Rockwell Automation 20-COMM-B BACnet MS/TP Adapter - Manual (Page 46)

5-4 Troubleshooting
NET A Status Indicator
State Cause Corrective Actions
Off The adapter is not powered or
is not properly connected to
the network.
• Securely connect the adapter to the drive
using the Internal Interface (ribbon) cable.
• Correctly connect the network cable to
the adapter’s network connector.
• Apply power to the drive (or adapter if
mounted in a DPI External Comms Kit)
and network.
Flashing
Red A network connection has
timed out.
• Enable the network device that is
providing control to the adapter.
• Check the amount of traffic on the
network.
Flashing
Green The adapter is properly
connected and communicating
on the network. No action required. The LED will flash
green each time the token is passed to the
adapter by another BACnet device.
NET B Status Indicator
State Cause Corrective Actions
Off Adapter is not powered, or is
not transmitting on the
network. If NET A indicator is off:
• Securely connect the adapter to the drive
using the Internal Interface (ribbon) cable,
and to the network using the appropriate
network cable.
• Correctly connect the network cable to
the adapter’s network connector.
Normal condition if the adapter is idle.
Flashing
Green The adapter is transmitting on
the network. No action required.