Modbus protocol supported by OneNET is based on TCP connection, namely Modbus over TCP, As a host, OneNET encapsulates data in TCP data to send and receive data. With simple transparent capability through DTU, it can realize Modbus protocol communication between bus device and platform, which can be widely applied to various industries using Modbus protocol.
Modbus communication protocol is an industrial fieldbus communication protocol, which is widely used in industrial automation control, and can realize industrial data acquisition, control and other functions. It can be widely used in DTU + Modbus scenarios (i.e. Bus protocol is Modbus, using DTU to connect platform), shown as below: