Rockwell Automation Allen-Bradley MicroLogix 1400 User manual

MicroLogix 1400
Programmable
Controllers
Bulletin1766Controllersand1762
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://literature.rockwellautomation.com) 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, when necessary, we use notes to make you aware
of safety considerations.
Rockwell Automation, Allen-Bradley, SLC 5/02, SLC 5/03, PLC-5, MicroLogix, SLC 500, RSLogix, RSLinx, RSLogix 500, RSLogix
Micro, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
WARNING 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.
IMPORTANT Identifies information that is critical for successful application and
understanding of the product.
ATTENTION 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, and recognize
the consequence.
SHOCK HAZARD Labels may be on or inside the equipment, such as a drive or motor, to
alert people that dangerous voltage may be present.
BURN HAZARD Labels may be on or inside the equipment, such as a drive or motor, to
alert people that surfaces may reach dangerous temperatures.

3Publication 1766-UM001A-EN-P - October 2008
Table of Contents
Preface
Who Should Use this Manual. . . . . . . . . . . . . . . . . . . . . . . . 11
Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . 12
Common Techniques Used in this Manual . . . . . . . . . . . . . . 12
Chapter 1
Hardware Overview
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Component Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
MicroLogix 1400 Memory Module and Built-in Real-Time
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Communication Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 2
Installing Your Controller
Agency Certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Compliance to European Union Directives . . . . . . . . . . . . . . 19
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installation Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . 20
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Hazardous Location Considerations . . . . . . . . . . . . . . . . 22
Disconnecting Main Power. . . . . . . . . . . . . . . . . . . . . . . 23
Safety Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Power Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Periodic Tests of Master Control Relay Circuit . . . . . . . . . 24
Power Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Isolation Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Supply Inrush . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Loss of Power Source. . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Input States on Power Down . . . . . . . . . . . . . . . . . . . . . 25
Other Types of Line Conditions . . . . . . . . . . . . . . . . . . . 25
Preventing Excessive Heat. . . . . . . . . . . . . . . . . . . . . . . . . . 26
Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Using Emergency-Stop Switches . . . . . . . . . . . . . . . . . . . 28
Schematic (Using IEC Symbols) . . . . . . . . . . . . . . . . . . . 29
Schematic (Using ANSI/CSA Symbols). . . . . . . . . . . . . . . 30
Installing a Memory Module . . . . . . . . . . . . . . . . . . . . . . . . 31
Using the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Connecting the Battery Wire Connector . . . . . . . . . . . . . 33
Controller Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . 34
Controller and Expansion I/O Spacing . . . . . . . . . . . . . . . . . 34
Mounting the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
DIN Rail Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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4Table of Contents
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
1762 Expansion I/O Dimensions . . . . . . . . . . . . . . . . . . . . . 38
Mounting 1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . 38
DIN Rail Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Connecting Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . 40
Chapter 3
Wiring Your Controller
Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Wiring Recommendation . . . . . . . . . . . . . . . . . . . . . . . . 41
Wire without Spade Lugs . . . . . . . . . . . . . . . . . . . . . . . . 42
Wire with Spade Lugs . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Using Surge Suppressors . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Recommended Surge Suppressors . . . . . . . . . . . . . . . . . 45
Grounding the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Terminal Block Layouts . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sinking and Sourcing Wiring Diagrams . . . . . . . . . . . . . . . . 48
1766-L32BWA, 1766-L32AWA, 1766-L32BXB, 1766-L32BWAA,
1766-L32AWAA, 1766-L32BXBA Wiring Diagrams . . . . . . 49
Controller I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Minimizing Electrical Noise. . . . . . . . . . . . . . . . . . . . . . . 51
Wiring Your Analog Channels . . . . . . . . . . . . . . . . . . . . . . . 51
Analog Channel Wiring Guidelines . . . . . . . . . . . . . . . . . 52
Minimizing Electrical Noise on Analog Channels . . . . . . . 53
Grounding Your Analog Cable . . . . . . . . . . . . . . . . . . . . 53
Expansion I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Digital Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 55
Analog Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Chapter 4
Communication Connections
Supported Communication Protocols . . . . . . . . . . . . . . . . . . 67
Default Communication Configuration . . . . . . . . . . . . . . . . . 68
Using the Communications Toggle Functionality . . . . . . . . . 68
Changing Communication Configuration. . . . . . . . . . . . . 69
Connecting to the RS-232 Port . . . . . . . . . . . . . . . . . . . . . . . 72
Making a DF1 Point-to-Point Connection . . . . . . . . . . . . 72
Using a Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Connecting to a DF1 Half-Duplex Network. . . . . . . . . . . 76
Connecting to a RS-485 Network . . . . . . . . . . . . . . . . . . . . . 79
DH-485 Configuration Parameters. . . . . . . . . . . . . . . . . . 79
Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
DH-485 Communication Cable . . . . . . . . . . . . . . . . . . . . 81

