Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 89)

Publication 1747-UM003A-EN-P
Troubleshooting 5-3
ControlNet Status
Indicators The following table explains module status when indicators are:
•
steady - indicator is on continuously in the defined state.
•
alternating - the two indicators alternate between the two defined states at
the same time (applies to both indicators viewed together). The two
indicators are always in opposite states, out of phase.
•
flashing - the indicator alternates between the two defined states (applies to
each indicator viewed independent of the other). If both indicators are
flashing, they must flash together, in phase.
Cause Action
Off No power None or power up
Steady red Faulted unit Cycle power
If fault persists, contact Allen-Bradley
representative or distributor.
Alternating red/
green Self-test None
Alternating red/
off Incorrect node
configuration Check network address and other ControlNet
configuration parameters
Off Channel disabled Program network for redundant media, if required
Steady green Normal operation None
Flashing green/
off Temporary errors None; unit will self-correct
Listen only Cycle power
Flashing red/off Media fault Check media for broken cables, loose connectors,
missing terminators, etc.
No other nodes present
on network Add other nodes to the network
Flashing red/
green Incorrect network
configuration Cycle power or reset unit
If fault persists, contact Allen-Bradley
representative or distributor.
B A