User manual

Publication CNET-UM001C-EN-P - November 2005
Troubleshoot Your ControlNet Communication Modules 8-13
Module Status (MS) indicator
This table describes the 1769-L32C and 1769-l35CR CompactLogix controller
module status indicators.
Table 8.5 1769-L32C and 1769-L35CR CompactLogix Controller Module Status Indicators
If The Module Status
(MS) Indicator Is
It Means Take This Action
Off The controller has no power. Apply power.
The controller is faulted. Make sure that the controller is properly installed.
Steady red A major fault has occurred on the controller. 1. Cycle power.
2. If the problem persists, replace the controller.
Flashing red A firmware update is in progress. No action required (firmware update in progress.)
A node address switch change 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 has 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. None
Flashing green No connections are established. Establish connections, if necessary.
Flashing red/green The controller is performing self-diagnostics. 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.