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Table of Contents 5
Connecting the Communication Cable to the DH-485
Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Grounding and Terminating the DH-485 Network . . . . . . 83
Connecting the AIC+. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Cable Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Recommended User-Supplied Components. . . . . . . . . . . 88
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Install and Attach the AIC+. . . . . . . . . . . . . . . . . . . . . . . 90
Powering the AIC+. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Connecting to DeviceNet. . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Cable Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Connecting to Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Ethernet Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Chapter 5
Using the LCD
Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Startup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Main Menu and Default Screen. . . . . . . . . . . . . . . . . . . 100
Operating Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Using Menus to Choose Values. . . . . . . . . . . . . . . . . . . 102
Selecting Between Menu Items . . . . . . . . . . . . . . . . . . . 103
Cursor Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Setting Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
I/O Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Viewing I/O Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Monitor User Defined Target Files . . . . . . . . . . . . . . . . . . . 107
Target User Defined File Number (TUF) . . . . . . . . . . . . 107
Monitoring a Bit File . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Monitoring Integer Files . . . . . . . . . . . . . . . . . . . . . . . . 112
Monitoring Double Integer files . . . . . . . . . . . . . . . . . . 119
Monitor Floating point Files . . . . . . . . . . . . . . . . . . . . . 124
Monitor System Status Files . . . . . . . . . . . . . . . . . . . . . 125
Using the Mode Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Controller Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Changing Mode Switch Position . . . . . . . . . . . . . . . . . . 127
Using a User Defined LCD Screen . . . . . . . . . . . . . . . . . . . 128
User Defined LCD Screen. . . . . . . . . . . . . . . . . . . . . . . 129
Configuring Advanced Settings . . . . . . . . . . . . . . . . . . . . . 131
Changing Key In Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Key In Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Changing Key In Mode . . . . . . . . . . . . . . . . . . . . . . . . 132
Using Communications Toggle Functionality . . . . . . . . . . . 133
Ethernet Network Configuration . . . . . . . . . . . . . . . . . . . . 134
Viewing Ethernet Status . . . . . . . . . . . . . . . . . . . . . . . . 134
Configuring the IP Address. . . . . . . . . . . . . . . . . . . . . . 135

