Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx - Manual (Page 175)

Troubleshooting 7-3
20-COMM-D DeviceNet Adapter User Manual
Publication 20COMM-UM002G-EN-P
NET A Status Indicator This red/green bicolor LED indicates the status of the network connection
as shown in the table below.
Status Cause Corrective Actions
Off The adapter or network is not powered, or the
adapter is not properly connected to the network.
• Securely connect the adapter to the drive using the Internal Interface
(ribbon) cable and to the network using a DeviceNet cable.
• Correctly connect the DeviceNet cable to the DeviceNet linear plug
(shipped with the adapter).
• Apply power to the drive (or adapter if mounted in a DPI External
Comms Kit) and network.
Steady Red The adapter failed the duplicate node address
detection test or a bus off condition exists.
• Configure the adapter to use a unique node address on the DeviceNet
network.
• Configure the adapter to use the correct network data rate.
• Verify that the network has the correct media installed.
Flashing Red An DeviceNet connection has timed out. • Place the scanner in RUN mode, or apply power to the peer device
that will send I/O.
• Check the amount of traffic on the network.
Flashing
Red/Green
The adapter has received an Identity Comm
Fault request.
Wait for the faulted node recovery to complete.
Flashing Green The adapter is properly connected but is not
communicating with any devices on the network.
• Place the controller in RUN mode, or apply power to the peer device
that will send I/O.
• Program the controller or peer device to recognize and transmit I/O or
make a messaging connection to the adapter.
• Configure the adapter for the program in the controller or the I/O from
the peer device.
Steady Green The adapter is properly connected and
communicating on the network.
No action required.