Modbus communication

It enables communication between various devices such as PLCs, sensors, HMIs, and SCADA systems by using a master-slave (or client-server) architecture. The protocol is simple and robust, allowing data to be transmitted over serial lines (Modbus RTU/ASCII) or Ethernet networks (Modbus TCP). In a typical Modbus network, the master device initiates communication by sending a request to a slave device, which then responds with the requested data or an acknowledgment. Devices' digital and analog inputs and outputs are represented by discrete inputs, coils, input registers, and holding registers, all of which can be read and written to using Modbus.