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6Table of Contents
Configuring the Ethernet Port . . . . . . . . . . . . . . . . . . . . 139
Configuring Ethernet Protocol Setup . . . . . . . . . . . . . . . 142
Using Trim Pots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Trim Pot Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Changing Data Value of a Trim Pot. . . . . . . . . . . . . . . . 145
Trim Pot Configuration in LCD Function File. . . . . . . . . 147
Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Viewing System Information . . . . . . . . . . . . . . . . . . . . . . . 148
Viewing Fault Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Saving/Loading Communication EEPROM . . . . . . . . . . . . . 151
Saving communication EEPROM. . . . . . . . . . . . . . . . . . 151
Loading communication EEPROM. . . . . . . . . . . . . . . . . 152
LCD setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Configuring contrast value . . . . . . . . . . . . . . . . . . . . . . 154
Configuring the backlight . . . . . . . . . . . . . . . . . . . . . . . 155
Chapter 6
Using Real-Time Clock and
Memory Modules
Real-Time Clock Operation . . . . . . . . . . . . . . . . . . . . . . . . 159
Operation at Power-up and Entering a Run or Test Mode . .
159
Writing Data to the Real-Time Clock. . . . . . . . . . . . . . . 160
RTC Battery Operation . . . . . . . . . . . . . . . . . . . . . . . . . 160
Memory Module Operation . . . . . . . . . . . . . . . . . . . . . . . . 161
User Program , User Data, Datalog and Recipe Back-up 161
Program Compare . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Data File Download Protection. . . . . . . . . . . . . . . . . . . 162
Memory Module Write Protection . . . . . . . . . . . . . . . . . 162
Removal/Insertion Under Power. . . . . . . . . . . . . . . . . . 162
Memory Module Information File . . . . . . . . . . . . . . . . . 162
Program /Data Download . . . . . . . . . . . . . . . . . . . . . . 163
Program /Data Upload . . . . . . . . . . . . . . . . . . . . . . . . . 163
Chapter 7
Online Editing
Directions and Cautions for MicroLogix 1400 Online
Editing User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
A Download is Required Before Starting Online Editing. 165
Types of Online Editing . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Edit Functions in Runtime Online Editing . . . . . . . . . . . 167
Edit Functions in Program Online Editing . . . . . . . . . . . 167
Appendix A
Specifications
Specifications for Inputs . . . . . . . . . . . . . . . . . . . . . . 169
Specifications for Outputs in Hazardous Locations
(Class 1, Division 2, Groups A, B, C, D) . . . . . . . . . . . . 171

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Table of Contents 7
SpecificationsforOutputsin(Non-Hazardous)Locationsonly
172
Working Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Expansion I/O Specifications . . . . . . . . . . . . . . . . . . . . . . . 177
Digital I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
-Appendix B
Replacement Parts
MicroLogix 1400 Replacement Kits. . . . . . . . . . . . . . . . . . . 193
Lithium Battery (1747-BA) . . . . . . . . . . . . . . . . . . . . . . . . 194
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Battery Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
1762 Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Expansion I/O Replacement Doors. . . . . . . . . . . . . . . . 198
Expansion I/O Replacement DIN Latches . . . . . . . . . . . 198
Expansion I/O Replacement Door Labels . . . . . . . . . . . 198
Appendix C
Troubleshooting Your System
Understanding the Controller Status Indicators . . . . . . . . . . 199
Controller Status LED Indicators . . . . . . . . . . . . . . . . . . 199
Status Indicators on the LCD . . . . . . . . . . . . . . . . . . . . 200
I/O Status Indicators on the LCD . . . . . . . . . . . . . . . . . 201
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Controller Error Recovery Model . . . . . . . . . . . . . . . . . . . . 203
Analog Expansion I/O Diagnostics and Troubleshooting. . . 204
Module Operation and Channel Operation . . . . . . . . . . 204
Power-up Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . 204
Critical and Non-Critical Errors . . . . . . . . . . . . . . . . . . . 205
Module Error Definition Table . . . . . . . . . . . . . . . . . . . 205
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Calling Rockwell Automation for Assistance . . . . . . . . . . . . 208
Appendix D
Using ControlFlash to Upgrade
Your Operating System
Preparing for Firmware Upgrade . . . . . . . . . . . . . . . . . . . . 209
Install ControlFlash Software . . . . . . . . . . . . . . . . . . . . 209
Prepare the Controller for Firmware Upgrade . . . . . . . . 210
Using ControlFlash for Firmware Upgrade . . . . . . . . . . . . . 211
ControlFlash Error Messages . . . . . . . . . . . . . . . . . . . . . . . 221
Missing or Corrupt OS state . . . . . . . . . . . . . . . . . . . . . . . . 223
Recovering from Missing or Corrupt OS State . . . . . . . . 224

