There was no preparation in advance, and I arrived on-site quite late. The worst part was that I took the wrong download cable and couldn’t upload the program, which was extremely stressful. Fortunately, a client was not far away, and I borrowed a cable from there. After some back and forth, it finally started working. … Read more
CANopen PLC (PLC based on the CANopen protocol) is widely used in the field of industrial automation, with its high real-time performance, flexibility, and scalability making it suitable for various complex control scenarios. Below are common application project categories and specific examples: 1. Industrial Automation Control Production Line Control Automotive Manufacturing: Welding robots, assembly line … Read more
Distributed hydraulic synchronization system based on PROFIBUS. The system uses PROFIBUS bus communication, employing a combination of fuzzy self-tuning P closed-loop control and feedforward open-loop control methods for variable frequency speed regulation of the motor. It also utilizes configuration software for comprehensive monitoring, enabling continuous adjustment of the hydraulic synchronization system’s cylinder movement. The system … Read more
BACnet Slave to PROFIBUS Slave– ADFWEB Gateway Converter– Guangzhou Xinyu IoT Author: www.adfweb.com.cn Zou Wuyi Mobile185-020-77899 [email protected] 1 Features: HD67676 is a BACnet Slave/ PROFIBUS Slave converter. It has the following features: • Supports up to2000 BACnet objects (read/write); • Provides triple isolation betweenBACnet and power,BACnet and PROFIBUS, power and PROFIBUS; • Supports bidirectional information … Read more
In industrial communication, Profibus is a widely used fieldbus protocol, and termination resistors are crucial for its stable operation. Many engineers encounter issues such as unstable communication and data loss during debugging, often due to improper configuration of termination resistors. So, why must Profibus have termination resistors? How should they be configured correctly? This article … Read more
Detailed Explanation of Modbus-RTU Message Structure and Common Function Codes Modbus is a serial communication protocol that was published by Modicon (now Schneider Electric) in 1979 for communication with programmable logic controllers (PLCs). The Modbus protocol has now become the industry standard for communication protocols in the field of industrial control and is commonly used … Read more
The Modbus protocol is a widely used serial communication protocol in the field of industrial automation, primarily designed to facilitate data exchange between different devices (such as PLCs, sensors, instruments, and frequency converters). Its fundamental working principles can be understood from the following core dimensions: 1. Master-Slave Communication Structure Modbus employs a “master-slave” communication model, … Read more
DAP and JTAG There are various ways to connect to the Debug Access Port (DAP), which differ in cost, invasiveness, and security. The DAP allows access to the core within the chip, which is typically the first to boot or is a dedicated microprocessor used for managing chip boot, debugging, and initializing DVFS and DRAM … Read more
Hello everyone, welcome to <span>LiXin Embedded</span>. Today, let’s talk about JTAG boundary scan. This tool is a powerful means for testing PCB interconnections and internal chip logic, defined in the IEEE 1149.1 standard. If you haven’t read the first two articles in this series, I recommend going back to catch up on the basics of … Read more
Due to the unique nature of their business, financial institutions often hold vast amounts of customer data, including personal information, transaction records, and financial status, which are crucial to the national economy and people’s livelihoods. Therefore, ensuring data security and preventing leakage risks is particularly important. On the other hand, the various types of data … Read more