Allen-Bradley ControlLogix 1756-IA8D - Check the Indicators

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