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  1. Modbus: The Original Industrial Fieldbus Protocol

    Sep 2, 2025 · This article introduces Modbus, an industrial protocol that laid the foundation for fieldbus communication in industrial systems.

  2. How-To: Building a PLC Project with Modbus Communication

    Apr 5, 2022 · How-To: Building a PLC Project with Modbus Communication Modbus is a communication protocol stemming from the early days of Modicon PLCs, but is still common today. These two …

  3. Confused: Modbus TCP vs. Modbus RTU Over TCP - Control.com

    May 19, 2011 · Modbus RTU over TCP/IP is typically used by serial servers where you can have an Modbus Ethernet client communicating with multiple Modbus RTU- RS485 slaves, by way of a serial …

  4. Modbus TCP cable | Automation & Control Engineering Forum

    Jan 15, 2025 · Hello, Is it possible to run Modbus TCP protocol if cable lenght is 130-140m? It will work if I use cat6 instead of cat5? do you have experience with that?

  5. Introduction to Modbus and Modbus Function Codes

    Jan 30, 2023 · Introduction to Modbus and Modbus Function Codes Modbus is one of the oldest industrial communication protocols still in use today. Continue reading to find out how the protocol …

  6. How to read from modbus/tcp using libmodbus - Stack Overflow

    I have a moxa ioLogik E1214 and I want to communicate with it using modbus/tcp. I found a library that should do that - libmodbus. Firstly i copied the code sample from their website and changed it a

  7. Create a simple Client/Server using Modbus in C

    Apr 13, 2015 · To do so, I would like to create a client and a server that will talk using the modbus protocol. I am not sure if I want to be using ModBus/TCP, ModBus/RTU or ModBus/ASCII for now. I …

  8. Read float values Modbus/TCP ESP8266 - Stack Overflow

    Jun 24, 2022 · Modbus holding (and input) registers are 16-bit values. If a higher level of precision is required then multiple registers are combined (there are many ways this can be done!). The EEM …

  9. Choosing an Interface: Why Modbus is Still Around After 40 Years

    Mar 19, 2021 · Learn about the advantages of Modbus over newer protocols when choosing an interface with third-party devices.

  10. Modbus 485 Communication In Case of 2 or more Masters/Clients

    Dec 17, 2023 · 1 You can't put multiple masters on a serial line. You need a different hardware setup where you put a Modbus TCP to RS485 Gateway (not a dumb serial to ethernet converter) in front of …