1
COM
2
IN 6
IN 12
G ro
OUT
0
IN 4
IN 8 IN 10
3
+24
VDC
VDC NEUT
IN 3
IN 7
up
IN 1
IN 5
G ro
Outputs
COM
0
COM
1
2
NC
Group 2
Group 1
IN 2
up
Inputs
IN 0
G ro
Group 0
NC
Terminal Groupings
Table 3.3 Input Terminal Grouping
Controller
1762-L24AWA
1762-L24AWAR
1762-L24BWA
1762-L24BWAR
1762-L24BXB
1762-L24BXBR
1762-L40AWA
1762-L40AWAR
1762-L40BWA
1762-L40BWAR
Input Group
Group 0
Group 1
Group 0
Group 1
Group 0
Group 1
Group 0
Group 1
Group 2
Group 0
Group 1
Group 2
Inputs
Common Terminal
AC COM 0
AC COM 1
DC COM 0
DC COM 1
DC COM 0
DC COM 1
AC COM 0
AC COM 1
AC COM 2
DC COM 0
DC COM 1
DC COM 2
Input Terminal
I/0 through I/3
I/4 through I/13
I/0 through I/3
I/4 through I/13
I/0 through I/3
I/4 through I/13
I/0 through I/3
I/4 through I/7
I/8 through I/23
I/0 through I/3
I/4 through I/7
I/8 through I/23
Publication 1762-UM001D-EN-P - March 2004
3-10
Wiring Your Controller
Table 3.3 Input Terminal Grouping
Controller
1762-L40BXB
1762-L40BXBR
Input Group
Group 0
Group 1
Group 2
Inputs
Common Terminal
DC COM 0
DC COM 1
DC COM 2
Input Terminal
I/0 through I/3
I/4 through I/7
I/8 through I/23
Outputs
Voltage Terminal
VAC/VDC 0
VAC/VDC 1
VAC/VDC 2
VAC/VDC 3
VAC/VDC 4
VAC/VDC 0
VAC/VDC 1
VAC/VDC 2
VAC/VDC 3
VAC/VDC 4
VAC/VDC 0
VAC/VDC 1
VDC 2, VDC COM 2
VAC/VDC 3
VAC/VDC 0
VAC/VDC 1
VAC/VDC 2
VAC/VDC 3
VAC/VDC 4
VAC/VDC 5
VAC/VDC 0
VAC/VDC 1
VAC/VDC 2
VAC/VDC 3
VAC/VDC 4
VAC/VDC 5
VAC/VDC 0
VAC/VDC 1
VDC 2, VDC COM 2
VAC/VDC 3
VAC/VDC 4
Output Terminal
O/0
O/1
O/2 through O/3
O4 through O/5
O/6 through O/9
O/0
O/1
O/2 through O/3
O/4 through O/5
O/6 through O/9
O/0
O/1
O/2 through O/6
O/7 through O/9
O/0
O/1
O/2 through O/3
O/4 through O/7
O/8 through O/11
O/12 through O/15
O/0
O/1
O/2 through O/3
O/4 through O/7
O/8 through O/11
O/12 through O/15
O/0
O/1
O/2 through O/9
O/10 through O/11
O/12 through O/15
Table 3.4 Output Terminal Grouping
Controller
1762-L24AWA
1762-L24AWAR
1762-L24BWA
1762-L24BWAR
1762-L24BXB
1762-L24BXBR
1762-L40AWA
1762-L40AWAR
1762-L40BWA
1762-L40BWAR
1762-L40BXB
1762-L40BXBR
Sinking and Sourcing
Wiring Diagrams
Publication 1762-UM001D-EN-P - March 2004
Output Group
Group 0
Group 1
Group 2
Group 3
Group 4
Group 0
Group 1
Group 2
Group 3
Group 4
Group 0
Group 1
Group 2
Group 3
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 0
Group 1
Group 2
Group 3
Group 4
Group 5
Group 0
Group 1
Group 2
Group 3
Group 4
Any of the MicroLogix 1200 DC embedded input groups can be
configured as sinking or sourcing depending on how the DC COM is
Wiring Your Controller
3-11
wired on the group. Refer to pages 3-12 through 3-16 for sinking and
sourcing wiring diagrams.
Type
Definition
Sinking Input
The input energizes when high-level voltage is applied to the input
terminal (active high). Connect the power supply VDC (-) to the input
group’s COM terminal.
Sourcing Input
The input energizes when low-level voltage is applied to the input
terminal (active low). Connect the power supply VDC (+) to the input
group’s COM terminal.
The 24V dc sensor power source must not be used to
power output circuits. It should only be used to
power input devices (e.g. sensors, switches). See
Master Control Relay on page 2-8 for information on
MCR wiring in output circuits.
ATTENTION
1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L24AWAR,
1762-L24BWAR and 1762-L24BXBR Wiring Diagrams
In the following diagrams, lower case alphabetic
subscripts are appended to common-terminal
connections to indicate that different power sources
may be used for different isolated groups, if desired.
TIP
Figure 3.7 1762-L24AWA and 1762-L24AWAR Input Wiring Diagram (1)
L1a
L1b
L2b
NC
NC
COM
0
IN 0
IN 2
IN 1
COM
1
IN 3
IN 5
IN 4
IN 7
IN 6
IN 9
IN 8
IN 11
IN 10
IN 13
IN 12
L2a
L1a
(1)
L1b
“NC” terminals are not intended for use as connection points.
Publication 1762-UM001D-EN-P - March 2004
3-12
Wiring Your Controller
Figure 3.8 1762-L24BWA and 1762-L24BWAR Sinking Input Wiring Diagram
-DCb
+DCa
+DC
+24
VDC
+DCb
IN 0
24
COM COM 0
IN 2 COM 1
IN 1
IN 3
IN 5
IN 4
IN 7
IN 6
IN 9
IN 8
IN 11
IN 10
IN 13
IN 12
+DCb
-DC
-DCa
+DCa
Figure 3.9 1762-L24BWA and 1762-L24BWAR Sourcing Input Wiring Diagram
+DCb
-DCa
24V dc Sensor Power
-DCb
+DC
+24
VDC
IN 0
24
COM COM 0
IN 1
IN 2 COM 1
IN 3
IN 4
IN 5
IN 7
IN 6
IN 8
IN 9
IN 11
IN 10
IN 13
IN 12
-DCb
-DC +DCa
Publication 1762-UM001D-EN-P - March 2004
-DCa
Wiring Your Controller
3-13
Figure 3.10 1762-L24BXB and 1762-L24BXBR Sinking Input Wiring Diagram
-DCb
+DCa
NOT
USED
+DCb
IN 0
NOT COM 0
USED
IN 2 COM 1
IN 1
IN 3
IN 5
IN 4
IN 7
IN 6
IN 8
IN 9
IN 11
IN 10
IN 13
IN 12
+DCb
-DCa
+DCa
Figure 3.11 1762-L24BXB and 1762-L24BXBR Sourcing Input Wiring Diagram
-DCa
NOT
USED
0
+DCb
IN 2
NOT COM0
USED
IN 1
+DCa
-DCa
COM1
IN 3
IN 4
-DCb
IN 5
IN 6
IN 7
IN 8
IN 9
IN 11
IN 10
IN 13
IN 12
-DCb
Publication 1762-UM001D-EN-P - March 2004
3-14
Wiring Your Controller
Figure 3.12 1762-L24AWA , 1762-L24BWA, 1762-L24AWAR, and 1762-L24BWAR
Output Wiring Diagram
-DCa
L2a
L2b
L1c
L2c
L2d
L2
CR
CR
L1
VAC
L1
VAC OUT 0 OUT 1 OUT 2
NEUT
VAC
DC 0
VAC
DC 1
VAC
DC 2
VAC OUT 5 OUT 6 OUT 8
DC 3
OUT 3 OUT 4
VAC
DC 4
OUT 7 OUT 9
CR
CR
L2d
+DCa
L1a
L2b
L1b
L2c
L1d
Figure 3.13 1762-L24BXB and 1762-L24BXBR Output Wiring Diagram
-DCa -DCb
+DC
+24
VDC
L1d
-DCc
VDC
NEUT
OUT
0
VAC
DC 0
OUT
1
VAC
DC 1
CR
CR
OUT
2
OUT
4
VDC
2
OUT
3
CR
+DCa +DCb
Publication 1762-UM001D-EN-P - March 2004
L2d
-DC
+DCc
-DCc
OUT
6
OUT
5
VAC
DC 3
COM
2
OUT
8
OUT
7
OUT
9
CR
L2d
Wiring Your Controller
3-15
1762-L40AWA, 1762-L40BWA, 1762-L40BXB , 1762-L40AWAR,
1762-L40BWAR and 1762-L40BXBR Wiring Diagrams
Figure 3.14 1762-L40AWA and 1762-L40AWAR Input Wiring Diagram
L1a
L1b
L1c
L2b
NC
NC
IN 0
COM
0
IN 2
IN 1
COM
1
IN 3
IN 5
IN 7
IN 8 IN 10 IN 12 IN 14 IN 16 IN 18 IN 20 IN 22
COM
IN 6
2
IN 4
IN 9 IN 11 IN 13 IN 15 IN 17 IN 19 IN 21 IN 23
L2a
L2c
L1a
L1b
L1c
Figure 3.15 1762-L40BWA and 1762-L40BWAR Sinking Input Wiring Diagram
-DCb
+DC
+DCa
+24
VDC
IN 0
+DCb
+DCc
24
COM
COM
0
-DC
-DCa
COM
1
IN 2
IN 1
IN 3
IN 5
IN 4
IN 7
IN 6
IN 8
COM
2
IN 10
IN 9
IN 12
IN 11
IN 14
IN 13
IN 16
IN 15
IN 18
IN 17
IN 20
IN 19
IN 22
IN 21
IN 23
+DCc
-DCc
+DCb
+DCa
Figure 3.16 1762-L40BWA and 1762-L40BWAR Sourcing Input Wiring Diagram
+DCb
-DCb
-DCa
-DCc
+DC
+24
VDC
24
COM
IN 0
COM
0
-DC
IN 2
IN 1
-DCa
+DCa
COM
1
IN 3
IN 5
IN 4
IN 7
IN 6
IN 8
COM
2
-DCb
IN 10
IN 9
IN 12
IN 11
IN 14
IN 13
IN 16
IN 15
IN 18
IN 17
IN 20
IN 19
IN 22
IN 21
IN 23
-DCc
+DCc
Publication 1762-UM001D-EN-P - March 2004
3-16
Wiring Your Controller
Figure 3.17 1762-L40BXB and 1762-L40BXBR Sinking Input Wiring Diagram
-DCb +DCb
+DCa
+DCc
NOT
USED
NOT
USED
IN 0
COM
0
COM
1
IN 2
IN 1
IN 3
IN 5
IN 4
IN 7
IN 8
COM
2
IN 6
IN 10
IN 12
IN 9 IN 11
IN 14
IN 13
IN 16
IN 15
IN 18
IN 17
IN 20
IN 19
IN 22
IN 21
IN 23
+DCc
+DCa
-DCa
+DCb -DCc
Figure 3.18 1762-L40BXB and 1762-L40BXBR Sourcing Input Wiring Diagram
+DCb
-DCb
-DCa
-DCc
NOT
USED
NOT
SED
IN 0
COM
0
+DCa
IN 2
IN 1
COM
1
IN 3
IN 5
IN 7
IN 4
IN 6
IN 8
COM
2
IN 10
IN 9
IN 12
IN 11
IN 14
IN 13
IN 16
IN 15
IN 18
IN 17
IN 20
IN 19
IN 22
IN 21
-DC
-DCa
-DCb
+DCc
Figure 3.19 1762-L40AWA, 1762-L40BWA, 1762-L40AWAR, and 1762-L40BWAR
Output Wiring Diagram
L1d
L2a
L2b L2c
L2d
L1f
L2e
L2f
L2
CR
L1
VAC VAC
L1 NEUT
OUT
0
VAC
DC 0
OUT
1
VAC
DC 1
OUT
2
VAC
DC 2
VAC
DC 3
OUT
3
L2c
L1a
L1b L1c
CR
CR
OUT
5
OUT
4
OUT
7
OUT
6
OUT
8
VAC
DC 4
OUT
10
OUT
9
CR
CR
Publication 1762-UM001D-EN-P - March 2004
IN 23
L2d
L1e
L2e
CR
VAC
DC 5
OUT
13
OUT
15
OUT
11
OUT OUT
12
14
CR
CR
L2f
Wiring Your Controller
3-17
Figure 3.20 1762-L40BXB and 1762-L40BXBR Output Wiring Diagram
-DCa
-DC
-DCc
-DCb
CR
+DC
+24
VDC
VDC
NEUT
OUT
0
VAC
DC 0
OUT
1
VAC
DC 1
VDC
2
OUT
4
OUT
3
CR
+DCa +DCb
+DCc
Controller I/O Wiring
OUT
8
OUT
6
OUT
5
+DCe
-DCe
CR
CR
OUT
2
-DCd
COM
OUT
10
CR
VAC
DC 4
OUT
7
OUT
9
CR
CR
CR
-DCc
-DCd
VAC
DC3
OUT
11
OUT
15
OUT
13
OUT
12
OUT
14
CR
-DCe
+DCd
Minimizing Electrical Noise
Because of the variety of applications and environments where
controllers are installed and operating, it is impossible to ensure that
all environmental noise will be removed by input filters. To help
reduce the effects of environmental noise, install the MicroLogix 1200
system in a properly rated (i.e. NEMA) enclosure. Make sure that the
MicroLogix 1200 system is properly grounded.
A system may malfunction due to a change in the operating
environment after a period of time. We recommend periodically
checking system operation, particularly when new machinery or other
noise sources are installed near the Micrologix 1200 system.
Expansion I/O Wiring
Discrete Wiring Diagrams
The following illustrations show the discrete expansion I/O wiring
diagrams.
Publication 1762-UM001D-EN-P - March 2004
3-18
Wiring Your Controller
Figure 3.21 1762-IA8 Wiring Diagram
L1
IN 0
IN 1
IN 2
IN 3
100/120V ac
IN 4
IN 5
IN 6
IN 7
AC
COM
AC
COM
L2
Common
connected
internally.
Figure 3.22 1762-IQ8 Wiring Diagram
+DC (sinking)
IN 0
IN 1
IN 2
IN 3
24V dc
IN 4
IN 5
IN 6
IN 7
-DC (sinking)
+DC (sourcing)
Publication 1762-UM001D-EN-P - March 2004
DC
COM
DC
COM
Common connected
internally.
Wiring Your Controller
3-19
Figure 3.23 1762-IQ16 Wiring Diagram
+DC (Sinking)
-DC (Sourcing)
IN 0
IN 1
IN 2
IN 3
24V dc
IN 4
IN 5
IN 6
IN 7
DC
COM 0
+DC (Sinking)
-DC (Sourcing)
-DC (Sinking)
+DC (Sourcing)
IN 8
IN 9
IN 10
24V dc
IN 11
IN 12
IN 13
IN 14
IN 15
-DC (Sinking)
+DC (Sourcing)
DC
COM 1
Figure 3.24 1762-OA8 Wiring Diagram
OUT 0
CR
L2
L1
OUT 1
CR
OUT 3
CR
OUT 4
CR
L2
OUT 2
VAC
1
L1
VAC
0
CR
OUT 5
CR
OUT 6
OUT 7
Publication 1762-UM001D-EN-P - March 2004
3-20
Wiring Your Controller
Figure 3.25 1762-OB8 Wiring Diagram
+DC
+VDC
CR
OUT 0
CR
OUT 2
OUT 1
CR
OUT 3
CR
OUT 4
OUT 5
CR
OUT 6
CR
OUT 7
24V dc (source)
DC COM
-DC
Figure 3.26 1762-OB16 Wiring Diagram
VDC+
CR
OUT 0
CR
OUT 2
+DC
OUT 1
CR
OUT 3
CR
OUT 4
OUT 5
CR
OUT 6
CR
OUT 7
CR
OUT 8
CR
OUT 9
CR
OUT 11
CR
OUT 13
24V dc (source)
OUT 10
OUT 12
OUT 14
OUT 15
DC COM
-DC
Publication 1762-UM001D-EN-P - March 2004
Wiring Your Controller
3-21
Figure 3.27 1762-OW8 Wiring Diagram
L1 VAC1 +
VAC-VDC 1
OUT 0
CR
L1 VAC2 +
L2 DC2 COM
OUT 1
CR
OUT3
CR
OUT 4
CR
L2 DC1 COM
OUT 2
VAC-VDC2
CR
OUT 5
CR
OUT 6
OUT 7
Figure 3.28 1762-OW16 Wiring Diagram
OUT 0
CR
L1
VAC-VDC
0
OUT 1
CR
OUT 3
CR
OUT 5
CR
L2
OUT 2
OUT 4
CR
OUT 6
CR
OUT 7
+DC
VAC-VDC
1
OUT 8
CR
OUT 9
CR
OUT 11
CR
OUT 13
CR
OUT 15
CR
-DC
OUT 10
OUT 12
CR
OUT 14
Publication 1762-UM001D-EN-P - March 2004
3-22
Wiring Your Controller
Figure 3.29 1762-OX6I Wiring Diagram
L1-0
L1 OR +DC
OUT0 N.C.
L1 OR +DC
OUT0 N.O.
CR
OUT1 N.C.
CR
L1-1
OUT1 N.O.
L2 OR -DC
L1-2
L2 OR -DC
L2 OR -DC
CR
L1 OR +DC
OUT2 N.C.
OUT2 N.O.
L1 OR +DC
L2 OR -DC
CR
L1 OR +DC
L1-3
OUT3 N.C.
OUT3 N.O.
L1-4
OUT4 N.C.
CR
OUT4 N.O.
L2 OR -DC
L1-5
CR
L1 OR +DC
OUT5 N.C.
OUT5 N.O.
L2 OR -DC
Analog Wiring
System Wiring Guidelines
Consider the following when wiring your analog modules:
• The analog common (COM) is not connected to earth ground
inside the module. All terminals are electrically isolated from the
system.
• Channels are not isolated from each other.
• Use Belden™ 8761, or equivalent, shielded wire.
• Under normal conditions, the drain wire (shield) should be
connected to the metal mounting panel (earth ground). Keep
the shield connection to earth ground as short as possible.
Publication 1762-UM001D-EN-P - March 2004
Wiring Your Controller
3-23
• To ensure optimum accuracy for voltage type inputs, limit
overall cable impedance by keeping all analog cables as short as
possible. Locate the I/O system as close to your voltage type
sensors or actuators as possible.
• The module does not provide loop power for analog inputs. Use
a power supply that matches the input transmitter specifications.
1762-IF2OF2 Input Type Selection
Select the input type, current or voltage, using the switches located on
the module’s circuit board and the input type/range selection bits in
the Configuration Data File. Refer to MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual,
publication number 1762-RM001. You can access the switches through
the ventilation slots on the top of the module. Switch 1 controls
channel 0; switch 2 controls channel 1. The factory default setting for
both switch 1 and switch 2 is Current. Switch positions are shown
below.
Ch0 Ch1
ON
Switch Location
1
2
Voltage (OFF)
Current (ON) Default
1762-IF2OF2 Output Type Selection
The output type selection, current or voltage, is made by wiring to the
appropriate terminals, Iout or Vout, and by the type/range selection
bits in the Configuration Data File. Refer to MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual,
publication number 1762-RM001.
ATTENTION
Analog outputs may fluctuate for less than a second
when power is applied or removed. This
characteristic is common to most analog outputs.
While the majority of loads will not recognize this
short signal, it is recommended that preventive
measures be taken to ensure that connected
equipment is not affected.
Publication 1762-UM001D-EN-P - March 2004
3-24
Wiring Your Controller
1762-IF2OF2 Wiring
The following illustration shows the 1762-IF2OF2 analog expansion
I/O terminal block.
Figure 3.30 1762-IF2OF2 Terminal Block Layout
IN 0 (+)
IN 0 (-)
IN 1 (+)
IN 1 (-)
V Out 0
I Out 0
V Out 1
I Out 1
COM
COM
Common connected
internally.
Figure 3.31 Differential Sensor Transmitter Types
IN 0 (+)
Analog Sensor
IN 0 (-)
IN 1 (+)
IN 1 (-)
Load
I out 0
I out 1
V out 0
V out 1
COM
COM
Publication 1762-UM001D-EN-P - March 2004
Wiring Your Controller
3-25
Figure 3.32 Single-ended Sensor/Transmitter Types
2-Wire Transmitter
Power +
Supply(1)-
Transmitter
+
Module
-
IN +
IN COM
3-Wire Transmitter
Transmitter
Supply
Signal
Module
Power +
Supply(1)-
IN +
IN COM
4-Wire Transmitter
Power +
Supply(1)-
Transmitter
Supply
Signal
+
-
Module
+
-
IN +
IN COM
(1) All power supplies rated N.E.C. Class 2.
1762-IF4 Input Type Selection
Select the input type, current or voltage, using the switches located on
the module’s circuit board and the input type/range selection bits in
the Configuration Data File. Refer to MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual,
publication number 1762-RM001. You can access the switches through
the ventilation slots on the top of the module.
Ch0 Ch1
Switch Location
Ch2 Ch3
ON
ON
Voltage (OFF)
1
2
1
2
Current (ON Default)
Publication 1762-UM001D-EN-P - March 2004
3-26
Wiring Your Controller
Figure 3.33 1762-IF4 Terminal Block Layout
IN 0 (+)
IN 0 (-)
IN 1 (+)
IN 1 (-)
IN 2 (+)
IN 2 (-)
IN 3 (+)
IN 3 (-)
COM
Commons internally connected.
COM
Figure 3.34 Differential Sensor Transmitter Types
IN 0 (+)
Analog Sensor
IN 0 (-)
IN 1 (+)
IN 1 (-)
IN 2 (+)
IN 2 (-)
IN 3 (+)
IN 3 (-)
COM
COM
TIP
Publication 1762-UM001D-EN-P - March 2004
Grounding the cable shield at the module end only
usually provides sufficient noise immunity.