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8Table of Contents
Appendix E
Connecting to Networks via
RS-232/RS-485 Interface
RS-232 Communication Interface . . . . . . . . . . . . . . . . . . . . 225
RS-485 Communication Interface . . . . . . . . . . . . . . . . . . . . 225
DF1 Full-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 225
DF1 Half-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 226
DF1 Half-Duplex Operation . . . . . . . . . . . . . . . . . . . . . 227
Considerations When Communicating as a DF1 Slave
on a Multi-drop Link . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Using Modems with MicroLogix Programmable Controllers .
229
DH-485 Communication Protocol. . . . . . . . . . . . . . . . . . . . 231
DH-485 Configuration Parameters. . . . . . . . . . . . . . . . . 231
Devices that use the DH-485 Network . . . . . . . . . . . . . 232
Important DH-485 Network Planning Considerations. . . 232
Example DH-485 Connections . . . . . . . . . . . . . . . . . . . 237
Modbus Communication Protocol . . . . . . . . . . . . . . . . . . . 239
ASCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Distributed Network Protocol (DNP3) . . . . . . . . . . . . . . . . 239
Appendix F
Micrologix 1400 Distributed
Network Protocol (DNP3)
Channel Configuration for DNP3 Slave. . . . . . . . . . . . . . . . 241
Channel 0 and Channel 2 Link Layer Configuration
Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
DNP3 Slave Application Layer Configuration Parameters 248
DNP3 Slave Application Layer . . . . . . . . . . . . . . . . . . . . . . 254
Function Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Internal Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
DNP3 Objects and MicroLogix 1400 Data Files . . . . . . . . . . 259
DNP3 Binary Input Object . . . . . . . . . . . . . . . . . . . . . . 264
DNP3 Binary Output Object . . . . . . . . . . . . . . . . . . . . . 266
DNP3 Double Bit Binary Input Object . . . . . . . . . . . . . 270
DNP3 Counter Object. . . . . . . . . . . . . . . . . . . . . . . . . . 272
DNP3 Frozen Counter Object . . . . . . . . . . . . . . . . . . . . 275
DNP3 Analog Input Object. . . . . . . . . . . . . . . . . . . . . . 278
DNP3 Analog Output Object . . . . . . . . . . . . . . . . . . . . 282
DNP3 BCD Object . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Object Quality Flags. . . . . . . . . . . . . . . . . . . . . . . . . . . 286
DNP3 Device Attribute Object . . . . . . . . . . . . . . . . . . . . . . 288
Event Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Generating Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Control Generating Event . . . . . . . . . . . . . . . . . . . . . . . 300
Reporting Event By Polled Response . . . . . . . . . . . . . . 302
Reporting Event By Unsolicited Response . . . . . . . . . . . 303
Collision Avoidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Time Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306

