1. Send Modbus-RTU command to the device through RS-485 via the assigned "RS485_Serial." 2. Get responses from the device through RS-485. 3. Send the device responses to the human-machine interface ...

This example demonstrates how to use the IS4310 Modbus RTU Slave chip with the Arduino platform. The sketch creates a Modbus actuator using the IS4310. The Arduino reads Modbus Holding Registers 1, 2, ...

Abstract: 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 ...