ControlLogix AC (79-132V) Diagnostic Module
11
Publication 1756-5.5 - September 1999
Check the Indicators
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LED
indicator:
This display:
Means:
Take this action:
OK
Steady green light
The inputs are being
multicast and in normal
operating state.
None
OK
Flashing green light
The module has passed
internal diagnostics but is not
multicasting inputs.
None
OK
Flashing red light
Previously established
communication has timed
out.
Check controller and chassis
communication.
OK
Steady red light
The module must be
replaced.
Replace the module.
I/O State
Yellow
The input is active.
None
I/O Fault
Red
A fault has occurred for this
point.
Check this point at the controller.
20927-M
Allen-Bradley Drives