Publication 1766-UM001A-EN-P - October 2008
Table of Contents 9
Download a User Program via DNP3 Network . . . . . . . . . . 307
Default Directories and Files. . . . . . . . . . . . . . . . . . . . . 308
Generating *.IMG file using RSLogix 500/RSLogix Micro. 308
Rules for File Authentication. . . . . . . . . . . . . . . . . . . . . 310
Rules for Downloading a User Program . . . . . . . . . . . . 311
Rules for Uploading a User Program. . . . . . . . . . . . . . . 312
Rules for Initializing a User Program. . . . . . . . . . . . . . . 313
Rules for uploading Communication Status Files . . . . . . 313
Starting and Stopping User Programs (Mode Change) via
DNP3 Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Initialize User Program. . . . . . . . . . . . . . . . . . . . . . . . . 314
Start User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Stop User Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Function Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Implementation Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Appendix G
Connecting to Networks via
Ethernet Interface
MicroLogix 1400 Controllers and Ethernet Communication . 331
MicroLogix 1400 Performance Considerations. . . . . . . . . . . 332
MicroLogix 1400 and PC Connections to the
Ethernet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Ethernet Network Topology . . . . . . . . . . . . . . . . . . . . . 333
Connecting an Ethernet switch on the Ethernet Network 333
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Ethernet Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Duplicate IP address Detection. . . . . . . . . . . . . . . . . . . . . 337
Configuring the Ethernet Channel on the MicroLogix 1400 . 338
Configuration Using RSLogix 500/RSLogix Micro Programming
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Configuration Via BOOTP . . . . . . . . . . . . . . . . . . . . . . . . . 340
Using the Rockwell BOOTP/DHCP Utility. . . . . . . . . . . 341
Using a DHCP Server To Configure Your Processor . . . . . . 343
Using Subnet Masks and Gateways . . . . . . . . . . . . . . . . . . 344
Manually Configuring Channel 1 for Controllers on
Subnets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
MicroLogix 1400 Embedded Web Server Capability . . . . . . 346
Appendix H
System Loading and Heat
Dissipation
System Loading Calculations. . . . . . . . . . . . . . . . . . . . . . . 347
System Loading Example Calculations . . . . . . . . . . . . . 348
System Loading Worksheet . . . . . . . . . . . . . . . . . . . . . . . . 350
Current Loading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Calculating Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . 352

Publication 1766-UM001A-EN-P - October 2008
10 Table of Contents
Glossary
Index

11 Publication 1766-UM001A-EN-P - October 2008
Preface
Read this preface to familiarize yourself with the rest of the manual. It
provides information concerning:
•who should use this manual
•the purpose of this manual
•related documentation
•conventions used in this manual
•Rockwell Automation support
Who Should Use this
Manual
Use this manual if you are responsible for designing, installing,
programming, or troubleshooting control systems that use MicroLogix
1400 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 1400 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 1400 controller system
Refer to publication 1766-RM001, MicroLogix 1400 Programmable
Controllers Instruction Set Reference Manual for the MicroLogix 1400
instruction set and for application examples to show the instruction
set in use. Refer to your RSLogix 500/RSLogix Micro programming
software user documentation for more information on programming
your MicroLogix 1400 controller.

12
Related Documentation
The following documents contain additional information concerning
Rockwell Automation products. To obtain a copy, contact your local
Rockwell Automation office or distributor.
Common Techniques Used
in this Manual
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.
Resource Description
MicroMentor: Understanding and Applying Micro
Programmable Controllers 1761-MMB Information on understanding and applying micro controllers.
MicroLogix 1400 Programmable Controllers Instruction
Set Reference Manual 1766-RM001 Information on the MicroLogix 1400 Controllers instruction set.
MicroLogix 1400 Programmable Controllers Installation
Instructions 1766 -IN001 Information on mounting and wiring the MicroLogix 1400 Controllers, including
a mounting template for easy installation.
Advanced Interface Converter (AIC+) User Manual
1761-UM004 A description on how to install and connect an AIC+. This manual also
contains information on network wiring.
DeviceNet Interface User Manual 1761-UM005 Information on how to install, configure, and commission a DNI.
DF1 Protocol and Command Set Reference Manua
1770-6.5.16 Information on DF1 open protocol.
Modbus Protocol Specifications Available from
www.modbus.org Information about the Modbus protocol.
Distributed Network Protocol(DNP3) Specifications
Available from www.dnp.org Information about the Distributed Network Protocol.
Allen-Bradley Programmable Controller Grounding and
Wiring Guidelines 1770-4.1 In-depth information on grounding and wiring Allen-Bradley programmable
controllers.
Application Considerations for Solid-State Controls
SGI-1.1 A description of important differences between solid-state programmable
controller products and hard-wired electromechanical devices.
National Electrical Code - Published by the National Fire
Protection Association of Boston, MA. An article on wire sizes and types for grounding electrical equipment.
Allen-Bradley Publication Index SD499 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 Industrial Automation Glossary AG-7.1 A glossary of industrial automation terms and abbreviations.

