Rockwell Automation 1756-EN3TR ControlLogix EtherNet/IP Communication Module Installation Instructions - Manual (Page 19)

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Publication 1756-IN612B-EN-P - December 2009
Status Indicators
If the alphanumeric display and status indicators do not sequence through the
expected states, refer to the following troubleshooting tables. The three
bi-color (red/green) status indicators on the module provide diagnostic
information about the module and its connections to the network.
Indicator Status Description
LNK1,
LNK2
Off No link, or port administratively disabled, or port
disabled due to rapid ring faults or partial network fault
on active ring supervisor (LNK2).
Green One of these conditions exists:
•
A link exists on the port.
•
The ring network is operating normally on active
ring supervisor (LNK2).
Flashing green Activity exists on the port