Protocall Convert Cat Data link mobusTCP10/31/2023 There are many variants of the Modbus protocol. It is still one of the most popular serial communication systems between PLC, Distributed Control Systems(DCS), controllers, sensors, actuators, field devices, and interfaces. Modicon (now Schneider Electric) originally published Modbus in 1979 to use with its programmable logic controllers (PLCs). Modbus is an open-source, royalty-free, de-facto standard for industrial communication protocols used widely by manufacturers to connect software and electronic devices. This article covers what is Modbus, why it is such a popular factory machine communication protocol, what is Modbus TCP, how does that compare to MQTT on different data use cases, how the two protocols can work together to enable IIoT use cases to benefit manufacturing customers.
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