13 Publication 1766-UM001A-EN-P - October 2008
Chapter 1
Hardware Overview
Hardware Features
combination RS-232/485 communication port, an Ethernet port, and a
non-isolated RS-232 communication port. Each controller supports 32
discrete I/O points(20 digital inputs, 12 discrete outputs) and 6 analog
I/O points(4 analog inputs and 2 analog outputs : 1766-L32BWAA,
-AWAA and -BXBA only).
The hardware features of the controller are shown below.
Hardware Features
Description
Comm port 2 - 9-pin D-Shell RS-232C connector
2 Memory module (refer to MicroLogix 1400 Memory Module Installation Instructions, publication 1766-IN010A for instructions on
installing the memory module).
3 User 24V (for 1766-BWA and 1766-BWAA only)
4 Input terminal block
5 LCD Display Keypad (ESC, OK, Up, Down, Left, Right)
6 Battery compartment
7 1762 expansion bus connector
8 Battery connector
9 Output terminal block
1
ESC
OK
256 7
8
9101113 12
43
1
4451544514
Left side view Top view

Publication 1766-UM001A-EN-P - October 2008
Hardware Overview
Component Descriptions MicroLogix 1400 Memory Module and Built-in Real-Time Clock
Comm port 1 - RJ45 connector
13 Comm port 0 - 8-pin mini DIN RS-232C/RS-485 connector
Controller Input and Output Description
Catalog Number Description
Input
Power User Power Embedded Discrete I/O Embedded Analog I/O Comm. Ports
(1)
1 Ethernet
1 RS232(2)
1766-L32AWA None 20 120VAC Inputs
12 Relay Outputs
1766-L32BXB 24 V DC 12 Fast 24VDC Inputs
8 Normal 24VDC Inputs
6 Relay Outputs
3 Fast DC Outputs
3 Normal DC Outputs
1766-L32BWAA 100/240 V AC 24V DC 12 Fast 24VDC Inputs
8 Normal 24VDC Inputs
12 Relay Outputs
4 Voltage
Inputs
2 Voltage
Outputs
1766-L32AWAA None 20 120VAC Inputs
12 Relay Outputs
1766-L32BXBA 24 V DC 12 Fast 24VDC Inputs
8 Normal 24VDC Inputs
6 Relay Outputs
3 Fast DC Outputs
3 Normal DC Outputs
(1) Isolated RS-232/RS-485 combo port. Same as ML1100 Comm 0
(2) Non-isolated RS-232. Standard D-sub connector

1766-MM1 Memory Module
1762 Expansion I/O
1762 Expansion I/O
TIP any
Appendix H to determine how much
heat a certain combination generates.
Mod
ule
M
em
ory
44536
1762 Expansion I/O 1762 Expansion I/O Connected to MicroLogix 1400 Controller
4456344581

Publication 1766-UM001A-EN-P - October 2008
Hardware Overview
Communication Cables
These cables are required for Class I Div. 2
applications.
•1761-CBL-AM00 Series C or later
•1761-CBL-AP00 Series C or later
•1761-CBL-PM02 Series C or later
•1761-CBL-HM02 Series C or later
•2707-NC9 Series C or later
•1763-NC01 Series A or later
•1747-CP3 Series A or later
1762-IQ8 8-Point Sink/Source 24V DC Input Module
1762-IQ16 16-Point Sink/Source 24V DC Input Module
1762-OA8 8-Point 120/240V AC Triac Output Module
1762-OB8 8-Point Sourcing 24V DC Output Module
1762-OB16 16-Point Sourcing 24V DC Output Module
1762-OW8 8-Point AC/DC Relay Output Module
1762-OW16 16-Point AC/DC Relay Output Module
1762-OX6I 6-Point Isolated AC/DC Relay Output Module
1762-IQ8OW6 8-Point Sink/Source 24V DC Input and 6-Point AC/DC Relay
Output Module
Analog
1762-IF4 4-Channel Voltage/Current Analog Input Module
1762-OF4 4-Channel Voltage/Current Analog Output Module
1762-IF2OF2 Combination 2-Channel Input 2-Channel Output
Voltage/Current Analog Module
Temperature
1762-IR4 4-Channel RTD/Resistance Input Module
1762-IT4 4-Channel Thermocouple/mV Input Module

