Industrial Automation

Application Case: Integrating CANopen Devices with PROFINET Controllers

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Application Case: Integrating CANopen Devices with PROFINET Controllers

Click on “Guangzhou Logistics Technology and Application Association” above to subscribe! Application Case How the Intelligent Logistics Drive System Integrates Electric Rollers (CANopen devices) with PROFINET Master Controller Application Scenario In an intelligent factory environment, an efficient logistics system requires an integrated and systematic approach, organically combining different adaptable logistics software and hardware technologies for … Read more

The Simplest Practical Introduction to CANopen

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The Simplest Practical Introduction to CANopen

Currently, the CANopen communication protocol has been widely used in the industrial field. Due to its object-oriented design philosophy, the CANopen protocol has become one of the standard communication interfaces for automation companies in countries like Europe. In this series of articles, we will introduce the basic content of the CANopen protocol, including object dictionary, … Read more

20 Types of PLC Component Numbering and Modbus Address Mapping Table

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For More Exciting Content, Click to Follow “Daodao Education” I have previously worked with microcontrollers and the following 20 types of PLCs for Modbus RTU serial communication. Now, I would like to share the mapping table of these 20 PLC input, output, and register components to their corresponding Modbus addresses. Mitsubishi FX3G-40MR/ES-A, Siemens S7-200 CPU226 … Read more

Siemens S7-200 PLC Modbus Communication Control Inverter (Part 1)

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Siemens S7-200 PLC Modbus Communication Control Inverter (Part 1)

Click the ” Jicheng Training ” above, select “Pin Public Account“ 150,000+ industrial control professionals are following this WeChat platform: technical sharing, learning exchange, industrial control videos (1) Modbus Communication Modbus communication of S7-200: S7-200 only supports the Modbus RTU protocol and does not support the Modbus ASCII protocol; Modbus is a master/slave communication mode … Read more

RS485 and Modbus Communication Protocol Tutorial

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RS485 and Modbus Communication Protocol Tutorial

Search on WeChat Technical Training In 1979, Schneider Electric established the Modbus protocol, a bus protocol used for industrial sites. Many industrial applications using RS485 communication adopt the Modbus protocol, so today we will explore RS485 communication and the Modbus communication protocol. 【1】/ Introduction In industrial control, power communication, and intelligent instruments, serial communication is … Read more

Detailed Explanation and Case Demonstration of Modbus Protocol

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Detailed Explanation and Case Demonstration of Modbus Protocol

The Modbus RTU communication protocol uses a master-slave response method for data communication. Requests can only be initiated by the master (PC, HMI, etc.) through a unique slave address, and the slave (terminal device) responds to the master’s requests, thus enabling half-duplex communication. This protocol only allows the master to initiate requests, and the slave … Read more

Common Communication Protocols for PLCs

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Common Communication Protocols for PLCs

Before we start this topic, we should understand a commonly confused issue. The difference between RS485 and MODBUS: RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for data exchange between devices from different manufacturers (generally for industrial purposes); the so-called protocol can also be understood … Read more

Modbus Simulation – Essential Skills for Beginners

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Modbus Simulation - Essential Skills for Beginners

Modbus Simulation – Essential Skills for Beginners In the field of industrial automation, we often encounter various communication protocols, such as Profibus, ControlNet, Ethernet, Canopen, and Modbus. Among these, the Modbus protocol is the most widely used, free, and open-source, and is supported by almost all manufacturers’ industrial equipment. When working on engineering projects, we … Read more

RS485 and Modbus Communication Protocol Tutorial

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RS485 and Modbus Communication Protocol Tutorial

Introduction In 1979, Schneider Electric established the Modbus protocol, a bus protocol for industrial sites. Today, many industrial applications using RS485 communication adopt the Modbus protocol. So today we will learn about RS485 communication and the Modbus communication protocol. 1 Preface In fields such as industrial control, power communication, and intelligent instrumentation, serial communication is … Read more

Understanding the Modbus Communication Protocol

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Understanding the Modbus Communication Protocol

1. Quick Ways to Learn Modbus 1.1 Register Mnemonics As a beginner, one might find the concepts of the Modbus protocol awkward, repetitive, and hard to distinguish, such as Coil Status, Discrete Input Status, Holding Register, and Input Register. Returning to the essence of the matter, in the field of industrial control PLC, it involves … Read more