MicroLogix 1200 Programmable Controllers User Manual

Troubleshoot 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.

No

Refer to page C-2 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.

Is the error hardware related?

Yes

Start

Are the wire connections tight?

Yes

No

Tighten wire connections.

Is the Power

LED on?

Yes

No

Is the RUN

LED on?

Yes

No

Is the Fault

LED on?

Yes

Refer to page C-2 for

probable cause and recommended action.

No

Does the controller have power supplied?

Yes

Refer to page C-2 for

probable cause and recommended action.

No

Is an input LED accurately showing status?

Yes

Check power.

No

Refer to page C-2 for

probably cause and recommended action.

End

Publication 1762-UM001E-EN-P - February 2006