Rockwell Automation 1762-Lxxxx MicroLogix 1200 Programmable Controllers User Manual

Page 8

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Publication 1762-UM001G-EN-P - March 2011

Table of Contents iv

Critical and Noncritical Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Module Error Definition Table. . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

Call Rockwell Automation for Assistance. . . . . . . . . . . . . . . . . . . . . . C-8

Appendix D

Use Control Flash to Upgrade Your
Operating System

Prepare for Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Install ControlFlash Software . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Prepare the Controller for Updating. . . . . . . . . . . . . . . . . . . . . . D-2

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Missing/Corrupt OS LED Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Appendix E

Connect to Networks via RS-232
Interface

RS-232 Communication Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
DF1 Full-duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
DF1 Half-duplex Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2

Use Modems with MicroLogix 1200 Programmable Controllers E-3

DH-485 Communication Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5

Devices that use the DH-485 Network . . . . . . . . . . . . . . . . . . . . E-5
Important DH-485 Network Planning Considerations . . . . . . . . E-6
Example DH-485 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . E-9

Modbus Communication Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . E-12
ASCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-12

Appendix F

System Loading and Heat
Dissipation

System Loading Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1

System Current Loading Example Calculations (24-point Controller)
F-1
Validate the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2

System Loading Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

Current Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4
System Current Loading Example Calculations (40-point Controller)
F-6

System Loading Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-8

Current Loading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-8

Calculating Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-10

Glossary
Index

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