Allen-Bradley 1734-IJ User Manual page 54

6-2 Troubleshoot the Module
Publication 1734-UM006B-EN-P - August 2005
Indication Probable Cause
Network Status
Off Device is not online.
- Device has not completed dup_MAC_id test.
- Device not powered - check module status indicator.
Flashing Green Device is online, but has no connections in the established
state.
Green Device online and has connections in the established state.
Flashing Red One or more I/O connections are in timed-out state
Red Critical link failure with failed communication device is
present. Device detected error that prevents it
communicating on the network.
Flashing Communication faulted device - the device detected a
Red/Green network access error and is in communication faulted state.
Device received and accepted an Identify Communication
Faulted Request with long protocol message.
Indication Probable Cause
Input Status
Off Input is inactive.
Yellow Input is active and under control.