![]() Modbus RTU is the most common implementation available for Modbus. The RTU format follows the commands/data with a cyclic redundancy check checksum as an error check mechanism to ensure the reliability of data. This mode is used in serial communication and makes use of a compact, binary representation of the data for protocol communication. Modbus for Arduino/RaspberryPi/Galileo uses RTU mode of transmission. This list includes some of the most common uses of the standard: Many of the data types are named from its use in driving relays: a single-bit physical output is called a coil, and a single-bit physical input is called a discrete input or a contact. Modbus allows communication between many devices connected to the same network, for example a system that measures temperature and humidity and communicates the results to a computer. It has been developed with industrial applications in mind.Modbus communication protocol presents the follow features: Simple and robust, it has since become a de facto standard communication protocol, and it is now a commonly available means of connecting industrial electronic devices. Modbus is located in the level 2 of the OSI model, and uses a master/slave (or client-server) architecture. Modbus is a serial communications protocol originally published by Schneider Electric in 1979 for use with their programmable logic controllers (PLCs). ![]()
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