Module status display, Table 47 - major fault code messages, Reset the module – Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual User Manual
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Rockwell Automation Publication 1756-UM535D-EN-P - November 2012
Appendix A
Status Indicators
Module Status Display
A character string scrolls across the Module Status Display to indicate the fault
type. The character string displays the fault type in either of these ways:
• Two
to four-character word abbreviations
• Alpha numeric codes
This table describes the two to four-character word abbreviations.
Table 47 - Major Fault Code Messages
1st Word
2nd Word
3rd Word
4th Word
Error Description
CFG
LOG
ERR
Configuration log error. No action is required.
COMM
RSRC
ERR
Communication resource error. Reset the redundancy
module.
COMM
RSRC
ERR
PRT1
Port1 Communication resource error on Backplane.
Reset the redundancy module and check the chassis.
COMM
RSRC
ERR
PRT2
Port2 Communication resource error on redundancy
link. Complete these tasks:
1. Reset the module.
2. Check the cable.
COMM
ERR
PRT1
Port1 Communication error, Backplane communication.
Check or replace the chassis.
COMM
ERR
PRT2
Port2 Communication error on the redundancy link.
Check or replace the single-mode cable.
COMM
ERR
General Communication Error. No action is required.
DUPL
RM
Duplicate redundancy module. This module is not in
control. Remove this redundancy module.
EVNT
LOG
ERR
Event Log Error. No action is required.
FMWR
ERR
Firmware error. Update the firmware.
HDW
ERR
Hardware failure. Replace the module.
OS
ERR
Operating system error. Replace the module.
RM
PWR
DOWN
The redundancy module Power Down, Module detected
a DC_Fail condition.
Check the other modules in the chassis.
WDOG
ERR
Watchdog time out. Reset the module.
WDOG
FAIL
Watchdog task failed its status check. Replace the
module.