46 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Appendix A 1756 ControlNet Status Indicators
Network Channel Status Indicators
Table 5 - Network Channel Status Indicators A and 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.
Table 6 - Network Channel Status Indicators A or B
Status Description
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.
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.
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 An incorrect node address exists.
Change the node address so that it is less than or equal to the UMAX
(1)
. Then, stop and restart the
1784-PCIC and 1784-PCICS cards in RSLinx software.
The ControlNet network was configured incorrectly.
Reconfigure the ControlNet network so that the UMAX
(1)
is greater than or equal to the node
address.
(1) UMAX is the highest node address on a ControlNet network that can transmit data.
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