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  1. Modbus - Wikipedia

    Modbus is often used to connect a plant/system supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems.

  2. What is Modbus and How does it work? | Schneider Electric USA

    Sep 30, 2025 · Modbus is a serial communication protocol developed by Modicon published by Modicon® in 1979 for use with its programmable logic controllers (PLCs). In simple terms, it is a …

  3. Modbus Protocol

    Since Modbus protocol is just a messaging structure, it is independent of the underlying physical layer. It is traditionally implemented using RS232, RS422, or RS485. The function code in the request tells …

  4. What is the Modbus Protocol & How Does It Work? - NI

    May 30, 2025 · Modbus is an industrial protocol that was developed in 1979 to make communication possible between automation devices. Originally implemented as an application-level protocol …

  5. Modbus Organization

    The MODBUS Organization is a group of independent users and suppliers of automation devices that seeks to drive the adoption of the MODBUS communication protocol suite and the evolution to …

  6. Introduction to Modbus and Modbus Function Codes

    Jan 30, 2023 · Created in 1979 by Modicon (now Schneider Electric), Modbus was originally used to communicate with the Modicon family of PLCs. Today, Modbus is an open protocol used by PLC and …

  7. Modbus Protocol – Complete Guide for Automation Engineers

    Jan 25, 2024 · Modbus, a widely used serial communication protocol, operates by facilitating data exchange between electronic devices. In its basic configuration, a straightforward connection …

  8. Modbus Tutorial from Control Solutions

    Modbus is an industrial protocol standard that was created by Modicon, now Schneider Electric, in the late 1970’s for communication among programmable logic controllers (PLCs). Modbus remains the …

  9. Modbus Protocol Guide - Maple Systems

    Developed in 1979 by Modicon (now Schneider Electric), Modbus enables communication between hundreds of devices, including Human-Machine Interfaces (HMIs), Programmable Logic Controllers …

  10. Modbus Protocol 2025: From Basics to IIoT Integration | EMQ

    Mar 6, 2025 · Modbus is one of the oldest, simple and most widely used communication protocols in industrial automation and control systems, often dubbed the "grandfather of IoT communication". The …