Rockwell Automation 1762-Lxxxx MicroLogix 1200 Programmable Controllers User Manual
Page 8

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
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
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
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