However, for best cable shield performance, earth
ground the shield at both ends, using a 0.01μF
capacitor at one end to block AC power ground
currents, if necessary.
Wiring Your Controller
3-27
Figure 3.35 Sensor/Transmitter Types
2-Wire Transmitter
Transmitter
+
+
Supply (1) -
-
Power
Module
IN +
IN COM
Transmitter
3-Wire Transmitter
Power
Supply(1)
Supply
Signal
+
-
Module
IN +
IN COM
4-Wire Transmitter
Power +
Supply(1) -
Transmitter
Signal
Supply
+
-
+
-
Module
IN +
IN COM
(1) All power supplies rated N.E.C. Class 2.
1762-OF4 Output Type Selection
The output type selection, current or voltage, is made by wiring to the
appropriate terminals, Iout or Vout, and by the type/range selection
bits in the Configuration Data File.
1762-OF4 Terminal Block Layout
V out 0
I out 0
V out 1
I out 1
V out 2
I out 2
V out 3
I out 3
COM
Commons connected internally
COM
Publication 1762-UM001D-EN-P - March 2004
3-28
Wiring Your Controller
1762-OF4 Wiring
I out 0
Current Load
I out 1
I out 2
I out 3
Voltage Load
V out 0
V out 1
V out 2
V out 3
COM
COM
Publication 1762-UM001D-EN-P - March 2004
Chapter
4
Communication Connections
This chapter describes how to communicate to your control system.
The method you use and cabling required to connect your controller
depends on what type of system you are employing. This chapter also
describes how the controller establishes communication with the
appropriate network. Topics include:
•
•
•
•
•
•
•
supported communication protocols
default communication configurations
using communications toggle push button
connecting to RS-232 port
connecting to DH-485 network
connecting to AIC+
DeviceNet communications
MicroLogix 1200 controllers with the additional communications port
(1762-L24AWAR, 1762-L24BWAR, 1762-L24BXBR, 1762-L40AWAR,
1762-L40BWAR, 1762-L40BXBR) offer advanced communications
options, providing a clean, cost effective solution for applications
requiring a network connection and HMI.
The additional communications port (Programmer/HMI Port) enables
two communication devices to be connected to the controller
simutaneously. For example, it provides local connectivity of an
operator interface or programming terminal such as DF1 PanelView
HMI, IBM-compatible personal computer using RSLogix 500
programming software, or 1747-PSD program storage device, and also
allows the primary port (Channel 0) to be connected to either a
network, a modem, or an ASCII device such as a barcode reader or
weigh scale, etc.
Supported Communication
Protocols
MicroLogix 1200 controllers support the following communication
protocols from the primary RS-232 communication channel, Channel
0:
•
•
•
•
•
1
DH-485
DF1 Full-Duplex
DF1 Half-Duplex
DF1 Radio Modem
Modbus Master and Slave
Publication 1762-UM001D-EN-P - March 2004
4-2
Communication Connections
• ASCII
1762-L24AWAR, 1762-L24BWAR, 1762-L24BXBR, 1762-L40AWAR,
1762-L40BWAR, and 1762-L40BXBR controllers are equipped with an
additional RS-232 communication channel called the Programmer/HMI
Port, which supports DH Full-Duplex only. The controller cannot
initiate messages through this port. It can only respond to messages
sent to it. All communication parameters are fixed and cannot be
changed by a user. See Default Communication Configuration on
page 4-2 for the configuration settings.
For more information on MicroLogix 1200 communications, refer to
the MicroLogix 1200 and MicroLogix 1500 Programmable Controllers
Instruction Set Reference Manual, publication number 1762-RM001.
Default Communication
Configuration
The MicroLogix 1200 has the following default communication
configuration. The same default configuration is applied for both
Channel 0 and the Programmer/HMI Port (for 1762-LxxxxxR only).
The configurations for the Programmer/HMI Port are fixed and you
cannot change them.
TIP
For Channel 0, the default configuration is present
when:
• The controller is powered-up for the first time.
• The communications toggle push button specifies
default communications (the DCOMM LED is on).
• An OS upgrade is completed.
See Appendix E for more information about communicating.
Table 4.1 DF1 Full-Duplex Default Configuration Parameters
Using the Communications
Toggle Push Button
Publication 1762-UM001D-EN-P - March 2004
Parameter
Default
Baud Rate
19.2K
Parity
none
Source ID (Node Address)
1
Control Line
no handshaking
Stop Bits
1
The Communications Toggle Push Button is located on the processor
under the processor door (if installed), as shown below.
Communication Connections
4-3
Use the Communications Toggle Push Button to change from the
user-defined communication configuration to the default
communications mode and back on Channel 0. The parameters of the
Programmer/HMI Port are fixed at the default communications
configuration. The Default Communications (DCOMM) LED operates
to show when the controller is in the default communications mode
(settings shown on page 4-2).
0
1
0
1
COM
COM
Communications Toggle
Push Button
TIP
The Communication Toggle Push Button must be
pressed and held for one second to activate.
The Communication Toggle Push Button only affects
the communication configuration of Channel 0.
Publication 1762-UM001D-EN-P - March 2004
4-4
Communication Connections
Connecting to the RS-232
Port
There are two ways to connect the MicroLogix 1200 programmable
controller to your personal computer using the DF1 protocol: using a
point-to-point connection, or using a modem. Descriptions of these
methods follow.
ATTENTION
All devices connected to the RS-232 channel must be
referenced to controller ground, or be floating (not
referenced to a potential other than ground). Failure
to follow this procedure may result in property
damage or personal injury.
• For 1762-L24BWA, 1762-L40BWA, 1762-L24BWAR
and 1762-L40BWAR controllers:
The COM of the sensor supply is also connected
to chassis ground internally. The 24V dc sensor
power source should not be used to power
output circuits. It should only be used to power
input devices.
• For 1762-L24BXB, 1762-L40BXB, 1762-L24BXBR
and 1762-L40BXBR controllers:
The VDC NEUT or common terminal of the
power supply is also connected to chassis ground
internally.
Table 4.2 Available Communication Cables
Communication Cables
Publication 1762-UM001D-EN-P - March 2004
Length
1761-CBL-PM02 Series C or later
2m (6.5 ft)
1761-CBL-HM02 Series C or later
2m (6.5 ft)
1761-CBL-AM00 Series C or later
45 cm (17.7 in)
1761-CBL-AP00 Series C or later
45 cm (17.7 in)
2707-NC8 Series A or later
2m (6.5 ft)
2707-NC9 Series B or later
15m (49.2 ft)
2707-NC10 Series B or later
2m (6.5 ft)
2707-NC11 Series B or later
2m (6.5 ft)
Communication Connections
4-5
Making a DF1 Point-to-Point Connection
You can connect the MicroLogix 1200 programmable controller to
your personal computer using a serial cable (1761-CBL-PM02) from
your personal computer’s serial port to the controller via Channel 0
and/or the Programmer/HMI Port (for 1762-LxxxxxR only). The
recommended protocol for this configuration is DF1 Full-Duplex.
We recommend using an Advanced Interface Converter (AIC+),
catalog number 1761-NET-AIC, as your optical isolator, as shown on
the following page. See page 4-14 for specific AIC+ cabling
information.
MicroLogix 1200
Channel 0 or Programmer/HMI Port
Personal Computer
1761-CBL-AM00 or 1761-CBL-HM02(1)
TERM
A
B
COM
SHLD
CHS GND
TX
TX
TX
PWR
DC SOURCE
CABLE
1747-CP3 or 1761-CBL-AC00
24V dc
MicroLogix 1200 provides power to the AIC+ or an
external power supply may be used.
EXTERNAL
(1) Series C or higher cables are required.
Using a Modem
You can use modems to connect a personal computer to one
MicroLogix 1200 controller (using DF1 Full-Duplex protocol), to
multiple controllers (using DF1 Half-Duplex protocol), or Modbus
RTU Slave protocol via Channel 0, as shown in the following
illustration. (See Appendix E for information on types of modems you
can use with the micro controllers.
IMPORTANT
Do not attempt to use DH-485 protocol through
modems under any circumstance.
Publication 1762-UM001D-EN-P - March 2004
4-6
Communication Connections
Personal Computer
Modem Cable
(straight-through)
MicroLogix 1200
Channel 0
Modem
Protocol Options
• DF1 Full-Duplex protocol (to 1 controller)
• DF1 Half-Duplex protocol (to multiple controllers)
• Modbus RTU Slave protocol
Optical Isolator
(recommended)
TERM
A
B
COM
SHLD
CHS GND
TX
TX
TX
PWR
DC SOURCE
CABLE
Modem
EXTERNAL
We recommend using an AIC+, catalog number 1761-NET-AIC, as
your optical isolator. See page 4-14 for specific AIC+ cabling
information.
Isolated Modem Connection
Using an AIC+ to isolate the modem is illustrated below.
24V dc
MicroLogix 1200
MicroLogix 1200 provides power to the AIC+ or an external power Channel 0
supply may be used. See Appendix F, System Loading and Heat
Dissipation.
TERM
A
B
COM
SHLD
CHS GND
TX
TX
TX
1761-CBL-AM00 or 1761-CBL-HM02(1)
Modem
PWR
DC SOURCE
CABLE
EXTERNAL
User-supplied modem cable
(1) Series C or higher cables are required.
For additional information on connections using the AIC+, refer to the
Advanced Interface Converter (AIC+) User Manual, publication
1761-6.4.
Publication 1762-UM001D-EN-P - March 2004
Communication Connections
4-7
Constructing Your Own Modem Cable
If you construct your own modem cable, the maximum cable length is
15.24 m (50 ft) with a 25-pin or 9-pin connector. Refer to the
following typical pinout for constructing a straight-through cable:
DTE Device
(AIC+,
MicroLogix,
SLC, PLC, etc.)
DCE Device
(Modem,
PanelView,
etc.)
9-Pin
25-Pin
9-Pin
3
TXD
TXD
2
3
2
RXD
RXD
3
2
5
GND
GND
7
5
1
DCD
DCD
8
1
4
DTR
DTR
20
4
6
DSR
DSR
6
6
8
CTS
CTS
5
8
7
RTS
RTS
4
7
Constructing Your Own Null Modem Cable
If you construct your own null modem cable, the maximum cable
length is 15.24 m (50 ft) with a 25-pin or 9-pin connector. Refer to the
following typical pinout:
DTE Device
(AIC+,
MicroLogix,
SLC, PLC, etc.)
9-Pin
3
TXD
2
RXD
5
GND
1
DCD
4
DTR
6
DSR
8
CTS
7
RTS
DCE Device
(Modem,
PanelView, etc.)
TXD
RXD
GND
DCD
DTR
DSR
CTS
RTS
25-Pin
2
3
7
8
20
6
5
4
9-Pin
3
2
5
1
4
6
8
7
Publication 1762-UM001D-EN-P - March 2004
4-8
Communication Connections
Connecting to a DF1 Half-Duplex Network
Use the following diagram for DF1 Half-Duplex Master-Slave protocol
without hardware handshaking.
SLC 5/03
processor
MicroLogix 1200
DF1
Master
CH0
(3)
(1)
CH0
0
1
COM
1761-CBL-AM00 or 1761-CBL-HM02(4)
1761-CBL-AP00 or 1761-CBL-PM02(4)
DF1 Slave
(2)
radio modem
or lease line
straight 9-25 pin cable
(3)
(2)
AIC+
(1)
straight 9-25
pin cable
MicroLogix 1200
radio
modem or
lease line CH0 to port 1
or port 2
1761-CBL-AM00 or
1761-CBL-HM02 to
1761-CBL-AP00 or
DF1
controller(4)
1761-CBL-PM02 to controller(4)
Slave
MicroLogix 1200
0
CH0 to port 1
or port 2
0
1
COM
DF1 Slave
(3)
(1)
RS-485 DF1 Half-Duplex
(2)
AIC+
1
COM
(3)
1761-CBL-AM00 or
1761-CBL-HM02 to
controller(4)
RS-485 DF1 Half-Duplex
(1) DB-9 RS-232 port
(2) mini-DIN 8 RS-232 port
(3) RS-485 port
(4) Series C or higher cables are required.
Publication 1762-UM001D-EN-P - March 2004
(1)
(2)
AIC+
1761-CBL-AP00 or
1761-CBL-PM02 to
controller(4)
Communication Connections
Connecting to a DH-485
Network
4-9
The following illustration shows how to connect to a DH-485
network.
MicroLogix 1200
MicroLogix DH-485 Network
PC
connection from port 1 or port 2
to MicroLogix Channel 0
1761-CBL-AM00
or 1761-CBL-HM02(4)
AIC+
(3)
PC to port 1
or port 2
(2)
TERM
A
B
SHLD
CHS GND
TX
(1)
1761-CBL-AP00
or 1761-CBL-PM02
1761-CBL-AP00
or 1761-CBL-PM02(4)
COM
TX
TX
PWR
DC SOURCE
CABLE
AIC+
EXTERNAL
(3)
(2)
TERM
A
B
COM
SHLD
24V dc
(user supply required if Port 2 is
not connected to a controller)
Belden, shielded,
twisted-pair cable
(see table below)
(1) DB-9 RS-232 port
(2) mini-DIN 8 RS-232 port
(3) RS-485 port
(4) Series C or higher cables are required.
CHS GND
TX
TX
(1)
TX
PWR
DC SOURCE
CABLE
EXTERNAL
1747-CP3
or 1761-CBL-AC00
24V dc
(user supplied)
Recommended Tools
To connect a DH-485 network, you need tools to strip the shielded
cable and to attach the cable to the AIC+ Advanced Interface
Converter. We recommend the following equipment (or equivalent):
Table 4.3 Working with Cable for DH-485 Network
Description
Part Number
Manufacturer
Shielded Twisted Pair Cable
#3106A or #9842
Belden
Stripping Tool
45-164
Ideal Industries
1/8” Slotted Screwdriver
Not Applicable
Not Applicable
DH-485 Communication Cable
The suggested DH-485 communication cable is either Belden #3106A
or #9842. The cable is jacketed and shielded with one or two
twisted-wire pairs and a drain wire.
One pair provides a balanced signal line and one additional wire is
used for a common reference line between all nodes on the network.
Publication 1762-UM001D-EN-P - March 2004
4-10
Communication Connections
The shield reduces the effect of electrostatic noise from the industrial
environment on network communication.
The communication cable consists of a number of cable segments
daisy-chained together. The total length of the cable segments cannot
exceed 1219 m (4000 ft). However, two segments can be used to
extend the DH-485 network to 2438 m (8000 ft). For additional
information on connections using the AIC+, refer to the Advanced
Interface Converter (AIC+) User Manual, publication 1761-6.4.
When cutting cable segments, make them long enough to route them
from one AIC+ to the next, with sufficient slack to prevent strain on
the connector. Allow enough extra cable to prevent chafing and
kinking in the cable.
Use these instructions for wiring the Belden #3106A or #9842 cable.
(See Cable Selection Guide on page 4-14 if you are using standard
Allen-Bradley cables.)
Connecting the Communication Cable to the DH-485 Connector
TIP
A daisy-chained network is recommended. Do not
make the incorrect connection shown below:
Belden #3106A
or #9842
Connector
Belden #3106A or Belden #3106A or
#9842
#9842
Connector
Connector
Incorrect
Single Cable Connection
When connecting a single cable to the DH-485 connector, use the
following diagram.
Publication 1762-UM001D-EN-P - March 2004
Communication Connections
6 Termination
5A
4B
3 Common
2 Shield
1 Chassis Ground
Orange with White Stripes
White with Orange Stripes
Shrink Tubing Recommended
4-11
Blue (#3106A) or
Blue with White Drain Wire
Stripes (#9842)
Multiple Cable Connection
When connecting multiple cables to the DH-485 connector, use the
following diagram.
to Previous Device
to Next Device
Table 4.4 Connections using Belden #3106A Cable
For this Wire/Pair
Connect this Wire
To this Terminal
Shield/Drain
Non-jacketed
Terminal 2 - Shield
Blue
Blue
Terminal 3 - (Common)
White/Orange
White with Orange Stripe
Terminal 4 - (Data B)
Orange with White Stripe
Terminal 5 - (Data A)
Table 4.5 Connections using Belden #9842 Cable
For this Wire/Pair
Connect this Wire
To this Terminal
Shield/Drain
Non-jacketed
Terminal 2 - Shield
Blue/White
White with Blue Stripe
Cut back - no connection(1)
Blue with White Stripe
Terminal 3 - (Common)
White with Orange Stripe
Terminal 4 - (Data B)
Orange with White Stripe
Terminal 5 - (Data A)
White/Orange
(1)
To prevent confusion when installing the communication cable, cut back the white with blue stripe wire
immediately after the insulation jacket is removed. This wire is not used by DH-485.
Publication 1762-UM001D-EN-P - March 2004
4-12
Communication Connections
Grounding and Terminating the DH-485 Network
Only one connector at the end of the link must have Terminals 1 and
2 jumpered together. This provides an earth ground connection for
the shield of the communication cable.
Both ends of the network must have Terminals 5 and 6 jumpered
together, as shown below. This connects the termination impedance
(of 120 ohm) that is built into each AIC+ as required by the DH-485
specification.
End-of-Line Termination
Jumper
Jumper
Belden #3106A or #9842 Cable
1219 m (4000ft) Maximum
Jumper
Connecting the AIC+
The AIC+, catalog number 1761-NET-AIC, enables a MicroLogix 1200
to connect to a DH-485 network. The AIC+ has two RS-232 ports and
one isolated RS-485 port. Typically, there is one AIC+ for each
MicroLogix 1200. When two MicroLogix controllers are closely
positioned, you can connect a controller to each of the RS-232 ports
on the AIC+.
The AIC+ can also be used as an RS-232 isolator, providing an
isolation barrier between the MicroLogix 1200 communications port
and any equipment connected to it (i.e. personal computer, modem,
etc.).
Publication 1762-UM001D-EN-P - March 2004
Communication Connections
4-13
The following figure shows the external wiring connections and
specifications of the AIC+.
3
2
AIC+ Advanced Interface Converter
(1761-NET-AIC)
4
1
5
Publication 1762-UM001D-EN-P - March 2004
4-14
Communication Connections
Item
Description
1
Port 1 - DB-9 RS-232, DTE
2
Port 2 - mini-DIN 8 RS-232 DTE
3
Port 3 - RS-485 Phoenix plug
4
DC Power Source selector switch
(cable = port 2 power source,
external = external power source connected to item 5)
5
Terminals for external 24V dc power supply and chassis ground
For additional information on connecting the AIC+, refer to the
Advanced Interface Converter (AIC+) User Manual, publication
1761-6.4.
Cable Selection Guide
1761-CBL-PM02 (2)
1761-CBL-AP00(2)
Cable
Length
Connections from
to AIC+
External
Power Supply
Required(1)
Power
Selection
Switch
Setting(1)
1761-CBL-AP00(2)
45 cm (17.7 in)
SLC 5/03 or SLC 5/04 processors, ch 0
port 2
yes
external
1761-CBL-PM02(2)
2m (6.5 ft)
MicroLogix 1000, 1200, or 1500
port 1
yes
external
PanelView 550 through NULL modem
adapter
port 2
yes
external
DTAM Plus / DTAM Micro
port 2
yes
external
PC COM port
port 2
yes
external
(1)
External power supply required unless the AIC+ is powered by the device connected to port 2, then the selection switch should be set to cable.
(2)
Series C or higher cables are required.
1761-CBL-HM02(2)
1761-CBL-AM00(2)
Cable
Length
Connections from
to AIC+ External
Power Supply
Required(1)
Power
Selection
Switch Setting
1761-CBL-AM00(2)
1761-CBL-HM02(2)
45 cm (17.7 in)
2m (6.5 ft)
MicroLogix 1000, 1200, or 1500
port 2
no
cable
to port 2 on another AIC+
port 2
yes
external
(1)
External power supply required unless the AIC+ is powered by the device connected to port 2, then the selection switch should be set to cable.
Publication 1762-UM001D-EN-P - March 2004
Communication Connections
(2)
4-15
Series C or higher cables are required.
1747-CP3
1761-CBL-AC00
Cable
Length
Connections from
to AIC+ External
Power Supply
Required(1)
Power
Selection
Switch
Setting(1)
1747-CP3
3m (9.8 ft)
SLC 5/03 or SLC 5/04 processor, channel
0
port 1
yes
external
1761-CBL-AC00(1)
45 cm (17.7 in)
PC COM port
port 1
yes
external
PanelView 550 through NULL modem
adapter
port 1
yes
external
DTAM Plus / DTAM Micro™
port 1
yes
external
Port 1 on another AIC+
port 1
yes
external
(1)
External power supply required unless the AIC+ is powered by the device connected to port 2, then the selection switch should be set to cable.
user-supplied cable
Cable
Length
Connections from
to AIC+ External
Power Supply
Required(1)
Power
Selection
Switch
Setting(1)
straight 9-25 pin
—
modem or other communication device
port 1
external
(1)
yes
External power supply required unless the AIC+ is powered by the device connected to port 2, then the selection switch should be set to cable.
1761-CBL-AS09
1761-CBL-AS03
Cable
Length
Connections from
to AIC+ External
Power Supply
Required(1)
Power
Selection
Switch
Setting(1)
1761-CBL-AS03
3m (9.8 ft)
SLC 500 Fixed,
port 3
yes
external
1761-CBL-AS09
9.5m (31.17 ft)
SLC 5/01, SLC 5/02, and SLC 5/03
processors
port 3
yes
external
PanelView 550 RJ45 port
(1)
External power supply required unless the AIC+ is powered by the device connected to port 2, then the selection switch should be set to cable.
Publication 1762-UM001D-EN-P - March 2004
4-16
Communication Connections
1761-CBL-PM02 Series C (or equivalent) Cable Wiring Diagram
Programming
Device
Controller
9-Pin D-Shell
8-Pin Mini Din
9
RI
24V
1
8
CTS
GND
2
7
RTS
RTS
3
6
DSR
RXD
4
5
GND
DCD
5
4
DTR
CTS
6
3
TXD
TXD
7
2
RXD
GND
8
1
DCD
Recommended User-Supplied Components
These components can be purchased from your local electronics
supplier.
