Introduction This article has been in the works since September, and I finally clarified my thoughts this month, presenting some trade-offs. It has gone through three versions, and I still feel something is lacking; I hope for your guidance. I have been pondering a question: what constitutes a good architecture? Our first-generation architecture was borrowed … Read more
In embedded development, a basic logging system can record the program's runtime status, but a powerful logging system can proactively help us discover and diagnose issues. Once the basic functionality is implemented, we can use some advanced techniques to transform the logging system from a passive "recorder" into an active "diagnostic assistant". Hex Dump — … Read more
Introduction No matter how stable a system is, unexpected issues can still arise. An excellent program not only runs correctly but also can “respond calmly” when a fault occurs, clearly informing maintenance personnel “where the problem lies.” This is the diagnostic and error handling function of a PLC, akin to an airplane’s “black box.” 1. … Read more
Background This series of articles is based on the scenario initiated by American telecom giant Verizon, British Telecom BT Group, and UAE Telecom Etisalat, TMF Catalyst Project: Unleash the potential of GenAI-powered 5G network slicing. TMF Catalyst Project As the commercial deployment of 5G deepens, network slicing, as a core technology, provides customized network services … Read more
Video Recommendation In the previous issue, we discussed the EtherCAT configuration capabilities of the AWStudio Motion Control version. In this issue, we will focus on its powerful diagnostic and monitoring tools, examining how it helps developers grasp network status in real-time and quickly locate issues. AWStudio Motion Control VersionAWStudio Motion Control version provides real-time monitoring … Read more
✅ 1. <span>EXPLAIN FORMAT=JSON</span> —— In-depth Analysis of Execution Plans 🔍 Purpose Provides more detailed execution information than the standard <span>EXPLAIN</span>, including: Cost of accessing each table (<span>cost_info</span>) Details on index usage Whether temporary tables or sorting are used JOIN order and driving strategy 📌 Usage EXPLAIN FORMAT=JSON SELECT u.username, v.n_time FROM abc v JOIN … Read more
All brands of PLCs have self-diagnostic functions, but the skill in PLC repair lies in fully utilizing this function for analysis and accurately identifying the problem. Here are eight common error types that PLC repair personnel need to understand when the PLC presents abnormal alarms. 01Abnormal CPU When an abnormal CPU alarm occurs, check all … Read more
Click the blue text to follow us Network issues typically manifest as the following problems: ▪ Website inaccessible ▪ Application response is slow ▪ Intermittent connection drops ▪ Data transfer timeouts Focus: How to quickly locate the problem? Diagnostic Process Step 1: Basic Connectivity Check (ping command) # Check local loopback ping 127.0.0.1 # Check … Read more
Essential Books for Mastering PLC （Download eBook link） PLC is an industrial microcomputer. When it malfunctions, the first step is to determine whether the issue lies with the PLC itself or the peripheral devices. If the PLC has a problem, the ERR light will often illuminate, or a red light will flash. The normal state … Read more
Friends who do automation debugging or maintenance have likely encountered this scenario: the PLC suddenly lights up a red alarm, the screen flashes unfamiliar codes, and in a panic, you frantically flip through the manual, only to find yourself more confused. In fact, most mainstream PLCs come with a built-in “self-diagnosis” function. The key to … Read more