You start the associated CIMPLICITY project before you start the Modbus TCP Slave Interface.
To start the associated CIMPLICITY project:
Load the project from the CIMPLICITY Workbench application.
Select Run from the Workbench Project pull-down menu, or
Click the Run button on the Workbench toolbar.
Check the list of started resident processes for the name MTCPSI_RP.
Modbus TCP Slave getting started steps.