Port Status Indicator; Mod Status Indicator - Allen-Bradley 20-COMM-M Modbus/TCP Adapter User Manual

5-2 Troubleshooting

PORT Status Indicator

Status Cause
Off The adapter is not powered or is not properly
connected to the drive.
Flashing Red The adapter is not receiving a ping message from
the drive.
Steady Red The drive has refused an I/O connection from the
adapter.
Another DPI peripheral is using the same DPI port
as the adapter.
Steady Orange The adapter is connected to a product that does not
support Allen-Bradley DPI communications.
Flashing Green The adapter is establishing an I/O connection to the
drive.
Steady Green The adapter is properly connected and is
communicating with the drive.

MOD Status Indicator

Status Cause
Off The adapter is not powered or is not properly
connected to the drive.
Flashing Red The adapter has failed the firmware test.
The adapter is being flash upgraded.
Steady Red The adapter has failed the hardware test.
Flashing Green The adapter is operational, but is not transferring
I/O data.
Steady Green The adapter is operational and transferring I/O data. No action required.
20-COMM-M Modbus/TCP Adapter User Manual
Publication 20COMM-UM014C-EN-P
This red/green bicolor LED indicates the status of the adapter's connection
to the drive as shown in the table below.
This red/green bicolor LED indicates the status of the adapter as shown in
the table below.
Corrective Action
Securely connect the adapter to the drive using the Internal
Interface (ribbon) cable.
Apply power to the drive (or adapter if mounted in a DPI
External Comms Kit).
Verify that cables are securely connected and not damaged.
Replace cables if necessary.
Cycle power to the drive (or adapter if mounted in a DPI
External Comms Kit).
Important: Cycle power to the drive (or adapter if mounted in a
DPI External Comms Kit) after making any of the following
corrections:
Verify that all DPI cables on the drive are securely
connected and not damaged. Replace cables if necessary.
Verify that the DPI drive supports Datalinks.
Configure the adapter to use a Datalink that is not already
being used by another peripheral.
Connect the adapter to a product that supports Allen-Bradley
DPI communications (for example, a PowerFlex 7-Class drive).
No action required. Normal behavior if no DPI I/O is enabled.
No action required.
Corrective Action
Securely connect the adapter to the drive using the Internal
Interface (ribbon) cable.
Apply power to the drive (or adapter if mounted in a DPI
External Comms Kit).
Clear faults in the adapter.
Cycle power to the drive (or adapter if mounted in a DPI
External Comms Kit).
If cycling power does not correct the problem, the adapter
parameter settings may have been corrupted. Reset
defaults and reconfigure the adapter.
If resetting defaults does not correct the problem, flash the
adapter with the latest firmware release.
Cycle power to the drive (or adapter if mounted in a DPI
External Comms Kit).
Replace the adapter.
Verify that the controller can send messages to the adapter.
Normal behavior if no DPI I/O is enabled.