Embedded Hardware

 

  • System on Modules (SoM)
  • Single Board Computers (SBC)
  • Development Boards
  • Industrial PCs & Embedded Computers
  • IoT & Edge Computing Gateways
  • AI & Machine Learning Modules
  • Rugged & Industrial-Grade Components
  • Peripherals & Expansion Modules (Displays, Sensors, Power Modules)

Introduction and Example Programming of Siemens S7-200 Smart Modbus Communication

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Introduction and Example Programming of Siemens S7-200 Smart Modbus Communication

Search on WeChat Technical Training 01 Siemens S7-200 SMART as Modbus Slave 1.Check the Micro/WIN SMART Modbus RTU Slave instruction library (Figure 1), which should include the MBUS_INIT and MBUS_SLAVE subprograms. 2.Use SM0.1 to call the MBUS_INIT subprogram for initialization, and use SM0.0 to call MBUS_SLAVE, specifying the corresponding parameters. Detailed explanations of the parameters … Read more

Introduction to MODBUS and HART Communication

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Introduction to MODBUS and HART Communication

RS485 and MODBUS communication are commonly used concepts in industrial control systems, but they are different. Below is a brief introduction. RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for device data exchange between different manufacturers (generally for industrial purposes); in industrial environments, data 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

Implementing Modbus Protocol for Communication Between Microcontrollers and PLCs

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Implementing Modbus Protocol for Communication Between Microcontrollers and PLCs

1. Introduction The HMI (Human-Machine Interface) is increasingly used in industrial automation systems and devices due to its small size, high performance, and strong real-time capabilities. It features various displays such as letters, Chinese characters, graphics, and images, with a simple and user-friendly interface. Equipped with long-lasting membrane button keyboards, it is easy to operate. … 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

Understanding RS232, RS485, RJ45, and Modbus Protocols

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Understanding RS232, RS485, RJ45, and Modbus Protocols

Imagine a DC power supply with an output socket that has three pins: positive, negative, and ground. Correspondingly, the load’s plug should also have three pins that match the power supply side, allowing for correct energy supply. Note that there are three essential conditions to meet: The first is that the shape, size, and pin … Read more

Step-by-Step Guide to Modbus Communication

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Step-by-Step Guide to Modbus Communication

Search on WeChat Technical Training This article will introduce the detailed steps for Modbus communication between the S7-1200 PLC and the V20 frequency converter. 1. Find an S7-1200 PLC with an RS485 communication module and a V20 frequency converter. 2. Connect the RS485 module to the V20 frequency converter. The wiring method is to connect … Read more

Example: Controlling Inverters with Siemens PLC via MODBUS

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Example: Controlling Inverters with Siemens PLC via MODBUS

1. Overview of MODBUS Communication The MODBUS protocol consists of MODBUS protocol over serial links and MODBUS protocol based on TCP/IP. The serial link MODBUS protocol includes MODBUS ASCII (string) and MODBUS RTU. The MODBUS protocol library provided by 200SMART supports MODBUS RTU communication. MODBUS RTU sends data in hexadecimal values. MODBUS ASCII sends data … 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

Modbus Protocol and Implementation Tutorial

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Modbus Protocol and Implementation Tutorial

Modbus Introduction A brand new, customizable Modbus. This is a version you have never seen before. Easy to port and easy to use, with plenty of comments that you will love. The Modbus protocol is the standard communication protocol for industrial control devices, details can be found in the encyclopedia description. Simply put, the Modbus … Read more