MVI56E-MCM ♦ ControlLogix Platform Start Here
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 29 of 209
4 Click [+] to expand the MCM.CONFIG.MODDEF section, and then change the
READREGCNT parameter from 600 to 1000.
5 Save and download the sample program to the processor.
6 Go Online with the ControlLogix processor, and then toggle the
MCM.CONTROL.WARMBOOT bit to download the configuration to the
MVI56E-MCM module.
Note: Any changes made to the MCM.CONFIG or WriteData arrays must be downloaded to the
MVI56E-MCM module. The use of the MCM.CONTROL.WarmBoot or MCM.CONTROL.ColdBoot
bit will cause the MVI56E-MCM module to re- read the configuration from the ControlLogix
processor.
To modify the WRITEDATA array, follow the steps in this topic, but substitute
WRITEDATA for ReadData throughout. Also, make sure that the READDATA and
WRITEDATA arrays do not overlap in the module memory. For example, if your
application requires 2000 words of WriteData starting at register 0, then your
MCM.CONFIG.MODDEF.READSTARTREG must be set to a value of 2000 or
greater.
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