Hello friends, I hope you all are doing great. Today, I am going to share the new MAX485 RS-485 Module Library for Proteus V1.0 . RS-485 is how microcontrollers talk across a factory floor, a farm or a building: two wires, A and B, carry the data hundreds of meters, and many devices share them - energy meters, temperature controllers, VFDs, PLCs. Most of them speak Modbus RTU . The small MAX485 module puts an Arduino on that bus. Until now there was no MAX485 module in Proteus on which you could watch a Modbus master and a slave talk. Behind the parts sits our own model , written from the MAX485 datasheet and the Modbus RTU specification. DE turns the driver on and RE the receiver, the board's bias resistors hold the idle line, and the A and B pins of two modules form a real half-duplex bu ...