Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 49
1768 ControlNet Module Status Indicators Appendix B
Network Channel Status Indicators
The ControlNet network channel-status indicators appear in one of these states:
• Steady—The 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.
Table 8 - Network Channel Status Indicators A or B
Status Description
Off There is no power.
Steady red The module has faulted.
Cycle power to the module. If the fault persists, contact your Rockwell Automation representative or
distributor.
Alternating red/green The module is undergoing a self-test.
Alternating red/off A node was configured incorrectly, or a duplicate ControlNet node address exists.
Check the node address and other ControlNet module configuration parameters.
Off A channel has been disabled.
Program the network for redundant media, if necessary.
Steady green Normal operation is occurring.
Flashing green/off Temporary network errors exist.
The node is not configured to go online.
Make sure the network keeper is present and working, and that the selected address is less than or
equal to the UMAX
(1)
.
Flashing red/off Media has faulted.
Check media for broken cables, loose connectors, and missing terminators.
If the condition persists, see the ControlNet Coax Media Planning and Installation Guide, publication
CNET-IN002
.
No other nodes are present on the network.
Add other nodes to the network.
Flashing red/green The ControlNet network was configured incorrectly.
Cycle power or reset the module. If the fault persists, contact your Rockwell Automation
representative or distributor.
(1) UMAX is the highest node address on a ControlNet network that can transmit data.
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