To maintain the current value of each mapped CIMPLICITY point within the data address space, the Modbus TCP Slave Interface will accept unsolicited updates (from CIMPLICITY) for all mapped points. Thus, the Modbus master may read values from CIMPLICITY points mapped to any supported memory type (0X, 1X, 3X, and 4X).
However, the Modbus TCP Slave Interface will only attempt to write to CIMPLICITY points that are mapped to data addresses of memory type 0X or 4X. Thus, the Modbus master may write values to CIMPLICITY points mapped to data addresses of memory type 0X or 4X.
Note that for a Modbus master write request to succeed, all data addresses specified must be valid and all corresponding values must be written successfully to PTMAP.
Expected Modbus TCP Slave runtime behavior.