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  1. Modbus Organization

    A community for the Modbus communications protocol - data communication between devices over TCP/IP and over serial line – open and royalty-free since 1979. Visit Modbus.org to …

  2. Specifications and Implementation Guides - Modbus Organization

    Specifications and Implementation Guides Please review the license agreement before downloading any Modbus protocol or related documents.

  3. Restricted Page - Modbus Organization

    Contact 4 Lan Drive Suite 100 Westford, MA 01886 978.250.9847 Association Management Software Copyright © 2025 - Modbus Organization. Legal

  4. Technical Resources - Modbus Organization

    Open-source Modbus library (client/server) for Modbus ASCII, Modbus RTU, Modbus TCP, and Modbus UDP. Written in C#, the code library is designed for implementation in .NET projects.

  5. Modbus - Device information

    MODBUS Protocol is a messaging structure developed by Modicon in 1979, used to establish client-server communication between intelligent devices.

  6. Modbus - Supplier information

    MODBUS Protocol is a messaging structure developed by Modicon in 1979, used to establish client-server communication between intelligent devices.

  7. ChinaTourPR - Modbus

    Other presentations include an introduction to the ITEI Modbus Conformance Test Laboratory by Test Engineer, Mr. Mei Ke, and an introduction to basic Modbus technology by Dr. Sun Xin of …

  8. Purchase of the Test Harness with Modbus protocol components includes a module to automatically perform the University of Michigan Modbus Conformance Tests. An easy-to-use …