The Modbus TCP Slave Interface determines the file specification of the configuration file at startup by combining the file name MTCPSI_RP.CFG with the file path of the project\data directory.
If the project has been created in the directory
C:\Program Files\GE Fanuc\Proficy CIMPLICITY\Projects\Data\
Then the configuration file specification is:
C:\Program Files\GE Fanuc\Proficy CIMPLICITY\Projects\data\MTCPSI_RP.cfg.
Step 1. Edit the Modbus TCP Slave configuration file.