Intermediate PLC Programming: Interrupt Priority Design for Timely Response to Critical Tasks! Introduction Hello everyone! Today I want to share a magical technique that can make your PLC program “perceptive” — interrupt priority design. Don’t worry about the technical jargon; I will explain this seemingly profound concept in the most relatable way. By mastering this … Read more
Introduction In the era of Industry 4.0 and the Industrial Internet of Things (IIoT), seamless connectivity and real-time monitoring are crucial for efficient industrial processes. However, a common challenge in this field is the quick access to HMI visualization interfaces, especially when dealing with multiple PLCs scattered throughout a factory or during maintenance operations. Traditional … Read more
In PLC programming, we often encounter some professional English vocabulary, which can be very difficult for beginners to understand. This article summarizes some commonly used professional English vocabulary for PLCs and provides translations. 01Words starting with ‘a’ absolute absolute position Absolute output absolute maximum output actuator actuator against comparison allocate allocation alter change/modification ambient surrounding … Read more
PLC Communication Made Easy: A Shortcut to Mastering the Modbus Protocol Hello everyone, I am Lao Liu. With over twenty years of PLC programming experience, I can tell you that many beginners are most afraid of the communication part. Today, let’s talk about something practical—the Modbus protocol. It may seem complex, but it is essentially … Read more
“PLC High-Speed Counters: The Black Technology That Makes Equipment’s ‘Heartbeat’ Accurate to 0.1%!” 1️⃣ Single-phase Counter: The ‘Lone Ranger’ Expertise: A single signal line can handle simple counting scenarios. Pitfall: Weak anti-interference ability, prone to ‘going crazy’ under electromagnetic interference. 2️⃣ Dual-phase Counter: The ‘Dual Swordsman’ Expertise: Two signal lines distinguish forward and reverse rotation, … Read more
In PLC programming, the physical contact of the stop button is generally connected as normally closed, while in the program, it is written as normally open. This type of stop button only serves as a signal in this equipment.Why is the emergency stop in PLC programming opposite to that of a regular emergency stop button? … Read more
1. Question Type Distribution and Examination Context in Guangdong Number of Questions: A total of 30 questions (10 questions on graphic reasoning, 10 questions on logical judgment, 5 questions on analogy reasoning, and 5 questions on scientific reasoning). Characteristics: Graphic Reasoning: Flexible patterns, with recent additions of spatial questions such as three-dimensional combinations and three-view … Read more
The Chengdu tech scene has been buzzing these days—China’s Edge AI leader Yuntian Life has established its second headquarters in the Tianfu New Area’s innovation ecosystem. This is no small feat; consider this, the player that is racing the fastest in the national large model arena has chosen Chengdu to develop a major strategy in … Read more
In recent years, the explosive development of wireless technology has given rise to various industrial, scientific, and medical (ISM) band wireless standards. With these new standards, various wireless applications have permeated every aspect of our daily lives. Undoubtedly, Wireless Sensor Networks (WSN) are one of the most significant applications benefiting from these standards. Imagine a … Read more
Abstract: In the development of modern agriculture, precision agriculture has become an inevitable trend and a necessary demand for agricultural industry development. In the current practical development of precision agriculture, more and more modern technologies are being applied, among which wireless sensor networks are particularly important and beneficial for the development of precision agriculture. Therefore, … Read more