Must Read : Modbus ASCII Vs Modbus RTU Vs Modbus TCP/IP The combination of TCP/IP can simply be called as a transport protocol which does not define what the data means or how the data can be interpreted, but Modbus along with TCP/IP as an application protocol can be used to interpret the data. TCP/IP facilitates large number of simultaneous connections, so it’s the initiator choice whether to reconnect a connection or to re-use a lived connection.Īs we already know that TCP/IP are used to exchange blocks of data between computers and the primary function of TCP is to ensure that all the packets of the data are received which are been send whereas the IP will ensure whether messages are correctly been addressed and routed. TCP/IP that is called as Transmission Control Protocol and Internet Protocol, which provides the transmission medium for Modbus TCP/IP messaging. The most commonly used Modbus communication protocols are :. Modbus communication protocol exist for serial port as well as Ethernet port. Modbus uses a common language for devices and equipment to communicate with one and another. Modbus is the communication protocol first published by Modicon in 1979, incorporated for the industrial automation systems and to use with its Modicon Programmable Logic Controllers (PLCs). Modbus protocol is one of the oldest and the most popular communication protocol used in the field of industrial automation. Today we’ll discuss about Modbus TCP/IP, also known as Modbus-TCP is simply the Modbus RTU protocol with a TCP interface that runs on Ethernet.
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