17
Programming
Communication Options
•operator interfaces, personal computers, etc. using DF1 Full
Duplex point-to-point
•a DH-485 network
•a DF1 Radio Modem network
•a DF1 half-duplex network as an RTU Master or RTU Slave
•a Modbus network as an RTU Master or RTU Slave
•an ASCII network
•a DeviceNet network as a slave or peer using a DeviceNet
Interface (catalog number 1761-NET-DNI)
•an Ethernet network using the Ethernet Interface module
(catalog number 1761-NET-ENI, or 1761-NET-ENIW)
•a DNP3 Network as a Slave
When connecting to RS-485 network using DH-485, DF1 Half-Duplex
Master/Slave, Modbus RTU Master/Slave or DNP3 Slave protocols, the
MicroLogix 1400 can be connected directly via Channel 0 without an
Advanced Interface Converter, catalog number 1761-NET-AIC. The
ATTENTION

18
Channel 0 combo port provides both RS-232 and RS-485 isolated
connections. The appropriate electrical interface is selected through
your choice of communication cable. The existing MicroLogix 1761
communication cables provide an interface to the RS-232 drivers. The
1763-NC01 cable provides an interface to the RS-485 drivers.
The controller may also be connected to serial devices, such as bar
code readers, weigh scales, serial printers, and other intelligent
devices, using ASCII. See Default Communication Configuration on
page 68 for the configuration settings for Channel 0. MicroLogix 1400
can be connected directly to RS-485 network via channel 0, using
ASCII.
The MicroLogix 1400 supports Ethernet communication via the
Ethernet communication Channel 1. You can connect your controller
to a local area network that provides communication between various
devices at 10 Mbps or 100 Mbps. This port supports CIP explicit
messaging (message exchange) only. The controller cannot be used
for CIP implicit messaging (real-time I/O messaging). The controller
also includes an embedded web server which allows viewing of not
only module information, TCP/IP configuration, and diagnostic
information, but also includes the data table memory map and data
table monitor screen using a standard web browser.
See Chapter 4 for more information on connecting to the available
communication options.

19 Publication 1766-UM001A-EN-P - October 2008
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
•installation considerations
•safety considerations
•power considerations
•preventing excessive heat
•master control relay
•installing a memory module
•using the battery
•controller mounting dimensions
•controller and expansion I/O spacing
•mounting the controller
•mounting 1762 expansion I/O
•connecting 1762 expansion I/O
Agency Certifications
•UL Listed Industrial Control Equipment for use in Class I,
Division 2, Hazardous Locations, Groups A, B, C, D
•CE marked for all applicable directives
•C-Tick marked for all applicable acts
Compliance to European
Union Directives
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 1766-UM001A-EN-P - October 2008
20 Installing Your Controller
EMC Directive
This product is tested to meet Council Directive 2004/108/EC
Electromagnetic Compatibility (EMC) and the following standards, in
whole or in part, documented in a technical construction file:
•EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
•EN 61131-2; Programmable Controllers (Clause 11)
•EN 61000-6-4
EMC - Part 6-4: Generic Standards - Emission Standard for
Industrial Environments
•EN 61000-6-2
EMC - Part 6-2: Generic Standards - Immunity for Industrial
Environments
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 2006/95/ECLow
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 B115
Installation Considerations
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
(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.