ProSoft Technology MVI69-GEC User Manual page 43

MVI69-GEC ♦ CompactLogix or MicroLogix Platform
Processor Errors
Problem Description
Processor Fault
Processor I/O LED
flashes
Module Errors
Problem Description
BP ACT LED remains
OFF or blinks slowly
OK LED remains RED
4.2 Using ProSoft Configuration Builder (PCB) for Diagnostics
4.2.1 Using the Diagnostic Window in ProSoft Configuration Builder
To connect to the module's Configuration/Debug serial port
1 Start PCB, and then right-click the module icon.
ProSoft Technology, Inc.
February 18, 2014
Steps to take
Verify that the module is plugged into the slot that has been configured for
the module.
Verify that the slot in the rack configuration has been set up correctly in
the ladder logic.
This indicates a problem with backplane communications. Verify that all
modules in the rack are configured in the ladder logic.
The module has a power supply distance rating of 2 on CompactLogix,
meaning that there must not be more than one other module between the
MVI69-GEC module and the power supply. If the module is used in a
MicroLogix system, verify that the backplane can supply the 800 mA
required by the module.
Steps to take
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
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.
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