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Modbus Industrial Internet of things Gateway is a protocol converter that supports Modbus interface (RS232/485) and Modbus TCP. With Modbus TCP to Modbus RTU function, it is an industrial gateway device that supports multi-protocol conversion, and also supports private protocol conversion of all kinds of manufacturers. It can easily and conveniently centrally manage scattered serial devices and hosts through the network, and users can easily realize the connection between Modbus Ethernet devices and Modbus serial port devices in the industrial Internet of things gateway. At the same time, the information industry Internet of things gateway also supports edge computing and face recognition functions, which can help users filter unneeded data, solve the problem of excessive transmission data and bandwidth required, and help enterprise management. Video depth analysis function can help enterprises to analyze abnormal behavior in the region and give an alarm in time.

What is the Modbus Industrial Internet of things Gateway?

Industrial Internet of things Gateway is a bus protocol used in industrial field. Modbus communication protocol industrial gateway is common in the communication of third-party equipment, such as DCS reading the data of PLC and intelligent instruments (Flowmeter, analyzer and other equipment). It is usually divided into three types of data protocols, Modbus RTU and Modbus TCP/IP, Modbus ASCII.

Introduction of three Communication protocols of Modbus Gateway

Modbus gateway protocol is divided into three communication modes: Modbus RTU, Modbus ASCII and Modbus TCP.

The communication format of Modbus TCP is similar to Modbus RTU, except that Modbus RTU is followed by a two-byte CRC check, while Modbus TCP does not.

The communication format of Modbus ASCII and Modbus RTU actually split each byte of Modbus RTU (for example, 27H) into two bytes, the higher four bits (2) and the lower four bits (7), and display them in the form of ASCII code (3237), and then add the beginning and Terminator to the frame, respectively. Of course, the verification methods of Modbus RTU and Modbus ASCII are different, so the same Modbus RTU mode and Modbus ASCII mode are not introduced here. Although there is a great difference in length, the actual meaning is the same.

Information Industry Internet of things Gateway: as a multi-functional device, www.top-iot.com/index.php?m=content&c=index&a=lists&catid=55 not only supports public protocols, but also supports private protocols of various manufacturers to meet the requirements of various industries for data transmission. In different fields, the industrial Internet of things gateway can not only be used as the terminal of data transmission, but also act as regional equipment controller and control, such as street lamp on and off, monitoring, watering time of flower bed and so on. become the intelligent control center of the city.

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