![Modbus rtu arduino proteus](https://kumkoniak.com/81.jpg)
![modbus rtu arduino proteus modbus rtu arduino proteus](http://pdacontroles.com/wp-content/uploads/2020/08/PZEM-ESP32-rs485.png)
And apart from this, the Modbus is also used in Healthcare, Transportation, Home Automation etc. Modbus are mostly used in PLCs (Programmable Logic Controllers).
![modbus rtu arduino proteus modbus rtu arduino proteus](http://es.trialcommand.com/wp-content/uploads/2017/03/Arduino_Slave_modbus_trialcommand-1.jpg)
In this MAX485 Arduino project, we will use Arduino Uno as Slave for serial communication.
![modbus rtu arduino proteus modbus rtu arduino proteus](https://alexnld.com/wp-content/uploads/2020/01/e40713c1-f794-49b9-bc63-d023f4c3590c.jpg)
In RS-485 Modbus network there is one Master and 127 Slaves each with unique address from 1 to 127. It is divided into two parts such as Modbus Master and Modbus Slave. It should be noted that Modbus is a software protocol and not a hardware protocol. RS-485 Modbus uses RS-485 for transmission lines. Modbus is a Serial Communication protocol which was discovered by Modicon in 1979 and it is used for transmitting data over serial lines between the industrial electronic devices.
![Modbus rtu arduino proteus](https://kumkoniak.com/81.jpg)