MVI56E-MCM ♦ ControlLogix Platform Reference
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 139 of 209
No error, transfer successful
Error transferring general configuration information.
Error transferring Modbus Port 1 Master command list
Error transferring Modbus Port 2 Master command list
Ladder logic must handle the 9997 command. No ladder logic is required for the
warm or cold boot commands.
Write Configuration Block (-9000 and -6000 to -6003 or -6100 to -6103)
This special function is used to update the processor's module configuration
information when the module’s configuration has been altered by a remote
Master. The remote Master writes a block code 9997 to module register 15400
(Modbus Address 55401), causing the module to write its current configuration to
the processor. Ladder logic must handle the receipt of these blocks.
The first write block from the module contains a value of -9000 in the first word.
Block Response from Module to Processor
Port 1 Configuration (continued)
Port 2 Configuration (continued)
Blocks -6000 to -6012 and -6100 to -6112 contain the Master Command List
Data for ports 1 and 2, respectively:
Block Response from Module to Processor
-6000 to -6012 and -6100 to -6112
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