Rockwell Automation 2080-LC20-20QBBR Micro820 20-point Programmable Controllers User Manual - Manual (Page 127)

Troubleshooting Appendix B
Rockwell Automation Publication 2080-UM005A-EN-E - December 2013 119
Controller Error Recovery
Model Use the following error recovery model to help you diagnose software and
hardware problems in the micro controller. The model provides common
questions you might ask to help troubleshoot your system. Refer to the
recommended pages within the model for further help.
Identify the error code and
description.
Refer to page 114 for
probable cause and
recommended action.
Clear Fault.
Correct the condition
causing the fault.
Return controller to RUN or
any of the REM test modes.
Test and verify system
operation.
Refer to page 114 for
probable cause and
recommended action.
Is the Fault
LED on?
Is the RUN
LED on?
Is the Power
LED on?
Are the wire
connections
tight?
Tighten wire connections.
Does the
controller
have power
supplied?
Check power.
Refer to page 114 for
probable cause and
recommended action.
Is an input LED
accurately
showing status?
Refer to page 114 for
probable cause and
recommended action.
Is the error
hardware
related?
Start
No
No
No No
No
No
No
Yes Yes
Yes
Yes
Yes
Yes
End
Yes