MVI56E-MCM ♦ ControlLogix Platform Diagnostics and Troubleshooting
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 117 of 209
5.9 Configuration Error Codes
During module configuration download, the OK and APP LEDs will cycle through
various states. If the OK LED remains RED and the APP LED remains OFF or
RED for a long period of time, look at the configuration error words in the
configuration request block. The structure of the block is shown in the following
table.
Module Configuration Errors
Port 1 Configuration Errors
Port 2 Configuration Errors
The bits in each configuration word are shown in the following table. The module
configuration error word has the following definition:
Read block start value is greater than the database size.
Read block start value is less than zero.
Read block count value is less than zero.
Read block count + start is greater than the database size.
Write block start value is greater than the database size.
Write block start value is less than zero.
Write block count value is less than zero.
Write block count + start is greater than the database size.
The port configuration error words have the following definitions:
Type code is not valid. Enter a value from 0 (Master) to 1
(Slave).
The float flag parameter is not valid.
The float start parameter is not valid.
The float offset parameter is not valid.
Protocol parameter is not valid.
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