Michelin Internal ControlLogix Practice Test

In Analog Outputs status LED meanings, what does Red Flashing indicate?

Green = outputs normal Red = module must be replaced Green flashing = diagnostic passed but not actively controlled Red Flashing = previously established communication has timed out

Correct Answer:

Red Flashing = previously established communication has timed out

Explanation:

Understanding how the Analog Outputs use their status LEDs helps you quickly diagnose what the module is doing with the controller. A green steady light means the outputs are operating normally. If green is flashing, the diagnostics have passed but the module isn’t actively controlling outputs right now. A red flashing light points to a communications timeout: the module had an established link with the controller, but that communication has timed out and updates aren’t being received. This is distinct from a solid red fault indicator, which would suggest a hardware fault that typically needs replacement. So the red flashing state specifically signals a timing issue in the controller communication rather than a direct hardware failure.

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