Rockwell Automation 1756-CN2RXT ControlLogix-XT ControlNet Interface Module, Series B Installation Instructions User Manual
Page 30
30 ControlLogix-XT ControlNet Interface Module
Publication
1756-IN634A-EN-P - April 2009
ControlNet Indicator States (A AND B)
State
Cause
Action
Off
There is no power.
No action is required, or apply
power.
Steady red
Unit has faulted.
Cycle power or reset unit.
If fault persists, contact a
Rockwell Automation
representative or distributor.
Alternating
red/green
A self-test is being conducted.
No action is required.
Alternating
red/off
Node has been configured
incorrectly.
Check network address and other
ControlNet configuration
parameters.
ControlNet Channel Troubleshooting (A OR B)
State
Cause
Action
Off
Channel has been disabled.
Program network for redundant media,
if required.
Steady green
This is normal operation.
No action is required.
Flashing
green/off
Temporary errors exist.
None; unit will self-correct.
Node is not configured to go
online.
Make sure the configuration manager
node (keeper) is present and working,
and the selected address is not
greater than the maximum
unscheduled node address (UMAX).
(1)
(1)
The configuration manager node (keeper) is the node responsible for distributing ControlNet
configuration data to all nodes on the network.
Flashing red/off
A media fault exists.
Check media for broken cables, loose
connectors, or missing terminators.
No other nodes are present
on the network.
Add other nodes to the network.