Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 273)

Troubleshooting Your System
14–5
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 and to S:6 of the status file on page B–14 for further help.
Start Identify the error code
and description.
Refer to appendix B for
probable cause and
recommended action.
Return controller to
REM RUN or any of
the REM Test modes.
Clear fault using either
function key F9 or F10.
Place the controller in
REM PROGram mode.
Correct the condition
causing the fault.
Test and verify system
operation.
Tighten wire
connections.
Check power.
Does the
controller have power
supplied?
Refer to page 14–3
for probable cause and
recommended action.
Is the error hardware
related?
Are the wire
connections tight?
Is the Power
LED On?
Is the Run LED On
constantly?
Is an input or
output LED showing
proper status?
Refer to page 14–4
for probable cause and
recommended action.
No
Yes
No
No No
Yes
Yes
Yes
Yes
Is the Fault LED On?
No
No
Yes
Refer to page 14–3
for probable cause and
recommended action.
Yes
No
Troubleshooting