Table 4.6 User Supplied Components
Component
Recommended Model
external power supply and chassis ground
power supply rated for 20.4 to 28.8V dc
NULL modem adapter
standard AT
straight 9-25 pin RS-232 cable
see table below for port information if
making own cables
1761-CBL-AP00 or 1761-CBL-PM02
Port 1
DB-9 RS-232
7
1
2
8
3
4
9
5
6
Port 2
cable straight D connector
6 7 8
5
4
3
5
3
4
1 2
Publication 1762-UM001D-EN-P - March 2004
6
2
1
Port 3
RS-485 connector
Communication Connections
4-17
Table 4.7 AIC+ Terminals
Pin Port 1: DB-9 RS-232
Port 3: RS-485
Connector
1
chassis ground
2
3
4
5
6
7
8
9
Port 2(2): (1761-CBL-PM02
cable)
received line signal detector 24V dc
(DCD)
received data (RxD)
ground (GND)
transmitted data (TxD)
request to send (RTS)
DTE ready (DTR)(1)
signal common (GND)
received data (RxD)(3)
received line signal detector
(DCD)
DCE ready (DSR)(1)
request to send (RTS)
clear to send (CTS)
not applicable
clear to send (CTS)(3)
transmitted data (TxD)
ground (GND)
not applicable
cable shield
signal ground
DH-485 data B
DH-485 data A
termination
not applicable
not applicable
not applicable
(1)
On port 1, pin 4 is electronically jumpered to pin 6. Whenever the AIC+ is powered on, pin 4 will match the
state of pin 6.
(2)
An 8-pin mini DIN connector is used for making connections to port 2. This connector is not commercially
available. If you are making a cable to connect to port 2, you must configure your cable to connect to the
Allen-Bradley cable shown above.
(3)
In the 1761-CBL-PM02 cable, pins 4 and 6 are jumpered together within the DB-9 connector.
Safety Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B,
C, D or non-hazardous locations only.
WARNING
EXPLOSION HAZARD
AIC+ must be operated from an external power
source.
This product must be installed in an enclosure. All
cables connected to the product must remain in the
enclosure or be protected by conduit or other
means.
See Safety Considerations on page 2-3 for additional information.
Publication 1762-UM001D-EN-P - March 2004
4-18
Communication Connections
Installing and Attaching the AIC+
1. Take care when installing the AIC+ in an enclosure so that the
cable connecting the MicroLogix 1200 controller to the AIC+
does not interfere with the enclosure door.
2. Carefully plug the terminal block into the RS-485 port on the
AIC+ you are putting on the network. Allow enough cable slack
to prevent stress on the plug.
3. Provide strain relief for the Belden cable after it is wired to the
terminal block. This guards against breakage of the Belden cable
wires.
Powering the AIC+
In normal operation with the MicroLogix 1200 programmable
controller connected to port 2 of the AIC+, the controller powers the
AIC+. Any AIC+ not connected to a controller requires a 24V dc
power supply. The AIC+ requires 120 mA at 24V dc.
If both the controller and external power are connected to the AIC+,
the power selection switch determines what device powers the AIC+.
ATTENTION
If you use an external power supply, it must be
24V dc (-15%/+20%). Permanent damage results if a
higher voltage supply is used.
Set the DC Power Source selector switch to EXTERNAL before
connecting the power supply to the AIC+. The following illustration
shows where to connect external power for the AIC+.
Bottom View
24VDC
DC
NEUT
CHS
GND
Publication 1762-UM001D-EN-P - March 2004
Communication Connections
ATTENTION
4-19
Always connect the CHS GND (chassis ground)
terminal to the nearest earth ground. This connection
must be made whether or not an external 24V dc
supply is used.
Power Options
Below are two options for powering the AIC+:
• Use the 24V dc user power supply built into the MicroLogix
1200 controller. The AIC+ is powered through a hard-wired
connection using a communication cable (1761-CBL-HM02, or
equivalent) connected to port 2.
• Use an external DC power supply with the following
specifications:
– operating voltage: 24V dc (-15%/+20%)
– output current: 150 mA minimum
– rated NEC Class 2
Make a hard-wired connection from the external supply to the
screw terminals on the bottom of the AIC+.
ATTENTION
If you use an external power supply, it must be 24V
dc (-15%/+20%). Permanent damage results if
miswired with the wrong power source.
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4-20
Communication Connections
DeviceNet Communications
You can connect a MicroLogix 1200 to a DeviceNet network using the
DeviceNet Interface (DNI), catalog number 1761-NET-DNI. For
additional information on using the DNI, refer to the DeviceNet
Interface User Manual, publication 1761-6.5. The following figure
shows the external wiring connections of the DNI.
V–
CAN_L
NET
SHIELD
CAN_H
V+
DeviceNet Node (Port 1)
(Replacement connector
part no. 1761-RPL-RT00)
Use this write-on
area to mark the
DeviceNet node
address.
MOD
NODE
DANGER
TX/RX
GND
RS-232 (Port 2)
Cable Selection Guide(1)
1761-CBL-HM02
1761-CBL-AM00
Cable
Length
Connections from
to DNI
1761-CBL-AM00
1761-CBL-HM02
45 cm (17.7 in)
2m (6.5 ft)
MicroLogix 1000
port 2
MicroLogix 1200
port 2
1761-CBL-PM02
1761-CBL-AP00
Cable
Length
Connections from
to DNI
1761-CBL-AP00
1761-CBL-PM02
45 cm (17.7 in)
2m (6.5 ft)
SLC 5/03 or SLC 5/04 processors,
channel 0
port 2
PC COM port
port 2
(1)
Publication 1762-UM001D-EN-P - March 2004
(2)
Series C (or higher) cables are required.
Chapter
5
Using Trim Pots
Trim Pot Operation
The processor has two trimming potentiometers (trim pots) which
allow modification of data within the controller. Adjustments to the
trim pots change the value in the corresponding Trim Pot Information
(TPI) register. The data value of each trim pot can be used throughout
the control program as timer, counter, or analog presets depending
upon the requirements of the application.
The trim pots are located below the memory module port cover and
to the right of the communications port, as shown below.
Trim Pot 0
Trim Pot 1
0
1
COM
Use a small flathead screwdriver to turn the trim pots. Adjusting their
value causes data to change within a range of 0 to 250 (fully
clockwise). The maximum rotation of each trim pot is three-quarters,
as shown below. Trim pot stability over time and temperature is
typically ±2 counts.
Minimum
Maximum
Trim pot file data is updated continuously whenever the controller is
powered-up.
1
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5-2
Using Trim Pots
Trim Pot Information Function File
The composition of the Trim Pot Information (TPI) Function File is
described in the MicroLogix 1200 and 1500 Programmable Controllers
Instruction Set Reference Manual, publication 1762-RM001.
Error Conditions
Error conditions of the TPI Function File are described in the
MicroLogix 1200 and 1500 Programmable Controllers Instruction Set
Reference Manual, publication 1762-RM001.
Publication 1762-UM001D-EN-P - March 2004
Chapter
6
Using Real-Time Clock and Memory Modules
TIP
For more information on “Real-Time Clock Function
File” and “Memory Module Information File” refer to
the MicroLogix 1200 and 1500 Programmable
Controllers Instruction Set Reference Manual,
publication 1762-RM001.
Three modules with different levels of functionality are available for
use with the MicroLogix 1200 controller.
Catalog Number
Function
1762-RTC
Real-Time Clock
1762-MM1
Memory Module
1762-MM1RTC
Memory Module and Real-Time Clock
Real-Time Clock Operation Removal/Insertion Under Power
At power-up and when the controller enters a run or test mode, the
controller determines if a real-time clock module (RTC) is present. If
an RTC is present, its values (date, time and status) are written to the
RTC Function File in the controller.
The RTC module can be installed or removed at any time without risk
of damage to either the module or the controller. If an RTC is installed
while the MicroLogix 1200 is in a run or test mode, the module is not
recognized until either a power cycle occurs or until the controller is
placed in a non-executing mode (program mode, suspend mode or
fault condition).
Removal of the RTC during run mode is detected within one program
scan. Removal of the RTC while in run mode causes the controller to
write zeros to the RTC Function File.
The following table indicates the accuracy of the RTC for various
temperatures.
1
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6-2
Using Real-Time Clock and Memory Modules
Table 6.1 RTC Accuracy
Ambient Temperature
Accuracy(1)
0°C (+32°F)
+34 to -70 seconds/month
+25°C (+77°F)
+36 to -68 seconds/month
+40°C (+104°F)
+29 to -75 seconds/month
+55°C (+131°F)
-133 to -237 seconds/month
(1)
These numbers are maximum worst case values over a 31-day month.
Writing Data to the Real-Time Clock
When valid data is sent to the real-time clock from the programming
device or another controller, the new values take effect immediately.
The real-time clock does not recognize or accept invalid date or time
data.
Use the Disable Clock button in your RSLogix programming software
to disable the real-time clock before storing a module. This decreases
the drain on the RTC battery during storage.
RTC Battery Operation
The real-time clock has an internal battery that is not replaceable. The
RTC Function File features a battery low indicator bit (RTC:0/BL),
which shows the status of the RTC battery. When the battery is low,
the indicator bit is set (1). This means that the battery may fail within
14 days and the real-time clock module needs to be replaced. When
the battery low indicator bit is clear (0), the battery level is acceptable
or a real-time clock is not attached.
If the RTC battery is low and the controller is powered, the RTC
operates normally. If the controller power is removed and the RTC
battery is low, RTC data is lost.
Life Span
Operating Temperature
Storage Temperature(1)
5 years
+0°C to +40°C (+32°F to +104°F)
-40°C to +60°C (-40°F to +140°F)
(1)
Publication 1762-UM001D-EN-P - March 2004
Stored for six months.
Using Real-Time Clock and Memory Modules
ATTENTION
Memory Module Operation
6-3
Operating with a low battery indication for more
than 14 days may result in invalid RTC data unless
power is on continuously.
The memory module supports the following features:
•
•
•
•
•
User Program and Data Back-up
User Program Compare
Data File Download Protection
Memory Module Write Protection
Removal/Insertion Under Power
ATTENTION
Electrostatic discharge can damage the Memory
Module. Do not touch the connector pins or other
sensitive areas.
User Program and Data Back-up
The memory module provides a simple and flexible program/data
transport mechanism, allowing the user to transfer the program and
data to the controller without the use of a personal computer and
programming software.
The memory module can store one user program at a time.
During program transfers to or from the memory module, the
controller’s RUN LED flashes.
Publication 1762-UM001D-EN-P - March 2004
6-4
Using Real-Time Clock and Memory Modules
Program Compare
The memory module can also provide application security, allowing
you to specify that if the program stored in the memory module does
not match the program in the controller, the controller will not enter
an executing (run or test) mode. To enable this feature, set the S:2/9
bit in the system status file. See “Status System File” in the MicroLogix
1200 and 1500 Programmable Controllers Instruction Set Reference
Manual, Publication 1762-RM001 for more information.
Data File Download Protection
The memory module supports data file download protection. This
allows user data to be saved (not overwritten) during a download.
TIP
Data file download protection is only functional if the
processor does not have a fault, size of all protected
data files in the memory module exactly match the
size of protected data files within the controller, and
all protected data files are of the same type. See
“Protecting Data Files During Download” in the
MicroLogix 1200 and 1500 Programmable Controllers
Instruction Set Reference Manual, Publication
1762-RM001.
Memory Module Write Protection
The memory module supports write-once, read-many behavior. Write
protection is enabled using your programming software.
IMPORTANT
Once set, write protection cannot be removed. A
change cannot be made to the control program
stored in a write protected memory module. If a
change is required, use a different memory module.
Removal/Insertion Under Power
The memory module can be installed or removed at any time without
risk of damage to either the memory module or the controller. If a
memory module is installed while the MicroLogix 1200 is executing,
the memory module is not recognized until either a power cycle
occurs, or until the controller is placed in a non-executing mode
(program mode, suspend mode or fault condition).
Publication 1762-UM001D-EN-P - March 2004
Appendix
A
Specifications
Controller Specifications
Table A.1 General Specifications
Description
1762L24AWA
L24AWAR
L24BWA
L24BWAR
L24BXB
L24BXBR
L40AWA
L40AWAR
L40BWA
L40BWAR
Dimensions
Height: 90 mm,
104 mm (with DIN latch open)
Width: 110 mm, Depth: 87 mm
Height: 90 mm
104 mm (with DIN latch open)
Width: 160 mm, Depth: 87 mm
Shipping Weight
0.9 kg (2.0 lbs)
1.1 kg (2.4 lbs)
Number of I/O
14 inputs and 10 outputs
24 inputs, 16 outputs
Power Supply
100 to 240V ac
( -15%, +10%)
at 47 to 63 Hz
Heat Dissipation
See Appendix F
Power Supply Inrush
120V ac: 25A for 8 ms
L40BXB
L40BXBR
24V dc
( -15%, +10%)
Class 2
SELV
100 to 240V ac
( -15%, +10%)
at 47 to 63 Hz
24V dc
( -15%, +10%)
Class 2
SELV
120V ac: 25A for 8 ms
240V ac: 40A for 4 ms
24V dc:
15A for
20 ms
240V ac: 40A for 4 ms
24V dc:
15A for
30 ms
Power Supply Usage
68 VA
70 VA
27W
80 VA
82 VA
40W
Power
Supply
Output
5V dc
400 mA
400 mA(1)
400 mA
600 mA
600 mA(2)
600 mA
24V dc
350 mA
350 mA(1)
350 mA
500 mA
500 mA(2)
500 mA
Sensor Power Output
none
250 mA at 24V dc none
AC Ripple < 500 mV
peak-to-peak
400 μF max.(1)
none
400 mA at 24V dc none
AC Ripple < 500 mV
peak-to-peak
400 μF max.(2)
Input Circuit Type
120V ac
24V dc
sink/source
24V dc
sink/source
120V ac
24V dc
sink/source
24V dc
sink/source
Output Circuit Type
Relay
Relay
Relay/FET
Relay
Relay
Relay/FET
Operating Temp.
+0°C to +55°C (+32°F to +131°F) ambient
Storage Temp.
-40°C to +85°C (-40°F to +185°F) ambient
Operating Humidity
5% to 95% relative humidity (non-condensing)
Vibration
Operating: 10 to 500 Hz, 5G, 0.030 in. max. peak-to-peak, 2 hours each axis
Relay Operation: 1.5G
Shock
Operating: 30G; 3 pulses each direction, each axis
Relay Operation: 7G
Non-Operating: 50G panel mounted (40G DIN Rail mounted); 3 pulses each direction, each axis
1
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A-2
Specifications
Table A.1 General Specifications
Description
1762L24AWA
L24AWAR
L24BWA
L24BWAR
L24BXB
L24BXBR
L40AWA
L40AWAR
L40BWA
L40BWAR
L40BXB
L40BXBR
• UL 508
Agency Certification
• C-UL under CSA C22.2 no. 142
• Class I, Div. 2, Groups A, B, C, D
(UL 1604, C-UL under CSA C22.2 no. 213)
• CE/C-Tick compliant for all applicable directives/acts
Electrical/EMC
The controller has passed testing at the following levels:
• EN 61000-4-2: 4 kV contact, 8 kV air, 4 kV indirect
• EN 61000-4-3: 10V/m, 80 to 1000 MHz, 80% amplitude modulation, +900 MHz keyed carrier
• EN 61000-4-4: 2 kV, 5 kHz; communications cable: 1 kV, 5 kHz
• EN 61000-4-5: communications cable 1 kV galvanic gun
I/O: 2 kV CM (common mode), 1 kV DM (differential mode)
AC Power Supply: 4 kV CM (common mode), 2 kV DM (differential mode)
DC Power Supply: 500V CM (common mode), 500V DM (differential mode)
• EN 61000-4-6: 10V, communications cable 3V
Terminal Screw Torque 0.791 Nm (7 in-lb) rated
(1) Do not allow the total load power consumed by the 5V dc, 24V dc, and sensor power outputs to exceed 12W.
(2) Do not allow the total load power consumed by the 5V dc, 24V dc, and sensor power outputs to exceed 16W.
See Appendix F for system validation worksheets.
Table A.2 Input Specifications
Description
On-State Voltage Range
1762-L24AWA
1762-L40AWA
1762-L24AWAR
1762-L40AWAR
1762-L24BWA, -L24BXB, -L40BWA, -L40BXB
1762-L24BWAR, -L24BXBR, -L40BWAR, -L40BXBR
Inputs 0 through 3
Inputs 4 and higher
79 to 132V ac
14 to 24V dc
10 to 24V dc
(+10% at 55°C/131°F)
(+25% at 30°C/86°F)
(+10% at 55°C/131°F)
(+25% at 30°C/86°F)
Off-State Voltage Range
0 to 20V ac
0 to 5V dc
Operating Frequency
47 Hz to 63 Hz
0 Hz to 20 kHz
0 Hz to 1 kHz
(scan time dependent)
•minimum
•nominal
•maximum
•5.0 mA at 79V ac
•12 mA at 120V ac
•16.0 mA at 132V ac
•2.5 mA at 14V dc
•7.3 mA at 24V dc
•12.0 mA at 30V dc
•2.0 mA at 10V dc
•8.9 mA at 24V dc
•12.0 mA at 30V dc
Off-State Leakage Current
2.5 mA max.
1.5 mA min.
Nominal Impedance
12KΩ at 50 Hz
3.3KΩ
On-State Current:
10KΩ at 60 Hz
Inrush Current (max.) at 120V ac
Publication 1762-UM001D-EN-P - March 2004
250 mA
Not Applicable
2.7KΩ
Specifications
A-3
Table A.3 Output Specifications - General
Description
1762L24AWA
L24BWA
L24AWAR
L24BWAR
L24BXB
L24BXBR
L40AWA
L40BWA
L40AWAR
L40BWAR
L40BXB
L40BXBR
1440 VA
–
1440 VA
1440 VA
8A
7.5A
8A
8A
Relay and FET Outputs
Maximum Controlled Load
Maximum Continuous Current:
Current per Group Common
Current per Controller
at 150V max
30A or total of per-point loads, whichever is less
at 240V max
20A or total of per-point loads, whichever is less
Relay Outputs
Turn On Time/Turn Off Time
10 msec (minimum)(1)
Load Current
10 mA (minimum)
(1) scan time dependent
Table A.4 BXB FET Output Specifications
Description
General Operation
Power Supply Voltage
24V dc ( -15%, +10%)
High Speed Operation(1)
(Output 2 Only)
On-State Voltage Drop:
•at maximum load current
•at maximum surge current
•1V dc
•2.5V dc
•Not Applicable
•Not Applicable
•See graphs below.
•1.0 mA
•1.0 mA
•100 mA
•10 mA
•1.0 mA
Current Rating per Point
•maximum load
•minimum load
•maximum leakage
Maximum Output Current (temperature dependent):
2.0
FET Current per Point
(1762-L24BXB, L40BXB
1762-L24BXBR, L40BXBR)
9.0
8A, 30˚C (86˚F)
8.0
1.75
7.0
1.5A, 30˚C (86˚F)
1.5
6.0
1.25
1.0
1.0A, 55˚C (131˚F)
Valid
Range
0.75
0.5
0.25
Current (Amps)
Current (Amps)
FET Total Current
(1762-L40BXB and L40BXBR)
5.5A, 55˚C (131˚F)
5.0
4.0
Valid
Range
3.0
2.0
1.0
10˚C
(50˚F)
30˚C
(86˚F)
50˚C
(122˚F)
Temperature
70˚C
(158˚F)
10˚C
(50˚F)
30˚C
(86˚F)
50˚C
(122˚F)
70˚C
(158˚F)
Temperature
Publication 1762-UM001D-EN-P - March 2004
A-4
Specifications
Table A.4 BXB FET Output Specifications
Description
General Operation
High Speed Operation(1)
(Output 2 Only)
•
•
•
•
•
•
•
•
Surge Current per Point:
•
•
•
•
peak current
maximum surge duration
maximum rate of repetition at 30°C (86°F)
maximum rate of repetition at 55°C (131°F)
4.0A
10 msec
once every second
once every 2 seconds
Not Applicable
Not Applicable
Not Applicable
Not Applicable
Turn-On Time (maximum)
0.1 msec
6 μsec
Turn-Off Time (maximum)
1.0 msec
18 μsec
Repeatability (maximum)
n/a
2 μsec
Drift (maximum)
n/a
1 μsec per 5°C (9°F)
(1) Output 2 is designed to provide increased functionality over the other FET outputs. Output 2 may be used like the other FET transistor outputs, but in addition, within a
limited current range, it may be operated at a higher speed. Output 2 also provides a pulse train output (PTO) or pulse width modulation output (PWM) function.
Table A.5 AC Input Filter Settings
Nominal Filter Setting (ms)
ON Delay (ms)
8
OFF Delay (ms)
Minimum
Maximum
Minimum
Maximum
2
20
10
20
Table A.6 Fast DC Input Filter Settings (Inputs 0 to 3)
Nominal Filter Setting (ms) ON Delay (ms)
OFF Delay (ms)
Maximum Counter Frequency (Hz)
50% Duty Cycle
Minimum
Maximum
Minimum
Maximum
0.025
0.005
0.025
0.005
0.025
20.0 kHz
0.075
0.040
0.075
0.045
0.075
6.7 kHz
0.100
0.050
0.100
0.060
0.100
5.0 kHz
0.250
0.170
0.250
0.210
0.250
2.0 kHz
0.500
0.370
0.500
0.330
0.500
1.0 kHz
1.00
0.700
1.000
0.800
1.000
0.5 kHz
2.000
1.700
2.000
1.600
2.000
250 Hz
4.000
3.400
4.000
3.600
4.000
125 Hz
8.000(1)
6.700
8.000
7.300
8.000
63 Hz
16.000
14.000
16.000
14.000
16.000
31 Hz
(1) This is the default setting.
