Modbus
Modbus is a serial communication protocol originally developed in 1979 for use with programmable logic controllers (PLCs) in industrial automation systems. It enables communication between electronic devices over various physical layers, such as RS-232, RS-485, Ethernet, and TCP/IP, using a simple master-slave architecture. The protocol is widely used for connecting industrial equipment like sensors, actuators, and controllers in manufacturing, building automation, and energy management.
Developers should learn Modbus when working on industrial automation, IoT, or SCADA systems that require reliable, low-level communication between devices in harsh environments. It is essential for integrating legacy industrial equipment, monitoring and controlling machinery, and implementing real-time data acquisition in sectors like manufacturing, utilities, and smart buildings. Its simplicity, open standard, and widespread adoption make it a go-to choice for interoperability in industrial networks.