Rockwell Automation 1734-VHSC24 Very High-Speed Counter Modules User Manual - Manual (Page 58)

Publication 1734-UM003B-EN-P - August 2005
6-2 Troubleshoot with the Indicators
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 is 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 is present - failed communication device.
Device detected error that prevents it communicating on the
network.
Flashing
Red/Green Communication faulted device - the device detected a
network access error and is in communication faulted state.
Device received and accepted an Identify Communication
Faulted Request - long protocol message.
Indication Probable Cause
Input Status
Off Input is inactive.
Yellow Input is active and under control.
Indication Probable Cause
Output Status
Off Output is inactive.
Yellow Output is active and under control.
Flashing Yellow Output is toggling.
Flashing Red Output is faulted (open, short or no output power).
Flashing
Red/Yellow Output is toggling and faulted (possibly open).