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-5
Table A.7 Normal DC Input Filter Settings (Inputs 4 and higher)
Nominal Filter Setting (ms) ON Delay (ms)
OFF Delay (ms)
Maximum Frequency (Hz)
50% Duty Cycle
Minimum
Maximum
Minimum
Maximum
0.500
0.090
0.500
0.020
0.500
1.0 kHz
1.000
0.500
1.000
0.400
1.000
0.5 kHz
2.000
1.100
2.000
1.300
2.000
250 Hz
2.800
4.000
2.700
4.000
125 Hz
5.800
8.000
5.300
8.000
63 Hz
11.000
16.000
10.000
16.000
31 Hz
4.000
8.000
(1)
16.000
(1) This is the default setting.
Table A.8 Relay Contact Ratings
Maximum Volts
Amperes
Make
Break
Amperes
Continuous
Volt-Amperes
Make
Break
240V ac
7.5A
0.75A
2.5A(1)
1800 VA
180 VA
120V ac
15A
1.5A
2.5A(1)
1800 VA
180 VA
125V dc
0.22A(2)
1.0A
28 VA
24V dc
1.2A(2)
2.0A
(1) 1.5A above 40°C.
(2) For dc voltage applications, the make/break ampere rating for relay contacts can be determined by dividing 28 VA by
the applied dc voltage. For example, 28 VA/48V dc = 0.58A. For dc voltage applications less than 14V, the make/break
ratings for relay contacts cannot exceed 2A.
Table A.9 Working Voltage (1762-L24AWA, 1762-L40AWA)
Description
1762-L24AWA, 1762-L40AWA, 1762-L24AWAR, 1762-L40AWAR
Power Supply Input to Backplane Isolation Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1
second
265V ac Working Voltage (IEC Class 2 reinforced insulation)
Input Group to Backplane Isolation
Verified by one of the following dielectric tests:1517V ac for 1 second or 2145V dc for 1 second
132V ac Working Voltage (IEC Class 2 reinforced insulation)
Input Group to Input Group Isolation
Verified by one of the following dielectric tests:1517V ac for 1 second or 2145V dc for 1 second
132V ac Working Voltage (basic insulation)
Output Group to Backplane Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1
second
265V ac Working Voltage (IEC Class 2 reinforced insulation)
Output Group to Output Group Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1second
265V ac Working Voltage (basic insulation) 150V ac Working Voltage (IEC Class 2 reinforced
insulation).
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A-6
Specifications
Table A.10 Working Voltage (1762-L24BWA, 1762-L40BWA, 1762-L24BWAR, 1762-L40BWAR)
Description
1762-L24BWA, 1762-L40BWA, 1762-L24BWAR, 1762-L40BWAR
Power Supply Input to Backplane Isolation Verified by one of the following dielectric tests:1836V ac for 1 second or 2596V dc for 1 second
265V ac Working Voltage (IEC Class 2 reinforced insulation)
Input Group to Backplane Isolation and
Input Group to Input Group Isolation
Verified by one of the following dielectric tests: 1200V ac for 1 second or 1697V dc for 1 second
Output Group to Backplane Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1 second
Output Group to Output Group Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1 second
75V dc Working Voltage (IEC Class 2 reinforced insulation)
265V ac Working Voltage (IEC Class 2 reinforced insulation).
265V ac Working Voltage (basic insulation) 150V Working Voltage (IEC Class 2 reinforced
insulation)
Table A.11 Working Voltage (1762-L24BXB, 1762-L40BXB, 1762-L24BXBR, 1762-L40BXBR)
Description
1762-L24BXB, 1762-L40BXB, 1762-L24BXBR, 1762-L40BXBR
Input Group to Backplane Isolation and Verified by one of the following dielectric tests: 1200V ac for 1 second or 1697V dc for 1 second
Input Group to Input Group Isolation
75V dc Working Voltage (IEC Class 2 reinforced insulation)
FET Output Group to Backplane
Isolation
Verified by one of the following dielectric tests: 1200V ac for 1 second or 1697V dc for 1 second
Relay Output Group to Backplane
Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1 second
Relay Output Group to Relay Output
Group and FET Output Group Isolation
Verified by one of the following dielectric tests: 1836V ac for 1 second or 2596V dc for 1 second
75V dc Working Voltage (IEC Class 2 reinforced insulation)
265V ac Working Voltage (IEC Class 2 reinforced insulation).
265V ac Working Voltage (basic insulation) 150V Working Voltage (IEC Class 2 reinforced
insulation)
Expansion I/O
Specifications
Discrete I/O Modules
Table A.12 General Specifications
Specification
Value
Dimensions
90 mm (height) x 87 mm (depth) x 40.4 mm (width)
height including mounting tabs is 110 mm
3.54 in. (height) x 3.43 in. (depth) x 1.59 in. (width)
height including mounting tabs is 4.33 in.
Storage Temperature
-40°C to +85°C (-40°F to +185°F)
Operating Temperature
0°C to +55°C (+32°F to +131°F)
Operating Humidity
5% to 95% non-condensing
Operating Altitude
2000 meters (6561 feet)
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-7
Table A.12 General Specifications
Specification
Value
Vibration
Operating: 10 to 500 Hz, 5G, 0.030 in. max. peak-to-peak,
2 hours per axis
Relay Operation: 1.5G
Shock
Operating: 30G panel mounted, 3 pulses per axis
Relay Operation: 7G
Non-Operating: 50G panel mounted, 3 pulses per axis
(40G DIN Rail mounted)
Agency Certification
C-UL certified (under CSA C22.2 No. 142)
UL 508 listed
CE compliant for all applicable directives
Hazardous Environment Class
Class I, Division 2, Hazardous Location, Groups A, B, C, D (UL 1604, C-UL under CSA C22.2 No. 213)
Radiated and Conducted Emissions EN50081-2 Class A
Electrical /EMC:
The module has passed testing at the following levels:
ESD Immunity (IEC1000-4-2)
4 kV contact, 8 kV air, 4 kV indirect
Radiated Immunity (IEC1000-4-3)
10 V/m, 80 to 1000 MHz, 80% amplitude modulation, +900 MHz keyed carrier
Fast Transient Burst (IEC1000-4-4)
2 kV, 5 kHz
Surge Immunity (IEC1000-4-5)
2 kV common mode, 1 kV differential mode
Conducted Immunity (IEC1000-4-6)
10V, 0.15 to 80 MHz(1)
(1) Conducted Immunity frequency range may be 150 kHz to 30 MHz if the Radiated Immunity frequency range is 30 MHz to 1000 MHz.
Table A.13 Input Specifications
Specification
1762-IA8
1762-IQ8
1762-IQ16
Approximate Shipping
Weight
(With Carton)
209g (0.46 lbs.)
200g (0.44 lbs.)
230 g (0.51 lbs.)
Voltage Category
100/120V ac
24V dc (sink/source)(1)
24V dc (sink/source)<secondary
footnote>(1)
Operating Voltage Range
79V ac to 132V ac at 47 Hz to 63 Hz 10 to 30V dc at 30°C (86°F)
10 to 26.4V dc at 55°C (131°F)
10 to 30V dc at 30°C (86°F)
10 to 26.4V dc at 55°C (131°F)
Number of Inputs
8
8
16
Bus Current Draw (max.)
50 mA at 5V dc (0.25W)
50 mA at 5V dc (0.25W)
60 mA at 5V dc (0.3W)
Heat Dissipation (max.)
2.0 Watts
3.7 Watts
4.2 Watts at 26.4V
5.3 Watts at 30V
Signal Delay (max.)
On Delay: 20.0 ms
On Delay: 8.0 ms
On Delay: 8.0 ms
Off Delay: 20.0 ms
Off Delay: 8.0 ms
Off Delay: 8.0 ms
Publication 1762-UM001D-EN-P - March 2004
A-8
Specifications
Table A.13 Input Specifications
Specification
1762-IA8
1762-IQ8
1762-IQ16
Off-State Voltage (max.)
20V ac
5V dc
5V dc
Off-State Current (max.)
2.5 mA
1.5 mA
1.5 mA
On-State Voltage (min.)
79V ac (min.) 132V ac (max.)
10V dc
10V dc
On-State Current
5.0 mA (min.) at 79V ac 47 Hz
2.0 mA min. at 10V dc
12.0 mA (nominal) at 120V ac 60 Hz 8.0 mA nominal at 24V dc
16.0 mA (max.) at 132V ac 63 Hz
12.0 mA max. at 30V dc
2.0 mA min. at 10V dc
8.0 mA nominal at 24V dc
12.0 mA max. at 30V dc
Inrush Current (max.)
250 mA
Not Applicable
Not Applicable
Nominal Impedance
12K Ω at 50 Hz
10K Ω at 60 Hz
3K Ω
3K Ω
Power Supply Distance
Rating
6 (The module may not be located more than 6 modules away from the power supply.)
IEC Input Compatibility
Type 1+
Type 1+
Type 1+
Isolated Groups
Group 1: inputs 0 to 7 (internally
connected commons)
Group 1: inputs 0 to 7 (internally
connected commons)
Group 1: inputs 0 to 7; Group 2:
inputs 8 to 15
Input Group to Backplane
Isolation
Verified by one of the following
dielectric tests: 1517V ac for 1 sec.
or 2145V dc for 1 sec.
Verified by one of the following dielectric tests: 1200V ac for 1 sec.
or 1697V dc for 1 sec.
75V dc working voltage (IEC Class 2 reinforced insulation)
132V ac working voltage (IEC Class
2 reinforced insulation)
Vendor I.D. Code
1
Product Type Code
7
Product Code
114
96
97
(1) Sinking/Sourcing Inputs - Sourcing/sinking describes the current flow between the I/O module and the field device. Sourcing I/O circuits supply (source) current to sinking
field devices. Sinking I/O circuits are driven by a current sourcing field device. Field devices connected to the negative side (DC Common) of the field power supply are
sinking field devices. Field devices connected to the positive side (+V) of the field supply are sourcing field devices.
Table A.14 Output Specifications
Spec.
1762-OA8
1762-OB8
1762-OB16
1762-OW8
1762-OW16
1762-OX6I
Approximate 215g (0.48 lbs.)
Shipping
Weight
(With Carton)
210g (0.46 lbs.)
235g (0.52 lbs.)
228g (0.50 lbs.)
285g (0.63 lbs.)
220g (0.485 lbs)
Voltage
Category
100 to 240V ac
24V dc
24V dc
AC/DC normally AC/DC normally AC/DC Type C
open relay
open relay
Relay
Operating
Voltage
Range
85V ac to 265V ac at
47 to 63 Hz
20.4V dc to 26.4V dc 20.4V dc to 26.4V dc 5 to 265V ac
5 to 125V dc
5 to 265V ac
5 to 125V dc
5 to 265V ac
5 to 125V dc
Number of
Outputs
8
8
16
6
Publication 1762-UM001D-EN-P - March 2004
16
8
Specifications
A-9
Table A.14 Output Specifications
Spec.
1762-OA8
1762-OB8
1762-OB16
1762-OW8
1762-OW16
Bus Current
Draw (max.)
115 mA at 5V dc
(0.575W)
115 mA at 5V dc
(0.575W)
175 mA at 5V dc
(0.88W)
80 mA at 5V dc
(0.40W)
120 mA at 5V dc 110 mA at 5V dc
(0.55W)
(0.60W)
Heat
Dissipation
(max.)
2.9 Watts
1762-OX6I
90 mA at 24V dc 140 mA at 24V
dc (3.36W)
(2.16W)
110 mA at 24V
dc (2.64W)
2.8 Watts
1.61 Watts
2.9 Watts at 30°C
(86°F)
2.1 Watts at 55°C
(131°F)
2.9 Watts
Signal Delay On Delay: 1/2 cycle
(max.) –
resistive load Off Delay: 1/2 cycle
On Delay: 0.1 ms
On Delay: 0.1 ms
Off Delay: 1.0ms
Off Delay: 1.0 ms
On Delay: 10 ms On Delay: 10 ms On Delay: 10 ms
(max) 6 ms
Off Delay: 10
Off Delay: 10
(typical)
ms
ms
Off Delay: 20 ms
(max)
12 ms (typical)
Off-State
Leakage
(max.)
1.0 mA
1.0 mA
0 mA
0 mA
0 mA
On-State
10 mA
Current (min.)
1.0 mA
1.0 mA
10 mA
10 mA
100 mA
On-State
Voltage Drop
(maximum)
1.5V at 0.5 A
1.0V dc
1.0V dc
Not Applicable
Not Applicable
Not Applicable
Continuous
Current per
Point (max.)
0.25A at 55°C
(131°F)
0.5A at 30°C (86°F)
0.5A at 55°C (131°F) 0.5A at 55°C (131°F) 2.5A (Also see “Relay Contact
1.0A at 30°C (86°F) 1.0A at 30°C (86°F) Ratings” on page A-5.)
Continuous
Current per
Common
(max.)
1.0 A at 55°C (131°F) 4.0A at 55°C (131°F) 4.0A at 55°C (131°F) 8 A
2.0 A at 30°C (86°F) 8.0A at 30°C (86°F) 8.0A at 30°C (86°F)
Continuous
Current per
Module
(max.)
2.0 A at 55°C (131°F)
4.0 A at 30°C (86°F)
2 mA at 132V,
2.5 mA at 265V
Surge Current 5.0 A (Repeatability
(maximum)
is once every 2
seconds for a
duration of 25 msec.
4.0 A at 55°C;
8.0 A at 30°C
4.0A at 55°C (131°F) 16 A
5.6 Watts
8A
7A (Also see
“Relay Contact
Ratings” on
page A-5.)
16A
30A (Also see
Module Load
Ratings
1762-OX6I on
page A-11
8.0A at 30°C (86°F)
2.0A (Repeatability
is once every 2
seconds at 55°C
(131°F), once every
second at 30°C
(86°F) for a duration
of 10 msec.)
2.0A (Repeatability
is once every 2
seconds at 55°C
(131°F), once every
second at 30°C
(86°F) for a duration
of 10 msec.)
7A (Also see
“Relay Contact
Ratings” on
page A-5.)
See “Relay Contact Ratings” on
page A-5
See “Relay
Contact
Ratings” on
page A-5
Power Supply 6 (The module may not be more than 6 modules away from the power supply.)
Distance
Rating
Publication 1762-UM001D-EN-P - March 2004
A-10
Specifications
Table A.14 Output Specifications
Spec.
1762-OA8
1762-OB8
1762-OB16
1762-OW8
1762-OW16
1762-OX6I
Isolated
Groups
Group 1: Outputs 0 to
3
Group 1: Outputs 0
to 7
Group 1: Outputs 0
to 15
Group 1:
Outputs 0 to 3
Group 1:
Outputs 0 to 7
All 6 Outputs
Individually
Isolated.
Group 2:
Outputs 4 to 7
Group 2:
Outputs 8 to 15
Group 2: Outputs 4 to
7
Output Group Verified by one of the
to Backplane following dielectric
Isolation
tests: 1836V ac for 1
sec. or 2596V dc for 1
sec.
Verified by one of the following dielectric
tests: 1200V ac for 1 sec. or 1697V dc for 1
sec.
75V dc working voltage (IEC Class 2
reinforced insulation)
Verified by one of the following dielectric tests:
1836V ac for 1 sec. or 2596V dc for 1 sec.
265V ac working voltage (IEC Class 2 reinforced
insulation)
265V ac working
voltage (IEC Class 2
reinforced insulation)
Output Group
to Output
Group
Isolation
Verified by one of the Not Applicable
following dielectric
tests: 1836V ac for 1
sec. or 2596V dc for 1
sec.
Verified by one of the following dielectric tests:
1836V ac for 1 sec. or 2596V dc for 1 sec.
265V ac working voltage (basic insulation)
150V ac working voltage (IEC Class 2 reinforced
insulation)
265V ac working
voltage (IEC Class 2
reinforced insulation)
Vendor I.D.
Code
1
1
1
1
1
1
Product Type
Code
7
7
7
7
7
7
Product Code
119
101
103
120
121
124
Table A.15 Relay Contact Ratings (1762-OW8 and 1762-OW16)
Maximum Volts
Amperes
Amperes Continuous
Make
Break
240V ac
7.5A
0.75A
120V ac
15A
1.5A
125V dc
0.22A(1)
1.0A
24V dc
1.2A(2)
2.0A
Volt-Amperes
Make
Break
2.5A(2)
1800 VA
180 VA
2.5A(1)
1800 VA
180 VA
28 VA
(1) For dc voltage applications, the make/break ampere rating for relay contacts can be determined by dividing 28 VA by the applied dc voltage. For example, 28 VA/48V dc =
0.58A. For dc voltage applications less than 14V, the make/break ratings for relay contacts cannot exceed 2A.
(2) 1.5A above 40°C.
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-11
Table A.16 Relay Contact Ratings 1762-OX6I
Volts
(max.)
Continuous Amperes(3)
Amps per
Make
Break
Point
(1)
(max.)
Make
Break
240V ac
5.0 A
15 A
1.5 A
3600 VA
360 VA
120V ac
7.0 A(2)
30 A
3.0 A
125V dc
2.5 A
0.4 A
50 VA(4)
24V dc
7.0 A(2)
7.0 A
168 VA(4)
Voltamperes
(1) The continuous current per module must be limited so the module power does not exceed 1440VA.
(2) 6 A in ambient temperatures above 40°C.
(3) Surge Suppression – Connecting surge suppressors across your external inductive load will extend the
life of the relay contacts. For additional details, refer to Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1.
(4) DC Make/Break Voltamperes must be limited to 50 VA for DC voltages between 28V dc and 125V dc. DC
Make/Break Voltamperes below 28V dc are limited by the 7 A Make/Break current limit.
Table A.17 Module Load Ratings 1762-OX6I
Volts (max.)
Controlled Load (Current) per Module
(max.)
240V ac
6A
120V ac
12 A(1)
125V dc
11.5 A
24V dc
30 A(2)
(1) Current per relay limited to 6 A at ambient temperatures above 40°C.
(2) 24 A in ambient temperatures above 40°C. Limited by ambient temperature
and the number of relays controlling loads. See below.
Publication 1762-UM001D-EN-P - March 2004
A-12
Specifications
8
Ambient Temperature
below 40°C
7
6
Ambient Temperature
above 40°C
5
4
3
1
2
3
4
5
6
Maximum Current per Relay (Amps)
Relays Used vs. Maximum Current per Relay (24V dc) 1762-OX6I
Number of Relays Controlling Loads
Analog Modules
Table A.18 Common Specifications
Specification
1762-IF2OF2, 1762-IF4, 1762-IR4, 1762-IT4 and 1762-OF4
Dimensions
90 mm (height) x 87 mm (depth) x 40 mm (width)
height including mounting tabs is 110 mm
3.54 in. (height) x 3.43 in. (depth) x 1.58 in. (width)
height including mounting tabs is 4.33 in.
Storage Temperature
-40°C to +85°C (-40°F to +185°F)
Operating Temperature
0°C to +55°C (-32°F to +131°F)
Operating Humidity
5% to 95% non-condensing
Operating Altitude
2000 meters (6561 feet)
Vibration
Operating: 10 to 500 Hz, 5G, 0.030 in. max. peak-to-peak
Shock
Operating: 30G
Module Power LED
On: indicates power is applied.
Recommended Cable
Belden™ 8761 (shielded)
(For 1762-IT4, Shielded thermocouple extension wire for the specific type of thermocouple you are
using. Follow thermocouple manufacturer’s recommendations.)
Agency Certification
C-UL certified (under CSA C22.2 No. 142)
UL 508 listed
CE compliant for all applicable directives
C-Tick markred for all applicable acts (1762-IR4 and 1762-IT4)
Hazardous Environment Class
Class I, Division 2, Hazardous Location, Groups A, B, C, D (UL 1604, C-UL under CSA C22.2 No. 213)
Noise Immunity
NEMA standard ICS 2-230
Radiated and Conducted Emissions EN50081-2 Class A
Electrical /EMC:
The module has passed testing at the following levels:
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-13
Table A.18 Common Specifications
Specification
1762-IF2OF2, 1762-IF4, 1762-IR4, 1762-IT4 and 1762-OF4
ESD Immunity (IEC1000-4-2)
4 kV contact, 8 kV air, 4 kV indirect
Radiated Immunity (IEC1000-4-3)
10 V/m, 80 to 1000 MHz, 80% amplitude modulation, +900 MHz keyed carrier
Fast Transient Burst (IEC1000-4-4)
2 kV, 5 kHz
Surge Immunity (IEC1000-4-5)
1 kV galvanic gun
Conducted Immunity (IEC1000-4-6)
10V, 0.15 to 80 MHz(1) (2)
(1) Conducted Immunity frequency range may be 150 kHz to 30 MHz if the Radiated Immunity frequency range is 30 MHz to 1000 MHz.
(2) For grounded thermocouples, the 10V level is reduced to 3V.
Table A.19 General Specifications
Specification
1762-IF2OF2
Approximate
Shipping Weight
(with carton)
240g (0.53 lbs.)
Bus Current Draw
(max.)
40 mA at 5V dc
105 mA at 24V dc
Analog Normal
Operating Range
1762-IF4
1762-OF4
1762-IR4
1762-IT4
235g (0.517 lbs.)
260g (0.57 lbs.)
220g (0.53 lbs.)
