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Siemens S7 Integration to DeltaV Via Modbus TCP/IP
By Martin Berutti
Product: IOD-4101 - Modbus TCP/IP Master Driver (General Modbus TCP/IP Communications)

This technical note discusses Industrial Ethernet integration options for Siemens S7 PLCs with DeltaV.

Siemens S7 PLCs support communication with 3rd party systems via the Modbus TCP/IP protocol. We have reviewed the documentation for this solution and have concluded that it will work for integration with DeltaV systems using the DeltaV Virtual IO Module, VIM-4201, and the Modbus TCP/IP Driver, IOD-4101.

Siemens has a new white paper on using Modbus TCP/IP with S7 PLCs available for review.

For more information on the Modbus TCP/IP Driver please refer to the following manual: Modbus TCP Master/Slave Driver for DeltaV Virtual I/O Module

Siemens Hardware Requirements

  • S7 model 300 PLCs use the CP 343-1 module with part number MLFB 6GK7 343-1EX11-0XE0 or newer (6GK7431EX200XE0)
  • S7 model 400 PLCs use the CP 443-1 with part number MLFB 6GK7 443-1EX11-0XE0 or newer (6GK7431EX300XE0)

*Newer hardware versions might be available which contain the functionality of the communication modules mentioned here.

Siemens Software Requirements

  • Software Version required is STEP7 Version 5.1 or higher with the option NCM S7 for Industrial Ethernet.