Acoustic Communication

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

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 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

Debugging MODBUS Communication Issues

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Debugging MODBUS Communication Issues

Search on WeChat Technical Training In actual industrial automation applications, various communications are essential, such as PN communication, S7 communication, MODBUS TCP communication, and MODBUS communication, among others; however, the most widely used is MODBUS communication, as it is an open, free, and universal communication protocol. Often, during equipment debugging on the industrial site, communication … Read more

Detailed Explanation of ModbusTCP Protocol

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Detailed Explanation of ModbusTCP Protocol

Search WeChat Technical Training Introduction Modbus was developed by MODICON in 1979 and is a standard for industrial fieldbus protocols. In 1996, Schneider Electric launched the Modbus protocol based on Ethernet TCP/IP: ModbusTCP. The Modbus protocol is an application layer messaging protocol that includes three types of messages: ASCII, RTU, and TCP. The standard Modbus … Read more

Mastering RS485: Data Transmission Basics

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Mastering RS485: Data Transmission Basics

When it comes to communication, many people find it difficult and feel lost. I had the same feeling when I first encountered communication concepts. I gathered a lot of materials, mostly theoretical, and it always felt like I had no starting point. After finally understanding it, I realized that the main reason for not grasping … Read more

RS-232-C Serial Port and Cable Usage Instructions

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RS-232-C Serial Port and Cable Usage Instructions

The serial interface, abbreviated as serial port, is also known as the serial communication interface (usually referring to the COM interface). It is an expanded interface that uses serial communication. If classified by interface, there are several types including RS-232, RS-422, and RS-485, among which the RS-232 serial port is the most commonly used serial … Read more

Debugging Tool – Serial Port Debugging

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Debugging Tool - Serial Port Debugging

Click the blue text / Follow us As we all know, our new version of the debugging tool from Bafanghui2022 has been released! I believe that electrical engineers will use it when encountering difficulties at work. Today, I will detail the serial port debugging function of our new version of the debugging tool. First, open … Read more

Research on Acoustic Configuration of Embedded Devices

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Research on Acoustic Configuration of Embedded Devices

1 Introduction A year ago, I researched an embedded device and found its acoustic configuration logic quite intriguing, but later focused on vulnerability exploitation and did not delve deeper. Recently, while studying wireless communications like sub-GHz, Bluetooth, and RF, I became interested again in transmitting information via acoustic signals, which led to this article documenting … Read more

Understanding Low Energy Bluetooth Technology

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Understanding Low Energy Bluetooth Technology

Source: Cypress Introduction Bluetooth technology has transformed wireless communication between devices due to its universality and simplicity. Devices can communicate wirelessly with a high level of security via Bluetooth. Due to its low power consumption and cost, Bluetooth plays a crucial role in applications ranging from high-speed automotive devices to complex medical equipment. The convenience … Read more