40 mA at 5V dc
50 mA at 24V dc
40 mA at 5V dc
165 mA at 24V dc
40 mA at 5V dc
50 mA at 24V dc
40 mA at 5V dc
50 mA at 24V dc
Voltage: 0 to 10V dc
Current: 4 to 20 mA
Voltage: -10 to +10V
dc
Current: 4 to 20 mA
Voltage 0 to 10V dc
Current: 4 to 20 mA
NA
NA
Full Scale(1) Analog
Ranges
Voltage: 0 to 10.5V
dc
Current: 0 to 21 mA
Voltage: -10.5 to
+10.5V dc
Current: -21 to +21
mA
Voltage:0 to 10.5V
dc
Current: 0 to 21 mA
NA
NA
Resolution
12 bits (unipolar)
15 bits
12 bits (unipolar)
Input filter and
configuration
dependent
15 bits plus sign
Repeatability(2)
±0.1%
±0.1%
±0.1%
±0.1°C (±0.18°F) for
Ni and NiFe
±0.2°C (±0.36°F) to
±0.2°C (±0.36°F) for
other RTD inputs
±0.04 ohm for 150
ohm resistances
±0.2 ohm for other
resistances
See Table A.23 on
page A-17
Input and Output
Group to System
Isolation
30V ac/30V dc rated working voltage(3)
(N.E.C. Class 2 required)
(IEC Class 2 reinforced insulation)
type test: 500V ac or 707V dc for 1 minute
30V ac/30V dc rated
working voltage
(IEC Class 2
reinforced
insulation)
type test: 500V ac or
707V dc for 1 minute
30V ac/30V dc
working voltage
type test: 500V ac or
707V dc for 1 minute
30V ac/30V dc
working voltage
qualification test:
720V dc for 1 minute
Publication 1762-UM001D-EN-P - March 2004
A-14
Specifications
Table A.19 General Specifications
Specification
1762-IF2OF2
1762-IF4
1762-OF4
1762-IR4
1762-IT4
Vendor I.D. Code
1
1
1
1
1
Product Type Code
10
10
10
10
10
Product Code
75
67
66
65
64
(1) The over- or under-range flag comes on when the normal operating range (over/under) is exceeded. The module continues to convert the analog input up to the maximum
full scale range.
(2) Repeatability is the ability of the module to register the same reading in successive measurements for the same signal.
(3) Rated working voltage is the maximum continuous voltage that can be applied at the terminals with respect to earth ground.
Table A.20 Input Specifications
Specification
1762-IF2OF2
1762-IF4
1762-IR4
1762-IT4
Number of Inputs
2 differential (unipolar)
4 differential (bipolar)
4
4 input channels plus 1
CJC sensor
Update Time (typical)
2.5 ms
130, 250, 290, 450, 530
ms (selectable)
Input filter and
cofiguration dependent
NA
A/D Converter Type
Successive
approximation
Successive
approximation
Delta-Sigma
Delta-Sigma
Common Mode Voltage
Range(1)
±27V
±27V
NA
±10V
Common Mode
Rejection(2)
> 55 dB at 50 and 60 Hz
> 55 dB at 50 and 60 Hz
>110 dB at 50 Hz (with 10
or 50 Hz filter)
>110 dB at 60 Hz (with 10
or 60 Hz filter)
>110 dB at 50 Hz (with 10
or 50 Hz filter)
>110 dB at 60 Hz (with 10
or 60 Hz filter)
Non-linearity (in percent
full scale)
±0.1%
±0.1%
±0.05%
NA
Typical Overall
Accuracy(3)
±0.5% full scale at 0 to
55°C
±0.3% full scale at 25°C
±0.3% full scale at 0 to
±0.5°C (F°) for Pt 385
55°C
±0.24% full scale at 25°C
Input Impedance
Voltage Terminal: 200KΩ Voltage Terminal: 200KΩ >10 ΜΩ
Current Terminal: 250Ω
Current Terminal: 275Ω
>10 ΜΩ
Current Input Protection
±32 mA
±32 mA
NA
NA
Voltage Input Protection
±30V
±30V
NA
NA
Channel Diagnostics
Over or under range or
open circuit condition by
bit reporting for analog
inputs.
Over or under range or
open circuit condition by
bit reporting for analog
inputs.
Over or under range or
open circuit condition by
bit reporting for analog
inputs.
Over or under range or
open circuit condition by
bit reporting for analog
inputs.
(1) For proper operation, both the plus and minus input terminals must be within ±27V (±10V for 1762-IT4) of analog common.
(2) Vcm = 1 Vpk-pk AC
(3) Vcm = 0 (includes offset, gain, non-linearity and repeatability error terms)
Publication 1762-UM001D-EN-P - March 2004
NA
Specifications
A-15
Table A.21 Input Specifications 1762-IR4
Specification
Input Types
1762-IR4
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
100Ω Platinum 385
200Ω Platinum 385
500Ω Platinum 385
1000Ω Platinum 385
100Ω Platinum 3916
200Ω Platinum 3916
500Ω Platinum 3916
1000Ω Platinum 3916
10Ω Copper 426
120Ω Nickel 672
120Ω Nickel 618
604Ω Nickel-Iron 518
0 to 150Ω
0 to 500Ω
0 to 1000Ω
0 to 3000Ω
Heat Dissipation
1.5 Total Watts (The Watts per point, plus the minimum Watts, with all points enabled.)
Normal Mode Rejection Ratio
70 dB minimum at 50 Hz with the 10 or 50 Hz filter selected
70 dB minimum at 60 Hz with the 10 or 60 Hz filter selected
Typical Accuracy [Autocalibration
Enabled] at 25° C (77°F) Ambient with
Module Operating Temperature at 25° C
(77°F) (1)
±0.5°C (°F) for Pt 385
±0.4°C (°F) for Pt 3916
±0.2°C (°F) for Ni
±0.3°C (°F) for NiFe
±0.6°C (°F) for Cu
±0.15Ω for 150Ω range
±0.5Ω for 500Ω range
±1.0Ω for 1000Ω range
±1.5Ω for 3000Ω range
Typical Accuracy [Autocalibration
Enabled] at 0 to 55° C (+32 to +131°F)(1)
±0.9°C (°F) for Pt 385
±0.8°C (°F) for Pt 3916
±0.4°C (°F) for Ni
±0.5°C (°F) for NiFe
±1.1°C (°F) for Cu
±0.25Ω for 150Ω range
±0.8Ω for 500Ω range
±1.5Ω for 1000Ω range
±2.5Ω for 3000Ω range
Accuracy Drift at 0 to 55° C (+32 to
+131°F)
±0.026°C/°C (0.026°F/°F) for Pt 385
±0.023°C/°C (0.023°F/°F) for Pt 3916
±0.012°C/°C (0.012°F/°F) for Ni
±0.015°C/°C (0.015°F/°F) for NiFe
±0.032°C/°C (0.032°F/°F) for Cu
±0.007Ω/°C (0.012Ω/°F) for 150Ω range
±0.023Ω/°C (0.041Ω/°F) for 500Ω range
±0.043Ω/°C (0.077Ω/°F) for 1000Ω range
±0.072Ω/°C (0.130Ω/°F) for 3000Ω range
Excitation Current Source
0.5 mA and 1.0 mA selectable per channel
Open-Circuit Detection Time(2)
6 to 1212 ms
Input Channel Configuration
Via configuration software screen or the user program (by writing a unique bit pattern into the
module’s configuration file). Refer to your controller’s user manual to determine if user
program configuration is supported.
Calibration
The module performs autocalibration on channel enable and on a configuration change
between channels. You can also program the module to calibrate every five minutes.
Maximum Overload at Input Terminals
±35V dc continuous
Cable Impedance Max.
25Ω (Operating with >25Ω will reduce accuracy.)
Power Supply Distance Rating
6 (The module may not be more than 6 modules away from the system power supply.)
Channel to Channel Isolation
±10V dc
(1) Accuracy is dependent upon the Analog/Digital converter filter rate selection, excitation current selection, data format, and input noise.
Publication 1762-UM001D-EN-P - March 2004
A-16
Specifications
(2) Open-circuit detection time is equal to channel update time.
Table A.22 Input Specifications 1762-IT4
Specification
Value
Heat Dissipation
1.5 Total Watts (The Watts per point, plus the
minimum Watts, with all points energized.)
Response Speed per Channel
Input filter and configuration dependent.
Rated Working Voltage(1)
30V ac/30V dc
Normal Mode Rejection Ratio
85 dB (minimum) at 50 Hz (with 10 Hz or 50 Hz filter)
85 dB (minimum) at 60 Hz (with 10 Hz or 60 Hz filter)
Maximum Cable Impedance
25 Ω (for specified accuracy)
Open-circuit Detection Time
7 ms to 1.515 seconds(2)
Calibration
The module performs autocalibration upon power-up
and whenever a channel is enabled. You can also
program the module to calibrate every five minutes.
CJC Accuracy
±1.3°C (±2.34°F)
Maximum Overload at Input
Terminals
±35V dc continuous(3)
Input Channel Configuration
via configuration software screen or the user program
(by writing a unique bit pattern into the module’s
configuration file).
(1) Rated working voltage is the maximum continuous voltage that can be applied at the input terminal, including
the input signal and the value that floats above ground potential (for example, 30V dc input signal and 20V dc
potential above ground).
(2) Open-circuit detection time is equal to the module scan time, which is based on the number of enabled
channels, the filter frequency of each channel, and whether cyclic calibration is enabled..
(3) Maximum current input is limited due to input impedance.
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-17
Table A.23 1762-IT4 Repeatability at 25°C (77°F)(1) (2)
Input Type
Repeatability for
10 Hz Filter
Thermocouple J
±0.1°C [±0.18°F]
Thermocouple N (-110°C to +1300°C [-166°F to +2372°F])
±0.1°C [±0.18°F]
Thermocouple N (-210°C to -110°C [-346°F to -166°F])
±0.25°C [±0.45°F]
Thermocouple T (-170°C to +400°C [-274°F to +752°F])
±0 .1°C [±0.18°F]
Thermocouple T (-270°C to -170°C [-454°F to -274°F])
±1.5°C [±2.7°F]
Thermocouple K (-270°C to +1370°C [-454°F to +2498°F])
±0.1°C [±0.18°F]
Thermocouple K (-270°C to -170°C [-454°F to -274°F])
±2.0°C [±3.6°F]
Thermocouple E (-220°C to +1000°C [-364°F to +1832°F])
±0.1°C [±0.18°F]
Thermocouple E (-270°C to -220°C [-454°F to -364°F])
±1.0°C [±1.8°F]
Thermocouples S and R
±0.4°C [±0.72°F]
Thermocouple C
±0.2°C [±0.36°F]
Thermocouple B
±0.7°C [±1.26°F]
±50 mV
±6 μV
±100 mV
±6 μV
(1) Repeatability is the ability of the input module to register the same reading in successive measurements for the
same input signal.
(2) Repeatability at any other temperature in the 0 to 60°C (32 to 140°F) range is the same as long as the
temperature is stable.
Table A.24 1762-IT4 Accuracy
With Autocalibration Enabled
Without Autocalibration
Accuracy(2) (3) for 10 Hz, 50 Hz and 60
Hz Filters (max.)
(4)
at 25°C [77°F]
Ambient
at 0 to 60°C
[32 to 140°F]
Ambient
at 0 to 60°C [32 to 140°F]
Ambient
±0.6°C [± 1.1°F]
±0.9°C [± 1.7°F]
±0.0218°C/°C [±0.0218°F/°F]
Thermocouple N (-200°C to +1300°C [-328°F to 2372°F]) ±1°C [± 1.8°F]
±1.5°C [±2.7°F]
±0.0367°C/°C [±0.0367°F/°F]
Thermocouple N (-210°C to -200°C [-346°F to -328°F])
±1.2°C [±2.2°F]
±1.8°C [±3.3°F]
±0.0424°C/°C [±0.0424°F/°F]
Thermocouple T (-230°C to +400°C [-382°F to +752°F])
±1°C [± 1.8°F]
±1.5°C [±2.7°F]
±0.0349°C/°C [±0.0349°F/°F]
Thermocouple T (-270°C to -230°C [-454°F to -382°F])
±5.4°C [± 9.8°F]
±7.0°C [±12.6°F]
±0.3500°C/°C [±0.3500°F/°F]
Thermocouple K (-230°C to +1370°C [-382°F to
+2498°F])
±1°C [± 1.8°F]
±1.5°C [±2.7°F]
±0.4995°C/°C [±0.4995°F/°F]
Thermocouple K (-270°C to -225°C [-454°F to -373°F])
±7.5°C [± 13.5°F]
±10°C [± 18°F]
±0.0378°C/°C [±0.0378°F/°F]
Input Type(1)
Thermocouple J (-210°C to 1200°C [-346°F to 2192°F])
Maximum Temperature Drift(2)
Publication 1762-UM001D-EN-P - March 2004
A-18
Specifications
Table A.24 1762-IT4 Accuracy
With Autocalibration Enabled
Without Autocalibration
Accuracy(2) (3) for 10 Hz, 50 Hz and 60
Hz Filters (max.)
(4)
at 25°C [77°F]
Ambient
at 0 to 60°C
[32 to 140°F]
Ambient
at 0 to 60°C [32 to 140°F]
Ambient
Thermocouple E (-210°C to +1000°C [-346°F to
+1832°F])
±0.5°C [± 0.9°F]
±0.8°C [±1.5°F]
±0.0199°C/°C [±0.0199°F/°F]
Thermocouple E (-270°C to -210°C [-454°F to -346°F])
±4.2°C [± 7.6°F]
±6.3°C [±11.4°F]
±0.2698°C/°C [±0.2698°F/°F]
Thermocouple R
±1.7°C [± 3.1°F]
±2.6°C [± 4.7°F]
±0.0613°C/°C [±0.0613°F/°F]
Thermocouple S
±1.7°C [± 3.1°F]
±2.6°C [± 4.7°F]
±0.0600°C/°C [±0.0600°F/°F]
Thermocouple C
±1.8°C [±3.3°F]
±3.5°C [±6.3°F]
±0.0899°C/°C [±0.0899°F/°F]
Thermocouple B
±3.0°C [±5.4°F]
±4.5°C [±8.1°F]
±0.1009°C/°C [±0.1009°F/°F]
±50 mV
±15 μV
±25 μV
±0.44μV/°C [±0.80μV/°F]
±100 mV
±20 μV
±30 μV
±0.69μV/°C [±01.25μV/°F]
Input Type(1)
(1)
(2)
(3)
(4)
Maximum Temperature Drift(2)
The module uses the National Institute of Standards and Technology (NIST) ITS-90 standard for thermocouple linearization.
Accuracy and temperature drift information does not include the affects of errors or drift in the cold junction compensation circuit.
Accuracy is dependent upon the analog/digital converter output rate selection, data format, and input noise.
Temperature drift with autocalibration is slightly better than without autocalibration.
TIP
For more detailed 1762-IT4 accuracy information, see
publication 1762-UM002.
Table A.25 Output Specifications
Specification
1762-IF2OF2
1762-OF4
Number of Outputs
2 single-ended (unipolar)
4 single-ended (bipolar)
Update Time (typical)
4.5 ms
D/A Converter Type
Resistor string
R-2R Ladder Voltage Switching
Resistive Load on Current Output
0 to 500 Ω (includes wire resistance)
0 to 500 Ω (includes wire resistance)
Load Range on Voltage Output
> 1KΩ
> 1KΩ
Reactive Load, Current Output
< 0.1 mH
< 0.1 mH
Reactive Load, Voltage Output
< 1 μF
< 1 μF
Typical Overall Accuracy(1)
±1% full scale at 0 to 55°C
±0.5% full scale at 25°C
±1% full scale at 0 to 55°C
±0.5% full scale at 25°C
Output Ripple
range 0 to 500 Hz
(referred to output range)
< ±0.1%
< ±0.1%
Publication 1762-UM001D-EN-P - March 2004
Specifications
A-19
Table A.25 Output Specifications
Specification
1762-IF2OF2
1762-OF4
Non-linearity (in percent full scale)
< ±0.5%
< ±0.5%
Open and Short-Circuit Protection
Continuous
Continuous
Output Protection
±32 mA
±32 mA
(1) Includes offset, gain, non-linearity and repeatability error terms.
Table A.26 Valid Input/Output Data Word Formats/Ranges for 1762-IF2OF2
Normal Operating Range
Full Scale Range
RAW/Proportional Data
Scaled-for-PID
0V to 10V dc
10.5V dc
32760
16380
0.0V dc
0
0
21.0mA
32760
16380
20.0mA
31200
15600
4.0mA
6240
3120
0.0mA
0
0
4mA to 20mA
Publication 1762-UM001D-EN-P - March 2004
A-20
Specifications
Publication 1762-UM001D-EN-P - March 2004
Appendix
B
Replacement Parts
MicroLogix 1200
Replacement Kits
Controller 40-Point Replacement Terminal Blocks
Catalog Number 1762-RPLRTB40
The 40-point controller removable terminal blocks kit consists of:
• one 25-point double row terminal block
• one 29-point double row terminal block
(Both terminal blocks for a 40-point controller.)
1
Publication 1762-UM001D-EN-P - March 2004
B-2
Replacement Parts
1762 Expansion I/O
Expansion I/O Replacement Doors
Catalog Number 1762-RPLDR2
The expansion I/O door kit consists of:
• Two expansion I/O terminal doors
• Two expansion I/O (bus doors)
Expansion I/O Replacement DIN Latches
Catalog Number 1762-RPLDIN2
The expansion I/O DIN latch kit consists of:
• Five DIN latches for expansion I/O
Expansion I/O Replacement Door Labels
Catalog Number 1762-RPLTLBL2
The expansion I/O terminal door label kit consists of:
• Four labels each for all available modules
Publication 1762-UM001D-EN-P - March 2004
Appendix
C
Troubleshooting Your System
This chapter describes how to troubleshoot your controller. Topics
include:
•
•
•
•
Understanding the
Controller LED Status
understanding the controller LED status
controller error recovery model
analog expansion I/O diagnostics and troubleshooting
calling Rockwell Automation for assistance
The controller status LEDs provide a mechanism to determine the
current status of the controller if a programming device is not present
or available.
Figure C.1 Controller LED Location
Table C.1 Controller LED Indicators
POWER
RUN
FAULT
FORCE
COMM 0
DCOMM
LED
Color
Indicates
POWER
off
No input power, or power error condition
green
Power on
off
Not executing the user program
0
1
2
3
4
5
6
7
8
9 10 11 12 13
green
Executing the user program in run mode
0
1
2
3
4
5
6
7
8
9
green flashing
Memory module transfer occurring
off
No fault detected
red flashing
Application fault detected
IN
OUT
RUN
FAULT
FORCE
COMM 0
(1)
DCOMM(2)
INPUTS
OUTPUTS
(1)
1
red
Controller hardware faulted
off
No forces installed
amber
Forces installed
off
Not transmitting via RS-232 port
green
Transmitting via RS-232 port
off
Configured communications
green
Default communications
off
Input is not energized
amber
Input is energized (terminal status)
off
Output is not energized
amber
Output is engerized (logic status)
1762-L24AWAR, -L24BWAR, -L24BXBR, -L40AWAR, -L40BWAR, -L40BXBR controllers are equipped with an
additional communications port (Programmer/HMI Port) but provide no additional LED indcator indicating its
operational status.
Publication 1762-UM001D-EN-P - March 2004
C-2
Troubleshooting Your System
(2)
When using a 1762-L24AWAR, -L24BWAR, -L24BXBR, -L40AWAR, -L40BWAR, or -L40BXBR controller, the
DCOMM LED applies only to Channel 0.
Normal Operation
The POWER and RUN LEDs are on. If a force condition is active, the
FORCE LED turns on and remains on until all forces are removed.
Error Conditions
If an error exists within the controller, the controller LEDs operate as
described in the following table.
If the
LEDS
indicate:
The Following Error Probable Cause
Exists
Recommended Action
All LEDs off No input power or
power supply error
No line Power
Verify proper line voltage and connections to the controller.
Power Supply
Overloaded
This problem can occur intermittently if power supply is overloaded when
output loading and temperature varies.
Power and
FAULT
LEDs on
solid
Hardware faulted
Processor Hardware
Error
Cycle power. Contact your local Allen-Bradley representative if the error
persists.
Loose Wiring
Verify connections to the controller.
Power LED
on and
FAULT LED
flashing
Application fault
Hardware/Software
Major Fault Detected
For error codes and Status File information, see MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual, Publication
1762-RM001.
RUN
Operating system
fault
Missing or Corrupt
Operating System
See Missing/Corrupt OS LED Pattern on page D-2.
FORCE
FAULT
LEDs all
flashing
Publication 1762-UM001D-EN-P - March 2004
Troubleshooting Your System
Controller Error Recovery
Model
Identify the error code and
description.
No
C-3
Use the following error recovery model to help you diagnose software
and hardware problems in the micro controller. The model provides
common questions you might ask to help troubleshoot your system.
Refer to the recommended pages within the model for further help.
Is the error
hardware related?
Start
Yes
Refer to page C-2 for
probable cause and
recommended action.
No
Are the wire
connections tight?
Tighten wire connections.
Yes
Clear Fault.
Is the Power
LED on?
No
Does the
controller have
power supplied?
Is the RUN
LED on?
Refer to page C-2 for
probable cause and
recommended action.
No
Yes
Return controller to RUN or
any of the REM test modes.
Is the Fault
LED on?
Yes
Test and verify system
operation.
Check power.
Yes
Yes
Correct the condition
causing the fault.
No
Refer to page C-2 for
probable cause and
recommended action.
No
Is an input LED
accurately showing
status?
No
Yes
Refer to page C-2 for
probably cause and
recommended action.
End
Publication 1762-UM001D-EN-P - March 2004
C-4
Troubleshooting Your System
Analog Expansion I/O
Diagnostics and
Troubleshooting
Module Operation and Channel Operation
The module performs operations at two levels:
• module level
• channel level
Module-level operations include functions such as power-up,
configuration, and communication with the controller.
Internal diagnostics are performed at both levels of operation. Both
module hardware and channel configuration error conditions are
reported to the controller. Channel over-range or under-range
conditions are reported in the module’s input data table. Module
hardware errors are reported in the controller’s I/O status file. Refer to
the MicroLogix 1200 and 1500 Programmable Controllers Instruction
Set Reference Manual, publication 1762-RM001 for more information.
When a fault condition is detected, the analog outputs are reset to
zero.
Power-up Diagnostics
At module power-up, a series of internal diagnostic tests are
performed.
Table C.2 Module Status LED State Table
Publication 1762-UM001D-EN-P - March 2004
If module
status LED is:
Indicated
condition:
Corrective action:
On
Proper Operation
No action required.
