Rockwell Automation 1764-xxxx MICROLOGIX 1500 PROGRAMMABLE CONTROLLERS - Manual (Page 127)

Publication 1764-UM001B-EN-P - April 2002
Troubleshooting Your System C-3
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 C-2 for
probable cause and
recommended action.
Clear fault.
Test and verify
system operation.
Is the error
hardware
related?
Is the Power
LED on?
Are the wire
connections
tight?
Is the RUN
LED on?
Is the Fault LED on?
See page C-2 for
probable cause and
recommended action.
Start
Tighten wire
connections.
Is power supplied
to the controller?
Refer to page C-2 for
probable cause and
recommended action.
Check power.
Is an input LED
accurately showing
status?
See page C-2 for
probable cause and
recommended action.
No
Yes
Yes Yes
Yes
Yes
Yes
No No
No
No
No
No
Yes
Correct the condition
causing the fault.
Return controller to
RUN or any of the
REM test modes.