ProSoft Technology MVI69-DFNT User Manual
Page 61

MVI69-DFNT ♦ CompactLogix or MicroLogix Platform
Diagnostics and Troubleshooting
EtherNet/IP Client/Server Communication Module
User Manual
ProSoft Technology, Inc.
Page 61 of 167
May 14, 2014
Module Errors
Problem Description
Steps to take
BP ACT LED remains
OFF or blinks slowly
This indicates that backplane transfer operations are failing. Connect to the
module’s Configuration/Debug port to check this.
To establish backplane communications, verify the following items:
The processor is in RUN mode
The backplane driver is loaded in the module
The module is configured for read and write block data transfer
The ladder logic handles all read and write block situations
The module is configured in the processor
OK LED remains RED
The program has halted or a critical error has occurred. Connect to the
Configuration/Debug port to see if the module is running. If the program has
halted, turn off power to the rack, remove the card from the rack and re-
insert the card in the rack, and then restore power to the rack.