Off
Module Fault
Cycle power. If condition persists, replace the
module. Call your local distributor or
Allen-Bradley for assistance.
Troubleshooting Your System
C-5
Critical and Non-Critical Errors
Non-critical module errors are recoverable. Channel errors (over-range
or under-range errors) are non-critical. Non-critical error conditions
are indicated in the module input data table. Non-critical configuration
errors are indicated by the extended error code. See Table C.5 on
page C-7.
Critical module errors are conditions that prevent normal or
recoverable operation of the system. When these types of errors
occur, the system leaves the run mode of operation. Critical module
errors are indicated in Table C.5 on page C-7.
Module Error Definition Table
Analog module errors are expressed in two fields as four-digit Hex
format with the most significant digit as “don’t care” and irrelevant.
The two fields are “Module Error” and “Extended Error Information”.
The structure of the module error data is shown below.
Table C.3 Module Error Table
“Don’t Care” Bits
Module Error
Extended Error Information
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Hex Digit 4
Hex Digit 3
Hex Digit 2
Hex Digit 1
Publication 1762-UM001D-EN-P - March 2004
C-6
Troubleshooting Your System
Module Error Field
The purpose of the module error field is to classify module errors into
three distinct groups, as described in the table below. The type of
error determines what kind of information exists in the extended error
information field. These types of module errors are typically reported
in the controller’s I/O status file. Refer to the MicroLogix 1200 and
1500 Programmable Controllers Instruction Set Reference Manual,
publication 1762-RM001 for more information.
.
Table C.4 Module Error Types
Error Type
Module Error Field Value Description
Bits 11 through 09
(Binary)
No Errors
000
No error is present. The extended error field holds no additional information.
Hardware Errors
001
General and specific hardware error codes are specified in the extended error
information field.
Configuration Errors
010
Module-specific error codes are indicated in the extended error field. These error
codes correspond to options that you can change directly. For example, the input
range or input filter selection.
Extended Error Information Field
Check the extended error information field when a non-zero value is
present in the module error field. See Table C.5 on page C-7.
TIP
If no errors are present in the module error field, the
extended error information field is set to zero.
Hardware Errors
General or module-specific hardware errors are indicated by module
error code 2. See Table C.5.
Configuration Errors
If you set the fields in the configuration file to invalid or unsupported
values, the module ignores the invalid configuration, generates a
non-critical error, and keeps operating with the previous
configuration.
The table below lists the configuration error codes defined for the
module.
Publication 1762-UM001D-EN-P - March 2004
Troubleshooting Your System
C-7
Error Codes
Table C.5 Extended Error Codes for 1762-IF2OF2
Error Type
Hex
Equivalent(1)
Module
Extended Error Error Description
Error Code Information Code
Binary
Binary
No Error
X000
000
0 0000 0000
No error
General Common
Hardware Error
X200
001
0 0000 0000
General hardware error; no additional information
X201
001
0 0000 0001
Power-up reset state
Hardware-Specific X210
Error
001
0 0001 0000
Reserved
Configuration Error X400
010
0 0000 0000
General configuration error; no additional information
X401
010
0 0000 0001
Invalid input data format selected (channel 0)
X402
010
0 0000 0010
Invalid input data format selected (channel 1)
X403
010
0 0000 0011
Invalid output data format selected (channel 0)
X404
010
0 0000 0100
Invalid output data format selected (channel 1)
(1)
X represents “Don’t Care”.
Table C.6 Extended Error Codes for 1762-IF4 and 1762-OF4
Error Type
Hex
Equivalent(1)
Module
Extended Error Error Description
Error Code Information Code
Binary
Binary
No Error
X000
000
0 0000 0000
No error
General Common
Hardware Error
X200
001
0 0000 0000
General hardware error; no additional information
X201
001
0 0000 0001
Power-up reset state
X300
001
1 0000 0000
Reserved
Configuration Error X400
010
0 0000 0000
General configuration error; no additional information
X401
010
0 0000 0001
Invalid range select (Channel 0)
X402
010
0 0000 0010
Invalid range select (Channel 1)
X403
010
0 0000 0011
Invalid range select (Channel 2)
X404
010
0 0000 0100
Invalid range select (Channel 3)
X405
010
0 0000 0101
Invalid filter select (Channel 0) – 1762-IF4 only
X406
010
0 0000 0110
Invalid filter select (Channel 1) – 1762-IF4 only
X407
010
0 0000 0111
Invalid filter select (Channel 2) – 1762-IF4 only
X408
010
0 0000 1000
Invalid filter select (Channel 3) – 1762-IF4 only
X409
010
0 0000 1001
Invalid format select (Channel 0)
X40A
010
0 0000 1010
Invalid format select (Channel 1)
X40B
010
0 0000 1011
Invalid format select (Channel 2)
X40C
010
0 0000 1100
Invalid format select (Channel 3)
HardwareSpecific Error
(1)
X represents “Don’t Care”.
Publication 1762-UM001D-EN-P - March 2004
C-8
Troubleshooting Your System
Calling Rockwell
Automation for Assistance
If you need to contact Rockwell Automation or local distributor for
assistance, it is helpful to obtain the following (prior to calling):
• controller type, series letter, revision letter, and firmware (FRN)
number of the controller
• controller LED status
• controller error codes (Refer to MicroLogix 1200 and 1500
Programmable Controllers Instruction Set Reference Manual,
Publication 1762-RM001 for error code information.)
Publication 1762-UM001D-EN-P - March 2004
Appendix
D
Using Control Flash to Upgrade Your
Operating System
The operating system (OS) can be upgraded through the
communication port on the controller. In order to download a new
operating system, you must have the following:
• ControlFlash™ Upgrade Kit containing the new OS
Go to http://www.ab.com/micrologix to download the upgrade
kit.
• a Windows 95®, Windows 98®, Windows 2000® or
Windows NT™ based computer to run the download software.
The ControlFlash™ Upgrade Kit includes:
• the operating system upgrade to be downloaded
• the ControlFlash programming tool, along with its support
drivers and on-line help
• a readme first file explaining how to upgrade the operating
system
Preparing for Upgrade
Before upgrading the controller’s operating system, you must:
• install ControlFlash software on your personal computer
• prepare the controller for updating
IMPORTANT
Installing a new operating system deletes the user
program. After the operating system upgrade is
successful, you must transfer your control program
back to the controller. The communication
parameters are described on Table 4.1 on page 4-2.
Install ControlFlash Software
For 1762-Lxxxxx controllers, double click the 1762-LSC-FRNxx.exe file
to install the operating system upgrade (where xx is the firmware
revision number).
1
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D-2
Using Control Flash to Upgrade Your Operating System
For 1762-LxxxxxR controllers, double click the 1762-LRC-FRNxx.exe
file to install the operating system upgrade.
Prepare the Controller for Updating
Controller Configuration
The controller must be configured for default communications (use
communications toggle push button; DCOMM LED on) and be in the
Program mode to allow the download of a new operating system.
Sequence of Operation
The following steps detail the key events in the upgrade process.
1. Controller mode and communications parameters are checked.
2. Download begins.
3. During the download, the Force, Battery, and Comms LEDs
perform a walking bit pattern.
4. When the download is complete, the integrity of the new OS is
checked. If the new OS is corrupt, the controller sends an error
message to the download tool and flashes the Missing or
Corrupt OS LED pattern. See Missing/Corrupt OS LED Pattern
below.
5. Following a successful transfer, the Power, Force, and Battery
LEDs flash on and remain on for five seconds. Then the
controller resets.
Missing/Corrupt OS LED
Pattern
Publication 1762-UM001D-EN-P - March 2004
When an operating system download is not successful or if the
controller does not contain a valid operating system, the controller
flashes the Run, Force, and Fault LEDS on and off.
Appendix
E
Connecting to Networks via RS-232 Interface
The following protocols are supported from the RS-232
communication channel:
•
•
•
•
•
RS-232 Communication
Interface
DF1 Full Duplex
DF1 Half Duplex
DH-485
Modbus
ASCII
The communications port on the MicroLogix 1200 utilizes an RS-232
interface. RS-232 is an Electronics Industries Association (EIA)
standard that specifies the electrical and mechanical characteristics for
serial binary communication. It provides you with a variety of system
configuration possibilities. (RS-232 is a definition of electrical
characteristics; it is not a protocol.)
One of the biggest benefits of an RS-232 interface is that it lets you
integrate telephone and radio modems into your control system (using
the appropriate DF1 protocol only, not DH-485 protocol).
DF1 Full-Duplex Protocol
DF1 Full-Duplex protocol provides a point-to-point connection
between two devices. DF1 Full-Duplex protocol combines data
transparency (American National Standards Institute ANSI - X3.28-1976
specification subcategory D1) and 2-way simultaneous transmission
with embedded responses (subcategory F1).
The MicroLogix 1200 controllers support the DF1 Full-Duplex protocol
via RS-232 connection to external devices, such as computers, or other
controllers that support DF1 Full-Duplex.
DF1 is an open protocol. Refer to DF1 Protocol and Command Set
Reference Manual, publication 1770-6.5.16, for more information.
DF1 Full-Duplex protocol (also referred to as DF1 point-to-point
protocol) is useful where RS-232 point-to-point communication is
required. DF1 protocol controls message flow, detects and signals
errors, and retries if errors are detected.
1
Publication 1762-UM001D-EN-P - March 2004
E-2
Connecting to Networks via RS-232 Interface
Example DF1 Full-Duplex Connections
For information about required network connecting equipment, see
Chapter 4, Communication Connections.
1761-CBL-AM00 or 1761-CBL-HM02
Personal Computer
MicroLogix 1200
TERM
A
B
COM
SHLD
CHS GND
TX
TX
Personal Computer
TX
PWR
DC SOURCE
CABLE
EXTERNAL
Optical
Isolator
Modem cable
1761-CBL-PM02
Modem
MicroLogix 1200
Optical Isolator
TERM
A
B
COM
SHLD
CHS GND
Modem
TX
TX
TX
PWR
DC SOURCE
CABLE
EXTERNAL
1761-CBL-PM02
We recommend using an AIC+, catalog number 1761-NET-AIC, as
your optical isolator.
DF1 Half-Duplex Protocol
DF1 Half-Duplex protocol is a multi-drop single master/multiple slave
network. DF1 Half-Duplex protocol supports data transparency
(American National Standards Institute ANSI - X3.28-1976 specification
subcategory D1). In contrast to DF1 Full-Duplex, communication
takes place in one direction at a time. You can use the RS-232 port on
the MicroLogix 1200 as both a Half-Duplex programming port and a
Half-Duplex peer-to-peer messaging port.
MicroLogix 1200 can act as the master or as a slave on a Half-Duplex
network. When the MicroLogix 1200 is a slave device, a master device
is required to "run" the network. Several other Allen-Bradley products
support DF1 Half-Duplex master protocol. They include the SLC
5/03™ and higher processors, enhanced PLC-5® processors and
Rockwell Software RSLinx (version 2.x and higher).
DF1 Half-Duplex supports up to 255 devices (address 0 to 254) with
address 255 reserved for master broadcasts. As a DF1 Half-Duplex
slave device, the MicroLogix 1200 supports broadcast reception. As a
DF1 Half-Duplex master, the MicroLogix 1200 supports both the
reception and initiation of broadcast write commands (via the MSG
instruction). The MicroLogix 1200 also supports Half-Duplex modems
using RTS/CTS hardware handshaking.
Publication 1762-UM001D-EN-P - March 2004
Connecting to Networks via RS-232 Interface
E-3
Example DF1 Half-Duplex Connections
Rockwell Software RSLinx 2.0 (or
higher), SLC 5/03, SLC 5/04, and
SLC 5/05, or PLC-5 processors
configured for DF1 Half-Duplex
Master.
TERM
Modem
TERM
A
TERM
A
B
A
B
COM
B
COM
SHLD
COM
SHLD
CHS GND
TX
TX
RS-232
SHLD
CHS GND
TX
TX
PWR
TX
DC SOURCE
CHS GND
TX
TX
PWR
TX
DC SOURCE
CABLE
EXTERNAL
PWR
CABLE
EXTERNAL
MicroLogix
1000 (Slave)
TX
DC SOURCE
CABLE
EXTERNAL
MicroLogix
1200 (Slave)
MicroLogix
1500 (Slave)
SLC 5/04 (Slave)
SLC 5/03 with
1747-KE Interface
Module (Slave)
Using Modems with MicroLogix 1200 Programmable Controllers
The types of modems you can use with MicroLogix 1200 controllers
include the following:
• dial-up phone modems
A MicroLogix 1200 controller, on the receiving end of the
dial-up connection, can be configured for DF1 Full-Duplex
protocol with or without handshaking. The modem connected
to the MicroLogix controller should support auto-answer. The
MicroLogix 1200 supports ASCII out communications. Therefore,
it can cause a modem to initiate or disconnect a phone call.
• leased-line modems
Leased-line modems are used with dedicated phone lines that
are typically leased from the local phone company. The
dedicated lines may be in a point-to-point topology supporting
Full-Duplex communications between two modems or in a
multi-drop topology supporting Half-Duplex communications
between three or more modems.
Publication 1762-UM001D-EN-P - March 2004
E-4
Connecting to Networks via RS-232 Interface
• radio modems
Radio modems may be implemented in a point-to-point
topology supporting either Half-Duplex or Full-Duplex
communications, or in a multi-drop topology supporting
Half-Duplex communications between three or more modems.
MicroLogix 1200 also supports DF1 Radio Modem protocol.
• line drivers
Line drivers, also called short-haul modems, do not actually
modulate the serial data, but rather condition the electrical
signals to operate reliably over long transmission distances (up
to several miles). Line drivers are available in Full-Duplex and
Half-Duplex models. Allen-Bradley’s AIC+ Advanced Interface
Converter is a Half-Duplex line driver that converts an RS-232
electrical signal into an RS-485 electrical signal, increasing the
signal transmission distance from 50 to 4000 feet (8000 feet
when bridged).
For point-to-point Full-Duplex modem connections that do not
require any modem handshaking signals to operate, use DF1
Full-Duplex protocol with no handshaking. For point-to-point
Full-Duplex modem connections that require RTS/CTS handshaking,
use DF1 Full-Duplex protocol with handshaking.
For radio modem connections, use DF1 Radio Modem protocol,
especially if store and forward capability is required.
For general multi-drop modem connections, or for point-to-point
modem connections that require RTS/CTS handshaking, use DF1
Half-Duplex slave protocol. In this case, one (and only one) of the
other devices must be configured for DF1 Half-Duplex master
protocol.
IMPORTANT
TIP
Publication 1762-UM001D-EN-P - March 2004
Never attempt to use DH-485 protocol through
modems under any circumstance.
All MicroLogix 1200 controllers support RTS/CTS
modem handshaking when configured for DF1
Full-Duplex protocol with the control line parameter
set to Full-Duplex Modem Handshaking or DF1
Half-Duplex slave protocol with the control line
parameter set to “Half-Duplex Modem”. No other
modem handshaking lines (i.e. Data Set Ready,
Carrier Detect and Data Terminal Ready) are
supported by any MicroLogix 1200 controllers.
Connecting to Networks via RS-232 Interface
DH-485 Communication
Protocol
E-5
The DH-485 protocol defines the communication between multiple
devices that coexist on a single pair of wires. DH-485 protocol uses
RS-485 Half-Duplex as its physical interface. (RS-485 is a definition of
electrical characteristics; it is not a protocol.) RS-485 uses devices that
are capable of co-existing on a common data circuit, thus allowing
data to be easily shared between devices.
The DH-485 protocol supports two classes of devices: initiators and
responders. All initiators on the network get a chance to initiate
message transfers. To determine which initiator has the right to
transmit, a token passing algorithm is used.
Devices that use the DH-485 Network
In addition to the MicroLogix 1200 controllers, the devices shown in
the following table also support the DH-485 network.
Table E.1 Allen-Bradley Devices that Support DH-485 Communication
Catalog
Number
Bulletin 1761
Controllers
Bulletin 1764
Description
Installation Function
Publication
MicroLogix 1000
1761-6.3
Bulletin 1747
Processors
1746-BAS
SLC 500
Processors
BASIC Module
1785-KA5
DH+TM/DH-485
Gateway
2760-RB
Flexible Interface
Module
Series C or These controllers support DH-485 communications.
higher
Series A or These controllers support DH-485 communications.
higher
SLC Chassis These processors support a variety of I/O requirements and
functionality.
SLC Chassis Provides an interface for SLC 500 devices to foreign devices.
Program in BASIC to interface the 3 channels (2 RS232 and 1
DH-485) to printers, modems, or the DH-485 network for data
collection.
(1771) PLC
Provides communication between stations on the PLC-5® (DH+)
Chassis
and SLC 500 (DH-485) networks. Enables communication and
data transfer from PLC® to SLC 500 on DH-485 network. Also
enables programming software programming or data acquisition
across DH+ to DH-485.
(1771) PLC
Provides an interface for SLC 500 (using protocol cartridge
Chassis
2760-SFC3) to other A-B PLCs and devices. Three configurable
channels are available to interface with Bar Code, Vision, RF,
Dataliner™, and PLC systems.
IBM XT/AT Provides DH-485 using RSLinx.
Computer
Bus
PCMCIA slot Provides DH-485 using RSLinx.
in computer
and
Interchange
NA
Provides hand-held programming, monitoring, configuring, and
troubleshooting capabilities for SLC 500 processors.
MicroLogix 1500
1784-KTX,
-KTXD
PC DH-485 IM
1784-PCMK
PCMCIA IM
1747-PT1
Hand-Held
Terminal
1764-UM001
1747-UM011
1746-UM004
1746-PM001
1746-RM001
1785-6.5.5
1785-1.21
1747-6.12
2760-ND001
1784-6.5.22
1784-6.5.19
1747-NP002
Publication 1762-UM001D-EN-P - March 2004
E-6
Connecting to Networks via RS-232 Interface
Table E.1 Allen-Bradley Devices that Support DH-485 Communication
Catalog
Number
1747-DTAM,
2707-L8P1,
-L8P2, -L40P1,
-L40P2,
-V40P1,
-V40P2,
-V40P2N,
-M232P3, and
-M485P3
2711-K5A2,
-B5A2, -K5A5,
-B5A5, -K5A1,
-B5A1, -K9A2,
-T9A2, -K9A5,
-T9A5, -K9A1,
and -T9A1
Description
Installation Function
Publication
DTAM, DTAM
Plus, and DTAM
Micro Operator
Interfaces
Panel Mount Provides electronic operator interface for SLC 500 processors.
1747-6.1
2707-800,
2707-803
PanelView 550 and Panel Mount Provides electronic operator interface for SLC 500 processors.
PanelView 900
Operator Terminals
2711-UM014
NA = Not Applicable
Important DH-485 Network Planning Considerations
Carefully plan your network configuration before installing any
hardware. Listed below are some of the factors that can affect system
performance:
• amount of electrical noise, temperature, and humidity in the
network environment
• number of devices on the network
• connection and grounding quality in installation
• amount of communication traffic on the network
• type of process being controlled
• network configuration
The major hardware and software issues you need to resolve before
installing a network are discussed in the following sections.
Hardware Considerations
You need to decide the length of the communication cable, where
you route it, and how to protect it from the environment where it will
be installed.
When the communication cable is installed, you need to know how
many devices are to be connected during installation and how many
Publication 1762-UM001D-EN-P - March 2004
Connecting to Networks via RS-232 Interface
E-7
devices will be added in the future. The following sections help you
understand and plan the network.
Number of Devices and Length of Communication Cable
The maximum length of the communication cable is 1219m (4000 ft).
This is the total cable distance from the first node to the last node in a
segment. However, two segments can be used to extend the DH-485
network to 2438m (8000 ft). For additional information on
connections using the AIC+, refer to the Advanced Interface Converter
(AIC+) User Manual, publication 1761-6.4.
Planning Cable Routes
Follow these guidelines to help protect the communication cable from
electrical interference:
• Keep the communication cable at least 1.52m (5 ft) from any
electric motors, transformers, rectifiers, generators, arc welders,
induction furnaces, or sources of microwave radiation.
• If you must run the cable across power feed lines, run the cable
at right angles to the lines.
• If you do not run the cable through a contiguous metallic
wireway or conduit, keep the communication cable at least
0.15m (6 in.) from ac power lines of less than 20A, 0.30m (1 ft)
from lines greater than 20A, but only up to 100K VA, and 0.60m
(2 ft) from lines of 100K VA or more.
• If you run the cable through a contiguous metallic wireway or
conduit, keep the communication cable at least 0.08m (3 in.)
from ac power lines of less than 20A, 0.15m (6 in.) from lines
greater than 20A, but only up to 100K VA, and 0.30m (1 ft) from
lines of 100K VA or more.
Running the communication cable through conduit provides
extra protection from physical damage and electrical
interference. If you route the cable through conduit, follow
these additional recommendations:
– Use ferromagnetic conduit near critical sources of electrical
interference. You can use aluminum conduit in non-critical
areas.
– Use plastic connectors to couple between aluminum and
ferromagnetic conduit. Make an electrical connection around
the plastic connector (use pipe clamps and the heavy gauge
wire or wire braid) to hold both sections at the same
potential.
Publication 1762-UM001D-EN-P - March 2004
E-8
Connecting to Networks via RS-232 Interface
– Ground the entire length of conduit by attaching it to the
building earth ground.
– Do not let the conduit touch the plug on the cable.
– Arrange the cables loosely within the conduit. The conduit
should contain only serial communication cables.
– Install the conduit so that it meets all applicable codes and
environmental specifications.
For more information on planning cable routes, see Industrial
Automation Wiring and Grounding Guidelines, publication Number
1770-4.1.
Software Considerations
Software considerations include the configuration of the network and
the parameters that can be set to the specific requirements of the
network. The following are major configuration factors that have a
significant effect on network performance:
• number of nodes on the network
• addresses of those nodes
• baud rate
The following sections explain network considerations and describe
ways to select parameters for optimum network performance (speed).
See your programming software’s user manual for more information.
