Overview

The TwinCAT Modbus TCP server enables to communicate over a network connection (TCP/IP) with the Modbus protocol.

Modbus is an open standard in industrial communication which will be maintained by the independent Modbus Organization.

The protocol is based on a client/server-architecture. Therefore the product can be used as client or as server:

Overview 1:

Server functionality:

(1) The TwinCAT Modbus TCP server enables to access the TwinCAT PLC. The Modbus register and I/O's are then mapped to TwinCAT PLC areas.

Client functionality:

(2) The supplied PLC-library allows to communicate with other Modbus devices to request data (e.g. measured values, states) and control them.