Rockwell Automation Publication 1769-UM011H-EN-P - April 2012 135
Status Indicators Appendix A
Module Status (MS) Indicator
Network Channel 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 status
indicator patterns as described below.
Indicator Condition Recommended Action
Off The controller has no power. Apply power.
The controller is faulted. Make sure that the controller is firmly seated in the slot.
Steady red A major fault has occurred on the controller. 1. Cycle power.
2. If the problem persists, replace the controller.
Flashing red A minor fault has occurred because a firmware update is in progress. Normal operation - No action is required.
A node address switch change has occurred. The controller’s node address
switches may have been changed since power-up.
Change the node address switches back to the original setting. The module
will continue to operate properly.
The controller uses invalid firmware. Update the controller firmware with the ControlFlash Update utility.
The controller’s node address duplicates that of another device. 1. Remove power.
2. Change the node address to a unique setting.
3. Reapply power.
Steady green Connections are established. Normal operation - No action is required.
Flashing green No connections are established. Establish connections, if necessary.
Flashing red/green The controller is diagnosing a problem. Wait briefly to see if problem corrects itself.
If problem persists, check the host. If the daughtercard cannot communicate
with the host, the card may remain in self-test mode.
Indicator Condition Recommended Action
Off A channel is disabled. Program network for redundant media, if necessary.
Steady green Normal operation is occurring. Normal operation - No action is required.
Flashing green/off Temporary network errors have occurred. 1. Check media for broken cables, loose connectors, and missing
terminators.
2. If condition persists, refer to the ControlNet Planning and Installation
Manual, publication 1786-6.2.1.
The node is not configured to go online. Make sure the network keeper is present and working and the selected
address is less or equal to the UMAX
(1)
.
Flashing red/off Media fault has occurred. 1. Check media for broken cables, loose connectors, and missing
terminators.
2. If condition persists, refer to the ControlNet Planning and Installation
Manual, publication 1786-6.2.1.
No other nodes are present on the network. Add other nodes to the network.
Flashing red/green The network is configured incorrectly. Reconfigure the ControlNet network so that UMAX is greater than or equal
to the card’s node address.
Off You should check the MS indicators. Check the MS indicators.
Steady red The controller is faulted. 1. Cycle power.
2. If the fault persists, contact your Rockwell Automation representative
or distributor.
Alternating red/green The controller is performing a self test. Normal operation - No action is required.
Alternating red/off The node is configured incorrectly. Check the card’s network address and other ControlNet configuration
parameters.
(1) UMAX is the highest node address on a ControlNet network that can transmit data.
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