Number of Nodes
The number of nodes on the network directly affects the data transfer
time between nodes. Unnecessary nodes (such as a second
programming terminal that is not being used) slow the data transfer
rate. The maximum number of nodes on the network is 32.
Setting Node Addresses
The best network performance occurs when node addresses are
assigned in sequential order. Initiators, such as personal computers,
should be assigned the lowest numbered addresses to minimize the
time required to initialize the network. The valid range for the
MicroLogix 1200 controllers is 1-31 (controllers cannot be node 0).
The default setting is 1. The node address is stored in the controller
Communications Status file (CS0:5/0 to CS0:5/7).
Publication 1762-UM001D-EN-P - March 2004
Connecting to Networks via RS-232 Interface
E-9
Setting Controller Baud Rate
The best network performance occurs at the highest baud rate, which
is 19200. This is the default baud rate for a MicroLogix 1200 device on
the DH-485 network. All devices must be at the same baud rate. This
rate is stored in the controller Communications Status file (CS0:5/8 to
CS0:5/15).
Setting Maximum Node Address
Once you have an established network set up and are confident that
you will not be adding more devices, you may enhance performance
by adjusting the maximum node address of your controllers. It should
be set to the highest node address being used.
IMPORTANT
All devices should be set to the same maximum node
address.
Example DH-485 Connections
The following network diagrams provide examples of how to connect
MicroLogix 1200 controllers to the DH-485 network using the
Advanced Interface Converter (AIC+, catalog number 1761-NET-AIC).
For more information on the AIC+, see the Advanced Interface
Converter and DeviceNet Interface Installation Instructions,
Publication 1761-5.11.
DH-485 Network with a MicroLogix 1200 Controller
MicroLogix
connection from port 1 or
port 2 to MicroLogix
1761-CBL-AP00 or
1761-CBL-PM02
1761-CBL-AM00 or
1761-CBL-HM02
(3)
(2)
TERM
A
B
COM
SHLD
CHS GND
TX
TX
TX
PWR
AIC+
DC SOURCE
CABLE
(1) DB-9 RS-232 port
(1)
(2) mini-DIN 8 RS-232 port
+24V dc user supply
EXTERNAL
connection from port 1
or port 2 to PC
1761-CBL-AP00 or
1761-CBL-PM02
AIC+
(3)
(2)
TERM
A
B
COM
SHLD
CHS GND
TX
TX
1747-CP3 or
1761-CBL-AC00
TX
PWR
DC SOURCE
CABLE
(1)
(3) RS-485 port
DH-485
EXTERNAL
+24V dc user supply
Publication 1762-UM001D-EN-P - March 2004
E-10
Connecting to Networks via RS-232 Interface
Series C or higher cables are required.
TIP
Typical 3-Node Network
PanelView 550
A-B
PanelView
MicroLogix 1200
1761-CBL-AM00
or 1761-CBL-HM02
RJ45 port
AIC+
1761-CBL-AS09
or 1761-CBL-AS03
TERM
A
B
COM
SHLD
CHS GND
TX
TX
TX
PWR
DC SOURCE
CABLE
EXTERNAL
1747-CP3 or 1761-CBL-AC00
This 3-node network is not expandable.
TIP
Networked Operator Interface Device and MicroLogix Controllers
AIC+
AIC+
TERM
TERM
A
B
COM
COM
SHLD
SHLD
CHS GND
TX
A-B
A
B
TX
TX
PWR
TX
DC SOURCE
TX
PWR
DC SOURCE
CABLE
CABLE
EXTERNAL
EXTERNAL
SLC 5/04
PanelView 550
DH-485 Network
AIC+
AIC+
TERM
A
TERM
A
B
TX
PWR
TX
DC SOURCE
TX
PWR
TX
TX
PWR
TX
PWR
CABLE
EXTERNAL
MicroLogix 1200
TX
DC SOURCE
CABLE
EXTERNAL
MicroLogix 1000
CHS GND
TX
DC SOURCE
CABLE
EXTERNAL
SHLD
CHS GND
TX
DC SOURCE
CABLE
COM
SHLD
CHS GND
TX
B
COM
SHLD
CHS GND
A
B
COM
SHLD
TERM
A
B
COM
TX
AIC+
AIC+
TERM
TX
PanelView
CHS GND
TX
EXTERNAL
Personal
Computer
MicroLogix 1500
MicroLogix Remote Packet Support
MicroLogix 1200 controllers can respond and initiate with
communications (or commands) that do not originate on the local
DH-485 network. This is useful in installations where communication
is needed between DH-485 and DH+ networks.
The example below shows how to send messages from a device on
the DH+ network to a MicroLogix controller on the DH-485 network.
This method uses an SLC 5/04 processor as the bridge connection.
When using this method (as shown in the illustration below):
Publication 1762-UM001D-EN-P - March 2004
Connecting to Networks via RS-232 Interface
E-11
• PLC-5 devices can send read and write commands to MicroLogix
1200 controllers.
• MicroLogix 1200 controllers can respond to MSG instructions
received.
• The MicroLogix 1200 controllers can initiate MSG instructions to
devices on the DH+ network.
• PC can send read and write commands to MicroLogix 1200
controllers.
• PC can do remote programming of MicroLogix 1200 controllers.
AIC+
AIC+
TERM
TERM
A
A-B
A
B
B
COM
COM
SHLD
SHLD
CHS GND
PanelView
CHS GND
TX
TX
TX
TX
TX
PWR
TX
PWR
DC SOURCE
DC SOURCE
CABLE
CABLE
EXTERNAL
EXTERNAL
SLC 5/04
PanelView 550
DH-485 Network
AIC+
AIC+
TERM
TERM
A
A
A
B
B
B
COM
COM
COM
SHLD
SHLD
SHLD
CHS GND
AIC+
AIC+
TERM
CHS GND
TERM
A
CHS GND
B
COM
TX
TX
TX
TX
TX
TX
SHLD
CHS GND
TX
TX
PWR
TX
DC SOURCE
PWR
TX
DC SOURCE
CABLE
TX
PWR
DC SOURCE
CABLE
CABLE
TX
PWR
DC SOURCE
EXTERNAL
EXTERNAL
CABLE
EXTERNAL
EXTERNAL
MicroLogix 1000
MicroLogix 1200
MicroLogix 1500
SLC 5/04
DH+ Network
Personal Computer
SLC 5/04
PLC-5
Publication 1762-UM001D-EN-P - March 2004
E-12
Connecting to Networks via RS-232 Interface
Modbus Communication
Protocol
Modbus is a Half-Duplex, master-slave communications protocol. The
Modbus network master reads and writes coils and registers. Modbus
protocol allows a single master to communicate with a maximum of
247 slave devices. MicroLogix 1200 controllers support Modbus RTU
Master and Modbus RTU Slave protocol.
For more information on configurating your MicroLogix 1200
controller for Modbus protocol, refer to the MicroLogix 1200 and
1500 Programmable Controllers Instruction Set Reference Manual,
publication 1762-RM001. For more information about the Modbus
protocol, see the Modbus Protocol Specifications (available from
http://www.modbus.org).
ASCII
ASCII provides connection to other ASCII devices, such as bar code
readers, weigh scales, serial printers, and other intelligent devices.
You can use ASCII by configuring the RS-232 port, channel 0 for ASCII
driver. Refer to the MicroLogix 1200 and MicroLogix 1500
Programmable Controllers Instruction Set Reference Manual,
publication 1762-RM001 for detailed configuration information.
Publication 1762-UM001D-EN-P - March 2004
Appendix
F
System Loading and Heat Dissipation
System Loading Limitations
When you connect MicroLogix accessories and expansion I/O, an
electrical load is placed on the controller power supply. This section
shows how to calculate the load and validate that the system will not
exceed the capacity of the controller power supply.
The following example is provided to illustrate system loading
validation. The system validation procedure accounts for the amount
of 5V dc and 24V dc current consumed by controller, expansion I/O,
and user-supplied equipment. Use the System Loading Worksheet on
page F-3 to validate your specific 24-point controller configuration.
Use the System Loading Worksheet on page F-8 to validate your
specific 40-point controller.
Current consumed by the processor, memory modules, and the
real-time clock modules has already been factored into the
calculations. A system is valid if the current and power requirements
are satisfied.
System Loading Example Calculations (24-Point Controller)
Current Loading
Table F.1 Calculating the Current for MicroLogix Accessories
Catalog Number
Device Current Requirements Calculated Current
at 5V dc (mA)
1761-NET-AIC when powered by the base unit communications 0
port, selector switch in the up position
(1)
Subtotal 1:
at 24V dc (mA) at 5V dc (mA)
at 24V dc (mA)
120
0
120
0
120
(1) This is an optional accessory. Current is consumed only if the accessory is installed.
1
Publication 1762-UM001D-EN-P - March 2004
F-2
System Loading and Heat Dissipation
Table F.2 Calculating the Current for Expansion I/O
n
A
Number of
Modules
Device Current Requirements
(max)
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
at 24V dc (mA)
50
0
100
0
1762-IF4
40
50
1762-IF2OF2
40
105
1762-IQ8
50
0
1762-IQ16
60
0
1762-IR4
40
50
1762-IT4
40
50
1762-OA8
115
0
1762-OB8
115
0
1762-OB16
175
0
1762-OF4
40
165
80
90
160
180
1762-OW16
120
140
1762-OX6I
110
110
260
180
Catalog Number(1)
1762-IA8
1762-OW8
Total Modules (6 maximum):
2
2
4
B
Subtotal 2:
nxA
nxB
(1) Refer to your expansion I/O Installation Instructions for Current Requirements not listed in this table.
Validating the System
The example systems shown in the tables below are verified to be
acceptable configurations. The systems are valid because:
• Calculated Current Values < Maximum Allowable Current
Values
• Calculated System Loading < Maximum Allowable System
Loading
Publication 1762-UM001D-EN-P - March 2004
System Loading and Heat Dissipation
F-3
Table F.3 Validating Systems Using 1762-L24AWA, 1762-L24BXB, 1762-L24AWAR or 1762-L24BXBR
Maximum Allowable Values
Calculated Values
Current:
Current (Subtotal 1 + Subtotal 2 from Table F.1 and Table F.2 on page F-2.):
400 mA at 5V dc
350 mA at 24V dc
System Loading:
0 mA + 260 mA = 260 mA at 5V dc
120 mA + 180 mA = 300 mA at 24V dc
System Loading:
= (260 mA x 5V) + (300 mA x 24V)
= (1300 mW) + (7200 mW)
= 8500 mW
= 8.50 Watts
10.4 Watts
Table F.4 Validating Systems using 1762-L24BWA or 1762-L24BWAR
Maximum Allowable Values
Calculated Values
Current for Devices Connected to the +24V dc
Sensor Supply:
Sum of all sensor currents
250 mA at 24V dc
140 mA at 24V dc (example sensor value)
Current for MicroLogix Accessories and
Expansion I/O:
Current Values (Subtotal 1 from Table F.1 + Subtotal 2 from Table F.2):
400 mA at 5V dc
0 mA + 260 mA = 260 mA at 5V dc
350 mA at 24V dc
System Loading:
120 mA + 180 mA = 300 mA at 24V dc
System Loading:
= (140 mA x 24V) + (260 mA x 5V) + (300 mA x 24V)
= (3360 mW) + (1300 mW) + (7200 mW)
= 11,860 mW
12 Watts
System Loading Worksheet
= 11.9 Watts
The tables below are provided for system loading validation for
24-Point Controllers. See System Loading Example Calculations
(24-Point Controller) on page F-1.
Publication 1762-UM001D-EN-P - March 2004
F-4
System Loading and Heat Dissipation
Current Loading
Table F.5 Calculating the Current for MicroLogix Accessories
Catalog Number
1761-NET-AIC(1) when powered by the base unit
communications port, selector switch in the up position
Device Current Requirements
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
0
120
at 24V dc (mA)
Subtotal 1:
(1) This is an optional accessory. Current is consumed only if the accessory is installed.
Table F.6 Calculating the Current for Expansion I/O
n
A
Number of
Modules
Device Current Requirements
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
1762-IA8
50
0
1762-IF4
40
50
1762-IF2OF2
40
105
1762-IQ8
50
0
1762-IQ16
60
0
1762-IR4
40
50
1762-IT4
40
50
1762-OA8
115
0
1762-OB8
115
0
1762-OB16
175
0
1762-OF4
40
165
1762-OW8
80
90
1762-OW16
120
140
1762-OX6I
110
110
Total Modules (6 maximum):
Subtotal 2:
Catalog Number(1)
B
(1) Refer to your expansion I/O Installation Instructions for Current Requirements not listed in this table.
Publication 1762-UM001D-EN-P - March 2004
nxA
nxB
at 24V dc (mA)
System Loading and Heat Dissipation
F-5
Table F.7 Validating Systems using 1762-L24AWA, 1762-L24BXB, 1762-L24AWAR or 1762-L24BXBR
Maximum Allowable Values
Calculated Values
Current:
Current (Subtotal 1 from Table F.5 + Subtotal 2 from Table F.6.):
400 mA at 5V dc
350 mA at 24V dc
System Loading:
mA at 5V dc
mA at 24V dc
System Loading:
= (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW
= __________ mW
= __________ W
10.4 Watts
Table F.8 Validating Systems using 1762-L24BWA or 1762-L24BWAR
Maximum Allowable Values
Calculated Values
Current for Devices Connected to the +24V dc Sensor
Supply:
Sum of all sensor currents
Include 1761-NET-AIC here rather than in Table F.5, if it is powered externally by
the sensor supply
250 mA at 24V dc
mA at 24V dc
Current for MicroLogix Accessories and Expansion I/O: Current (Subtotal 1 from Table F.5 + Subtotal 2 from Table F.6.)
400 mA at 5V dc
350 mA at 24V dc
mA at 5 V dc
System Loading:
mA at 24V dc
System Loading:
= (________ mA x 24V) + (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW + __________ mW
= __________ mW
= __________ W
12 Watts
System Loading Example Calculations (40-Point Controller)
Current Loading
Table F.9 Calculating the Current for MicroLogix Accessories
Catalog Number
1761-NET-AIC(1) when powered by the base unit
communications port, selector switch in the up position
Device Current Requirements
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc
(mA)
at 24V dc
(mA)
0
120
0
120
0
120
Subtotal 1:
(1) This is an optional accessory. Current is consumed only if the accessory is installed.
Publication 1762-UM001D-EN-P - March 2004
F-6
System Loading and Heat Dissipation
Table F.10 Calculating the Current for Expansion I/O
n
A
Number of
Modules
Device Current Requirements (max)
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
at 24V dc (mA)
1762-IA8
50
0
1762-IF4
40
50
40
105
40
105
50
0
60
0
120
0
1762-IR4
40
50
1762-IT4
40
50
115
0
115
0
1762-OB8
115
0
1762-OB16
175
0
1762-OF4
40
165
1762-OW8
80
90
120
140
120
140
110
110
395
245
Catalog Number(1)
1762-IF2OF2
1
1762-IQ8
1762-IQ16
2
1762-OA8
1
1762-OW16
1
1762-OX6I
Total Modules (6 maximum):
6
B
Subtotal 2:
nxA
nxB
(1) Refer to your expansion I/O Installation Instructions for Current Requirements not listed in this table.
Validating the System
The example systems shown in Table F.11 and Table F.12 are verified
to be acceptable configurations. The systems are valid because:
• Calculated Current Values < Maximum Allowable Current
Values
• Calculated System Loading < Maximum Allowable System
Loading
Table F.11 Validating Systems using 1762-L40AWA, 1762-L40BXB, 1762-L40AWAR or 1762-L40BXBR
Maximum Allowable Values
Calculated Values
Current:
Current (Subtotal 1 from Table F.9 + Subtotal 2 from Table F.10):
600 mA at 5V dc
500 mA at 24V dc
0 mA + 395 mA = 395 mA at 5V dc
System Loading:
System Loading:
15 Watts
= (395 mA x 5V) + (365 mA x 24V)
= (1975 mW) + (8760 mW)
= 10,735 mW
= 10.74 Watts
Publication 1762-UM001D-EN-P - March 2004
120 mA + 245 mA = 365 mA at 24V dc
System Loading and Heat Dissipation
F-7
Table F.12 Validating Systems using 1762-L40BWA or 1762-L40BWAR
Maximum Allowable Values
Calculated Values
Current for Devices Connected to the +24V dc
Sensor Supply:
Sum of all current sensors
400 mA at 24V dc
150 mA at 24V dc (example sensor value)
Current for MicroLogix Accessories and
Expansion I/O:
Current (Subtotal 1 from Table F.9 + Subtotal 2 from Table F.10):
600 mA at 5V dc
0 mA + 395 mA = 395 mA at 5V dc
500 mA at 24V dc
System Loading:
120 mA + 245 mA = 365 mA at 24V dc
System Loading:
= (150 mA x 24V) + (395 mA x 5V) + (365 mA x 24V)
= (3600 mW) + (1975 mW) + (8760 mW)
= 14335 W
= 14.34 Watts
16 Watts
System Loading Worksheet
The tables below are provided for system loading validation for
40-Point Controllers. See System Loading Example Calculations
(40-Point Controller) on page F-5.
Current Loading
Table F.13 Calculating the Current for MicroLogix Accessories
Catalog Number
1761-NET-AIC(1) when powered by the base unit
communications port, selector switch in the up position
Device Current Requirements
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
0
120
at 24V dc (mA)
Subtotal 1:
(1) This is an optional accessory. Current is consumed only if the accessory is installed.
Table F.14 Calculating the Current for Expansion I/O
n
A
Number of
Modules
Device Current Requirements
Calculated Current
at 5V dc (mA)
at 24V dc (mA)
at 5V dc (mA)
1762-IA8
50
0
1762-IQ8
50
0
Catalog Number(1)
B
nxA
nxB
at 24V dc (mA)
Publication 1762-UM001D-EN-P - March 2004
F-8
System Loading and Heat Dissipation
Table F.14 Calculating the Current for Expansion I/O
1762-IF4
40
50
1762-IF2OF2
40
105
1762-IQ16
60
0
1762-IR4
40
50
1762-IT4
40
50
1762-OA8
115
0
1762-OB8
115
0
1762-OB16
175
0
1762-OF4
40
165
1762-OW8
80
90
1762-OW16
120
140
1762-OX6I
110
110
Total Modules (6 maximum):
Subtotal 2:
(1) Refer to your expansion I/O Installation Instructions for Current Requirements not listed in this table.
Table F.15 Validating Systems using 1762-L40AWA, 1762-L40BXB, 1762-L40AWAR or 1762-L40BXBR
Maximum Allowable Values
Calculated Values
Current:
Current (Subtotal 1 from Table F.13 + Subtotal 2 from Table F.14.):
600 mA at 5V dc
500 mA at 24V dc
System Loading:
System Loading:
= (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW
= __________ mW
= __________ W
15 Watts
Table F.16 Validating Systems using 1762-L40BWA or 1762-L40BWAR
Maximum Allowable Values
Calculated Values
Current for Devices Connected to the +24V dc Sensor
Supply:
Sum of all sensor currents
Include 1761-NET-AIC here rather than in Table F.13, if it is powered externally
by the sensor supply
400 mA at 24V dc
mA at 24V dc
Current for MicroLogix Accessories and Expansion I/O: Current (Subtotal 1 from Table F.13 + Subtotal 2 from page Table F.14.):
600 mA at 5V dc
500 mA at 24V dc
System Loading:
Publication 1762-UM001D-EN-P - March 2004
mA at 5 V dc
System Loading:
mA at 24V dc
System Loading and Heat Dissipation
F-9
Table F.16 Validating Systems using 1762-L40BWA or 1762-L40BWAR
= (________ mA x 24V) + (________ mA x 5V) + (________ mA x 24V)
= __________ mW + __________ mW + __________ mW
= __________ mW
= __________ W
16 Watts
Calculating Heat
Dissipation
Use the following table when you need to determine the heat
dissipation of your system for installation in an enclosure. For System
Loading, take the value from the appropriate system loading
worksheets on pages F-3, F-5, F-7 or F-8:
Table F.17 Heat Dissipation
Catalog Number
Heat Dissipation
Equation or Constant
Calculation
Sub-Total
1762-L24AWA, -L24AWAR
15.2W + (0.4 x System Loading)
15.2W + (0.4 x ______ W)
W
1762-L24BWA, -L24BWAR
15.7W + (0.4 x System Loading)
15.7W + (0.4 x ______ W)
W
1762-L24BXB, -L24BXBR
17.0W + (0.3 x System Loading)
17.0W + (0.3 x ______ W)
W
1762-L40AWA, -L40AWAR
21.0W + (0.4 x System Loading)
21.0W + (0.4 x ______ W)
W
1762-L40BWA, -L40BWAR
22.0W + (0.4 x System Loading)
22.0W + (0.4 x ______ W)
W
1762-L40BXB, -L40BXBR
27.9W + (0.3 x System Loading)
27.9W + (0.3 x ______ W)
W
1762-IA8
2.0W x number of modules
2.0W x _________
W
1762-IF4
2.0W x number of modules
2.0W x _________
W
1762-IF2OF2
2.6W x number of modules
2.6W x _________
W
1762-IQ8
3.7W x number of modules
3.7W x _________
W
1762-IQ16
5.3W x number of modules
5.3W x _________
W
1762-IR4
1.5W x number of modules
1.5W x _________
W
1762-IT4
1.5W x number of modules
1.5W x _________
W
1762-OA8
2.9W x number of modules
2.9W x _________
W
1762-OB8
1.6W x number of modules
1.6W x _________
W
1762-OB16
2.9W x number of modules
2.9W x _________
W
1762-OW8
2.9W x number of modules
2.9W x _________
W
1762-OW16
5.6W x number of modules
5.6W x _________
W
1762-OX6I
2.8W x number of modules
2.8W x _________
W
1762-OF4
Add Sub-Totals to determine Heat Dissipation
W
Publication 1762-UM001D-EN-P - March 2004
F-10
System Loading and Heat Dissipation
Publication 1762-UM001D-EN-P - March 2004
Glossary
The following terms are used throughout this manual. Refer to the
Allen-Bradley Industrial Automation Glossary, Publication Number
AG-7.1, for a complete guide to Allen-Bradley technical terms.
address
A character string that uniquely identifies a memory location. For
example, I:1/0 is the memory address for the data located in the Input
file location word1, bit 0.
