![]() Connect router to PC via RS232/RS485 port. ![]() Step1: Install Modbus Slave simulate as industrial device, Modbus Poll as SCADA or HMI. This article briefly describes how to request Modbus RTU device data from Modbus TCP client on Milesight routers. Milesight UR router has Modbus RTU to Modbus TCP function that can read Modbus data from Modbus RTU device and publish it as Modbus TCP data to the server and vice versa. MODBUS TCP/IP runs on an Ethernet physical layer, and Modbus RTU is a serial level protocol. ![]() But the two used most are Modbus RTU (Remote Terminal Unit), serial (RS-232 or RS-485) protocol or Modbus (TCP/IP) Transmission Control Protocol and Internet Protocol. It is used to establish master-slave/client-server communication between devices. Modbus Protocol is a messaging structure developed by Modicon.
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