Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual - Manual (Page 200)

200 Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Chapter 9 Troubleshoot a Redundant System
Check the Module Status
Indicators
If an error or event occurs in the enhanced redundancy system, check the module
status indicators to determine which module is causing the error or event.
If any of the modules have status indicators that are steady or blinking red, then
examine that module status display and the RMCT or other software to
determine the cause.
Figure 58 - Steady or Flashing Red Indicators that Indicate Errors on 1756-RM2/A or 1756-RM2XT
Modules
Figure 59 - Steady of Flashing Red Indicators that Indicate Errors on 1756-RM/1756-RMXT
Modules
For more information about module status indicators, see Appendix A , Status
Indicators on page 227 .
Figure 60 - Module Status Displays For Chassis with 1756-L6x and 1756-L7x Controllers
CH2 CH1 OK
PRI COM OK
PRI COM OK CH2 CH1 OK
1756-L6x Controller and 1756-RM Module
1756-L6x Controller and 1756-RM2/A Module
CH2 CH1 OK PRI COM OK
1756-L7x Controller and 1756-RM Module 1756-L7x Controller and 1756-RM2/A Module