AIC+ Advanced Interface Converter
A device that provides a communication link between various
networked devices. (Catalog Number 1761-NET-AIC.)
application
1) A machine or process monitored and controlled by a controller.
2) The use of computer- or processor-based routines for specific
purposes.
baud rate
The speed of communication between devices. All devices must
communicate at the same baud rate on a network.
bit
The smallest storage location in memory that contains either a 1 (ON)
or a 0 (OFF).
block diagrams
A schematic drawing.
Boolean operators
Logical operators such as AND, OR, NAND, NOR, NOT, and
Exclusive-OR that can be used singularly or in combination to form
logic statements or circuits. Can have an output response of T or F.
branch
A parallel logic path within a rung of a ladder program.
communication scan
A part of the controller’s operating cycle. Communication with other
devices, such as software running on a personal computer, takes
place.
1
Publication 1762-UM001D-EN-P - March 2004
Glossary
2
controller
A device, such as a programmable controller, used to monitor input
devices and control output devices.
controller overhead
An internal portion of the operating cycle used for housekeeping and
set-up purposes.
control profile
The means by which a controller determines which outputs turn on
under what conditions.
counter
1) An electro-mechanical relay-type device that counts the occurrence
of some event. May be pulses developed from operations such as
switch closures or interruptions of light beams.
2) In controllers, a software counter eliminates the need for hardware
counters. The software counter can be given a preset count value to
count up or down whenever the counted event occurs.
CPU (Central Processing Unit)
The decision-making and data storage section of a programmable
controller.
data table
The part of processor memory that contains I/O values and files
where data is monitored, manipulated, and changed for control
purposes.
DIN rail
Manufactured according to Deutsche Industrie Normenausshus (DIN)
standards, a metal railing designed to ease installation and mounting
of your controller.
download
Data is transferred from a programming or storage device to another
device.
DTE (Data Terminal Equipment)
Equipment that is attached to a network to send or receive data, or
both.
Publication 1762-UM001D-EN-P - March 2004
Glossary
3
embedded I/O
Embedded I/O is the controller’s on-board I/O.
EMI
Electromagnetic interference.
encoder
1) A rotary device that transmits position information.
2) A device that transmits a fixed number of pulses for each
revolution.
executing mode
Any run or test mode.
expansion I/O
Expansion I/O is I/O that is connected to the controller via a bus or
cable. MicroLogix 1200 controllers use Bulletin 1762 expansion I/O.
false
The status of an instruction that does not provide a continuous logical
path on a ladder rung.
FIFO (First-In-First-Out)
The order that data is entered into and retrieved from a file.
file
A collection of information organized into one group.
full-duplex
A bidirectional mode of communication where data may be
transmitted and received simultaneously (contrast with half-duplex).
half-duplex
A communication link in which data transmission is limited to one
direction at a time.
hard disk
A storage area in a personal computer that may be used to save
processor files and reports for future use.
Publication 1762-UM001D-EN-P - March 2004
Glossary
4
high byte
Bits 8 to 15 of a word.
input device
A device, such as a push button or a switch, that supplies signals to
the input circuits of the controller.
inrush current
The temporary surge current produced when a device or circuit is
initially energized.
instruction
A mnemonic and data address defining an operation to be performed
by the processor. A rung in a program consists of a set of input and
output instructions. The input instructions are evaluated by the
controller as being true or false. In turn, the controller sets the output
instructions to true or false.
instruction set
The set of general purpose instructions available with a given
controller.
I/O (Inputs and Outputs)
Consists of input and output devices that provide and/or receive data
from the controller.
jump
Change in normal sequence of program execution, by executing an
instruction that alters the program counter (sometimes called a
branch). In ladder programs a JUMP (JMP) instruction causes
execution to jump to a labeled rung.
ladder logic
A program written in a format resembling a ladder-like diagram. The
program is used by a programmable controller to control devices.
least significant bit (LSB)
The digit (or bit) in a binary word (code) that carries the smallest
value of weight.
Publication 1762-UM001D-EN-P - March 2004
Glossary
5
LED (Light Emitting Diode)
Used as status indicator for processor functions and inputs and
outputs.
LIFO (Last-In-First-Out)
The order that data is entered into and retrieved from a file.
low byte
Bits 0 to 7 of a word.
logic
A process of solving complex problems through the repeated use of
simple functions that can be either true or false. General term for
digital circuits and programmed instructions to perform required
decision making and computational functions.
Master Control Relay (MCR)
A mandatory hard-wired relay that can be de-energized by any
series-connected emergency stop switch. Whenever the MCR is
de-energized, its contacts open to de-energize all application I/O
devices.
mnemonic
A simple and easy to remember term that is used to represent a
complex or lengthy set of information.
modem
Modulator/demodulator. Equipment that connects data terminal
equipment to a communication line.
modes
Selected methods of operation. Example: run, test, or program.
negative logic
The use of binary logic in such a way that “0” represents the voltage
level normally associated with logic 1 (for example, 0 = +5V, 1 = 0V).
Positive is more conventional (for example, 1 = +5V, 0 = 0V).
Publication 1762-UM001D-EN-P - March 2004
Glossary
6
network
A series of stations (nodes) connected by some type of
communication medium. A network may be made up of a single link
or multiple links.
nominal input current
The current at nominal input voltage.
normally closed
Contacts on a relay or switch that are closed when the relay is
de-energized or the switch is deactivated; they are open when the
relay is energized or the switch is activated. In ladder programming, a
symbol that allows logic continuity (flow) if the referenced input is
logic “0” when evaluated.
normally open
Contacts on a relay or switch that are open when the relay is
de-energized or the switch is deactivated. (They are closed when the
relay is energized or the switch is activated.) In ladder programming, a
symbol that allows logic continuity (flow) if the referenced input is
logic “1” when evaluated.
off-delay time
The OFF delay time is a measure of the time required for the
controller logic to recognize that a signal has been removed from the
input terminal of the controller. The time is determined by circuit
component delays and by any filter adjustment applied.
offline
Describes devices not under direct communication.
offset
The steady-state deviation of a controlled variable from a fixed point.
off-state leakage current
When an ideal mechanical switch is opened (off-state) no current
flows through the switch. Practical semiconductor switches, and the
transient suppression components which are sometimes used to
protect switches, allow a small current to flow when the switch is in
the off state. This current is referred to as the off-state leakage current.
To ensure reliable operation, the off-state leakage current rating of a
Publication 1762-UM001D-EN-P - March 2004
Glossary
7
switch should be less than the minimum operating current rating of
the load that is connected to the switch.
on-delay time
The ON delay time is a measure of the time required for the controller
logic to recognize that a signal has been presented at the input
terminal of the controller.
one-shot
A programming technique that sets a bit for only one program scan.
online
Describes devices under direct communication. For example, when
RSLogix 500 is monitoring the program file in a controller.
operating voltage
For inputs, the voltage range needed for the input to be in the On
state. For outputs, the allowable range of user-supplied voltage.
output device
A device, such as a pilot light or a motor starter coil, that is controlled
by the controller.
processor
A Central Processing Unit. (See CPU.)
processor file
The set of program and data files used by the controller to control
output devices. Only one processor file may be stored in the
controller at a time.
program file
The area within a processor file that contains the ladder logic
program.
program mode
When the controller is not executing the processor file and all outputs
are de-energized.
Publication 1762-UM001D-EN-P - March 2004
Glossary
8
program scan
A part of the controller’s operating cycle. During the scan the ladder
program is executed and the output data file is updated based on the
program and the input data file.
programming device
Executable programming package used to develop ladder diagrams.
protocol
The packaging of information that is transmitted across a network.
read
To acquire data from a storage place. For example, the processor
READs information from the input data file to solve the ladder
program.
relay
An electrically operated device that mechanically switches electrical
circuits.
relay logic
A representation of the program or other logic in a form normally
used for relays.
restore
To download (transfer) a program from a personal computer to a
controller.
reserved bit
A status file location that the user should not read or write to.
retentive data
Information associated with data files (timers, counters, inputs, and
outputs) in a program that is preserved through power cycles.
RS-232
An EIA standard that specifies electrical, mechanical, and functional
characteristics for serial binary communication circuits. A single-ended
serial communication interface.
Publication 1762-UM001D-EN-P - March 2004
Glossary
9
run mode
This is an executing mode during which the controller scans or
executes the ladder program, monitors input devices, energizes output
devices, and acts on enabled I/O forces.
rung
Ladder logic is comprised of a set of rungs. A rung contains input and
output instructions. During Run mode, the inputs on a rung are
evaluated to be true or false. If a path of true logic exists, the outputs
are made true. If all paths are false, the outputs are made false.
save
To upload (transfer) a program stored in memory from a controller to
a personal computer; OR to save a program to a computer hard disk.
scan time
The time required for the controller to execute the instructions in the
program. The scan time may vary depending on the instructions and
each instruction’s status during the scan.
sinking
A term used to describe current flow between an I/O device and
controller I/O circuit — typically, a sinking device or circuit provides a
path to ground, low, or negative side of power supply.
sourcing
A term used to describe current flow between an I/O device and
controller I/O circuit — typically, a sourcing device or circuit provides
a path to the source, high, or positive side of power supply.
status
The condition of a circuit or system, represented as logic 0 (OFF) or 1
(ON).
terminal
A point on an I/O module that external I/O devices, such as a push
button or pilot light, are wired to.
throughput
The time between when an input turns on and the corresponding
output turns on.
Publication 1762-UM001D-EN-P - March 2004
Glossary
10
true
The status of an instruction that provides a continuous logical path on
a ladder rung.
upload
Data is transferred to a programming or storage device from another
device.
watchdog timer
A timer that monitors a cyclical process and is cleared at the
conclusion of each cycle. If the watchdog runs past its programmed
time period, it causes a fault.
workspace
The main storage available for programs and data and allocated for
working storage.
write
To copy data to a storage device. For example, the processor WRITEs
the information from the output data file to the output modules.
Publication 1762-UM001D-EN-P - March 2004
Index
Numerics
1762-24AWA wiring diagram 3-11
1762-40BWA sourcing wiring diagram
3-15
1762-IA8 wiring diagram 3-18
1762-IF2OF2
input type selection 3-23
output type selection 3-23
terminal block layout 3-24
wiring 3-24
1762-IF4
input type selection 3-25
terminal block layout 3-26
1762-IQ16 wiring diagram 3-19
1762-IQ8 wiring diagram 3-18
1762-OA8 wiring diagram 3-19
1762-OB16 wiring diagram 3-20
1762-OB8 wiring diagram 3-20
1762-OW16 wiring diagram 3-21
1762-OW8 wiring diagram 3-21
1762-OX6I wiring diagram 3-22
A
address G-1
Advanced Interface Converter. See AIC+
agency certifications 2-1
AIC+
applying power to 4-18
attaching to the network 4-18
connecting 4-12
isolated modem 4-6
definition G-1
installing 4-18
modem connections 4-6
recommended user supplied components
4-16
safety consideration 4-17
selecting cable 4-15
analog expansion I/O C-4
diagnostics C-4
module operation vs. channel operation
C-4
power-up diagnostics C-4
system wiring guidelines 3-22
troubleshooting C-4
application G-1
B
battery 6-2
baud rate G-1
bit G-1
block diagrams G-1
Boolean operators G-1
branch G-1
C
cables
planning routes for DH485 connections
E-7
selection guide for the AIC+ 4-15
selection guide for the DeviceNet
network 4-20
calling for assistance C-8
CE mark 2-1, 2-2
common mode rejection ratio
specification A-16
common techniques used in this manual
P-2
communication
DeviceNet 4-20
communication connections 4-1
communication options 1-6
communication protocols
DF1 Full-Duplex E-1
DF1 Half-Duplex E-2
DH485 E-5
Modbus E-12
communication scan G-1
communications toggle push button
using 4-2
component descriptions 1-2
1762 expansion I/O 1-3
communication cables 1-4
memory module 1-2
real-time clock 1-2
configuration errors C-6
connecting expansion I/O 2-19
connecting the system
AIC+ 4-12, 4-17
DeviceNet network 4-20
DF1 Full-Duplex protocol 4-4
DF1 isolated point-to-point connection
4-5
DH485 network 4-9
connecting to DF1 Half-Duplex network
4-8
contactors (bulletin 100), surge
suppressors for 3-5
control profile G-2
ControlFlash
missing/corrupt OS LED pattern D-2
Publication 1762-UM001D-EN-P - March 2004
2
Index
sequence of operation D-2
using D-1
controller G-2
grounding 3-5
I/O wiring 3-17
installation 2-1
LED status C-1
LED status error conditions C-2
LED status normal operation C-2
minimizing electrical noise 3-17
mounting 2-14
mounting dimensions 2-13
mounting on DIN rail 2-15
mounting on panel 2-16
preventing excessive heat 2-7
controller overhead G-2
controller spacing 2-13
counter G-2
CPU (Central Processing Unit) G-2
D
data table G-2
default communication configuration
4-2
DeviceNet Communications 4-20
DeviceNet network
connecting 4-20
selecting cable 4-20
DF1 Full-Duplex protocol
connecting 4-4, 4-5
description E-1
example system configuration E-2
using a modem 4-5, E-3
DF1 Half-Duplex protocol
description E-2
DH485 network
configuration parameters E-8
connecting 4-9
devices that use the network E-5
example system configuration E-9
installation 4-9
planning considerations E-6
DIN rail G-2
disconnecting main power 2-4
download G-2
DTE (Data Terminal Equipment) G-2
E
Electronics Industries Association (EIA)
E-1
Publication 1762-UM001D-EN-P - March 2004
EMC Directive 2-2
EMI G-3
encoder G-3
error recovery model C-3
errors
configuration C-6
critical C-5
extended error information field C-6
hardware C-6
module error field C-6
non-critical C-5
European Union Directive compliance
2-1
EMC Directive 2-2
low voltage directive 2-2
executing mode G-3
expansion I/O
1762-IF2OF2 input type selection 3-23
1762-IF2OF2 output type selection 3-23
expansion I/O mounting 2-17, 2-18
mounting on DIN rail 2-17
expansion I/O wiring 3-17
1762-IA8 wiring diagram 3-18
1762-IF2OF2 wiring 3-24
1762-IF4 terminal block layout 3-26
1762-IQ16 wiring diagram 3-19
1762-IQ8 wiring diagram 3-18
1762-OA8 wiring diagram 3-19
1762-OB16 wiring diagram 3-20
1762-OB8 wiring diagram 3-20
1762-OW16 wiring diagram 3-21
1762-OW8 wiring diagram 3-21
1762-OX6I wiring diagram 3-22
analog wiring guidelines 3-22
extended error information field C-6
F
false G-3
FIFO (First-In-First-Out) G-3
file G-3
Full-Duplex 4-5
full-duplex G-3
G
general considerations 2-2
grounding the controller 3-5
H
Half-Duplex 4-8, G-3
Index
hard disk G-3
hardware errors C-6
hardware features 1-1
heat dissipation
calculating F-9
heat protection 2-7
high byte G-4
I
I/O (Inputs and Outputs) G-4
input device G-4
input states on power down 2-7
inrush current G-4
installing
ControlFlash software D-1
memory module 2-12
your controller 2-1
installing real-time clock 2-12
instruction G-4
instruction set G-4
isolated link coupler
installing 4-9
isolation transformers
power considerations 2-5
J
jump G-4
L
3
data file protection 6-4
operation 6-3
program compare 6-4
program/data backup 6-3
removal/installation under power 6-4
write protection 6-4
minimizing electrical noise 3-17
mnemonic G-5
Modbus communication protocol E-12
modem G-5
modem cable
constructing your own 4-7
modems
using with MicroLogix controllers E-3
modes G-5
module error field C-6
motor starters (bulletin 509)
surge suppressors 3-5
motor starters (bulletin 709)
surge suppressors 3-5
N
negative logic G-5
network G-6
nominal input current G-6
normally closed G-6
normally open G-6
null modem cable 4-7
O
ladder logic G-4
least significant bit (LSB) G-4
LED (Light Emitting Diode) G-5
LIFO (Last-In-First-Out) G-5
logic G-5
low byte G-5
offline G-6
offset G-6
off-state leakage current G-6
one-shot G-7
online G-7
operating voltage G-7
output device G-7
M
manuals
related P-2
master control relay 2-8
emergency-stop switches 2-9
using ANSI/CSA symbols schematic
2-11
using IEC symbols schematic 2-10
Master Control Relay (MCR) G-5
master control relay circuit
periodic tests 2-5
memory module
P
planning considerations for a network
E-6
power considerations
input states on power down 2-7
isolation transformers 2-5
loss of power source 2-6
other line conditions 2-7
overview 2-5
power supply inrush 2-6
power distribution 2-5
Publication 1762-UM001D-EN-P - March 2004
4
Index
power source
loss of 2-6
power supply inrush
power considerations 2-6
preparing for upgrade D-1
preventing excessive heat 2-7
processor G-7
processor file G-7
program file G-7
program mode G-7
program scan G-8
programming 1-4
programming device G-8
protocol G-8
publications
related P-2
purpose of this manual P-1
R
read G-8
real-time clock
battery operation 6-2
disabling 6-2
operation 6-1
removal/installation under power 6-1
writing data 6-2
related documentation P-2
related publications P-2
relay G-8
relay logic G-8
relays
surge suppressors for 3-5
remote packet support E-10
replacement parts B-1
reserved bit G-8
restore G-8
retentive data G-8
RS-232 G-8
RS-232 communication interface E-1
run mode G-9
rung G-9
S
safety circuits 2-4
safety considerations 2-3
disconnecting main power 2-4
hazardous location 2-3
master control relay circuit
periodic tests 2-5
Publication 1762-UM001D-EN-P - March 2004
periodic tests of master control relay
circuit 2-5
power distribution 2-5
safety circuits 2-4
save G-9
scan time G-9
sinking G-9
sinking and sourcing wiring diagrams
3-10
sinking wiring diagram
1762-24BWA 3-12
sourcing G-9
sourcing wiring diagram
1762-24BWA 3-12
specifications A-1
status G-9
surge suppressors
for contactor 3-5
for motor starters 3-5
for relays 3-5
recommended 3-5
using 3-3
system configuration
DF1 Full-Duplex examples E-2
DH485 connection examples E-9
system loading
example calculations F-1
limitations F-1
worksheet F-3
system loading and heat dissipation F-1
T
terminal G-9
terminal block layouts
1762-IF2OF2 3-24
1762-IF4 3-26
controllers 3-7
terminal groupings 3-9
terminal groupings 3-9
throughput G-9
Trim Pot Information Function File 5-2
trim pot operation 5-1
trim pots 5-1
adjustment 5-1
error conditions 5-2
location 5-1
troubleshooting C-1
true G-10
U
Index
upload G-10
using communications toggle push
button 4-2
using emergency-stop switches 2-9
using memory modules 6-1
using real-time clock 6-1
using trim pots 5-1
W
wiring diagram
1762-IA8 3-18
1762-IF2OF2 differential sensor 3-24
1762-IF2OF2 single-ended sensor 3-25
1762-IQ16 3-19
1762-IQ8 3-18
1762-L24AWA input 3-11
1762-L24AWA output 3-14
1762-L24BWA output 3-14
1762-L24BWA sinking 3-12
1762-L24BWA sourcing 3-12
1762-L24BXB output 3-14
5
1762-L24BXB sinking 3-13
1762-L24BXB sourcing 3-13
1762-L40AWA input 3-15
1762-L40AWA output 3-16
1762-L40BWA output 3-16
1762-L40BWA sourcing 3-15
1762-L40BXB output 3-17
1762-L40BXB sinking 3-16
1762-L40BXB sourcing 3-16
1762-OA8 3-19
1762-OB16 3-20
1762-OB8 3-20
1762-OW16 3-21
1762-OW8 3-21
1762-OX6I 3-22
terminal block layouts 3-7, 3-24, 3-26
wiring diagrams 3-7
wiring recommendation 3-1
wiring your controller 3-1
workspace G-10
write G-10
Publication 1762-UM001D-EN-P - March 2004
6
Index
Publication 1762-UM001D-EN-P - March 2004
Rockwell Automation
Support
Rockwell Automation provides technical information on the web to assist you
in using our products. At http://support.rockwellautomation.com, you can
find technical manuals, a knowledge base of FAQs, technical and application
notes, sample code and links to software service packs, and a MySupport
feature that you can customize to make the best use of these tools.
For an additional level of technical phone support for installation,
configuration and troubleshooting, we offer TechConnect Support programs.
For more information, contact your local distributor or Rockwell Automation
representative, or visit http://support.rockwellautomation.com.
Installation Assistance
If you experience a problem with a hardware module within the first 24
hours of installation, please review the information that's contained in this
manual. You can also contact a special Customer Support number for initial
help in getting your module up and running:
United States
1.440.646.3223
Monday – Friday, 8am – 5pm EST
Outside United
States
Please contact your local Rockwell Automation representative for any
technical support issues.
New Product Satisfaction Return
Rockwell tests all of our products to ensure that they are fully operational
when shipped from the manufacturing facility. However, if your product is
not functioning and needs to be returned:
United States
Contact your distributor. You must provide a Customer Support case
number (see phone number above to obtain one) to your distributor in
order to complete the return process.
Outside United
States
Please contact your local Rockwell Automation representative for
return procedure.
PLC-5 is a registered trademark; and MicroLogix, SLC 500, RSLogix, and RSLinx are trademarks of Rockwell
Automation.
Modbus is a trademark of SChneider Electric Incorporated.
DeviceNet is a trademark of Open DeviceNet Vendor Association (ODVA).
Belden is a trademark of Belden Incorporated.
Publication 1762-UM001D-EN-P - March 2004 9
Supersedes Publication 1762-UM001C-EN-P - January 2004
PN 40072-078-01(4)
Copyright © 2004 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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