Most complete Modbus library for Arduino. A library that allows your Arduino board to communicate via Modbus protocol, acting as a master, slave or both. Supports network transport (Modbus TCP) and Serial line/RS-485 (Modbus RTU). Supports Modbus TCP Security for ESP8266/ESP32.

This is an Arduino library that implements the slave/server logic of the Modbus RTU protocol.

A library to implement the master/client portion of the Modbus RTU protocol on Arduino

A native node addon to calcalate and verify CRC16 values, adopted by MODBUS agreement

A library to manage Modbus RTU communication on Arduino

A library for managing Modbus RTU and TCP ADUs

A library for the Arduino platform to connect Modbus TCP client devices to Modbus RTU slave/server devices.

This is an Arduino library that implements the slave/server logic of the Modbus TCP protocol.

A simple modbus slave

This is an Arduino library for processing Modbus requests.

Biblioteca Modbus para Arduino

This library provides some core functions for implementing Modbus TCP communication.

Library for working with Modbus devices.

Contains examples of Modbus (RS485) communication with Arduino. The Arduino RS485 Module is used for RS485 communication.

This project implements a wireless Modbus TCP sensor system using ESP32 microcontrollers. A master ESP32 polls one or more slave nodes over Wi-Fi to collect real-time temperature and humidity data from DHT22 or BME280 sensors. Ideal for Industrial IoT, embedded systems, and wireless monitoring applications.