Network Channel Status Indicators - Rockwell Automation Allen-Bradley ControlNet 1734-ACNR User Manual

8-14 Troubleshoot Your ControlNet Communication Modules
Table 8.6 1769-L32C and 1769-L35CR Network Channel Status Indicators
If Both Channel
Indicators Are
Off
Steady green
Flashing green/off
Flashing red/off
Flashing red/green
If Either Channel
Indicator Is
Off
Steady red
Alternating red/green
Alternating red/off
(1)
UMAX is the highest node address on a ControlNet network that can transmit data.
Publication CNET-UM001C-EN-P - November 2005

Network Channel Status Indicators

Channel B is only labelled on the 1769-L35CR controller. The 1769-L32C
controller only has channel A but uses the second indicator in some LED
patterns as described in (Table 10)Need CR.
This table describes the 1769-L32C and 1769-l35CR CompactLogix network
channel status indicators.
It Means
A channel is disabled.
Normal operation is occurring.
Temporary network errors have occurred.
The node is not configured to go online.
Media fault has occurred.
No other nodes present on the network.
The network is configured incorrectly.
It Means
You should check the module status indicator.
The controller is faulted.
The controller is performing a self-test.
The node is configured incorrectly.
Take This Action
Program network for redundant media, if necessary.
None
1. Check media for broken cables, loose
connectors, missing terminators.
2. If condition persists, refer to the ControlNet
Coax Media Planning and Installation
Manual, publication and CNET-IN002.
Make sure the network keeper is present and
working and the selected address is less or equal to
(1)
the UMAX .
1. Check media for broken cables, loose
connectors, missing terminators.
2. If condition persists, refer to the ControlNet
Coax Media Planning and Installation
Manual, publication and CNET-IN002.
Add other nodes to the network.
Reconfigure the ControlNet network so that UMAX >
the card's node address.
Take This Action:
Check the module status indicator.
1. Cycle power.
2. If the fault persists, contact your Rockwell
Automation representative or distributor.
None
Check the card's network address and other
ControlNet configuration parameters.