Owner manual

Troubleshooting the ControlNet Module and Network
8-5
8.1.4 NET A and B Independently
Table 8.4 – NET A and B Independently: State Definitions
Status Cause Corrective Actions
One
channel
LED is
steady off
That channel is
disabled or not
supported.
•
Program the network for
redundant media, if required.
One
channel
LED is
flashing
red/green
There is an invalid
link configuration
for that channel.
•
Power cycle or reset the
module.
•
Reset the controller.
•
If the problem persists, contact
Rockwell Automation support.
One
channel
LED is
flashing
red/off
The channel is not
receiving network
activity.
•
Check media for broken calbes,
loose connectors, missing
terminators, etc.
One
channel
LED is
flashing
green/off
A temporary
channel error has
occurred, or the
channel is in listen-
only mode.
•
Verify the controller is present
on the network and working.
One
channel
LED is
steady
green
Normal operation
for that channel.
•
No action required.