The Arduino RS485 Module is used for RS485 communication. In the examples, Arduino Mega is used as the Master, and Arduino Uno is used as the Slave. These examples are: MasterReceiver-SlaveTransmitter ...

This paper explains how to set up the communication between PLC and Arduino based on Modbus Protocol. PLC is a master and Arduino is a slave. A Fx2N-48MR, a Fx2N-485BD, an Arduino main board and an ...

Originally developed for master/slave networks for industrial machine controls, Modbus is being used to connect an Arduino to a PLC. Modicon, the brand behind Modbus, introduced it to the ...

Contains examples of Modbus (RS485) communication with Arduino. In the examples, Arduino Mega is used as the Master, and Arduino Uno is used as the Slaves. ... The Master Arduino sends data to the ...