Introduction In the field of industrial automation, Programmable Logic Controllers (PLCs) serve as core control devices, and their stable operation directly affects production efficiency and equipment safety. However, various failures are inevitable during long-term operation. Today, PHM has compiled information on common types of PLC failures, their causes, and quick handling methods, hoping to assist … Read more
After two hours of on-site rush, I found that the PLC program just wouldn’t download! This was a common predicament I faced when I first started in the industry. If you are about to get into PLCs, make sure to get the “environment setup” right to avoid unnecessary detours. Today, let’s discuss the configuration and … Read more
Click the blue “Programmer DD” above and select “Add to Favorites” Reply with “Resources” to get exclusive learning materials! Source | 8rr.co/4zhkWhether in backend or frontend development, we all encounter different HTTP status codes. Some common status codes include: 200 – The server successfully returned the webpage 404 – The requested webpage does not exist … Read more
Have you ever pressed the power button and found yourself staring at a waterfall of code on the screen, feeling helpless? It’s like a car dashboard going haywire when the engine won’t start; the command line prompts during a Linux boot failure can often leave newcomers feeling overwhelmed. Today, we will dissect the ignition process … Read more
🔥 When you see the output of <span><span>ip a</span></span>, are you confused by the mysterious parameters like <span><span>LOOPBACK</span></span>, <span><span>fq_codel</span></span>, and <span><span>metric 100</span></span>? 🔥 This article uses real terminal output examples to analyze the meaning of each parameter line by line and reveals how to diagnose network issues using them!🚀 At the end of the article, … Read more
Follow “Java Matters” and select “Star” to receive a free Java book package, whether you are a newcomer or an experienced developer in this new era.Source: Online. When your server’s CPU reaches 100%, how do you troubleshoot the abnormal fault? At the end of this article, a shell script will be shared to help you … Read more
A multimeter is the preferred tool for electricians to troubleshoot faults. For many electricians, short circuit faults are easy to check with a multimeter, but finding breakpoints is not as straightforward. Today, I will share a method for using a multimeter to check for wire breakpoints. The steps are as follows:1. Connect one end of … Read more
1. Correct Use of the Multimeter To use the multimeter correctly, familiarize yourself with the dial. Adjust the two zero position regulators gently. Choose the correct terminals, ensuring the red and black probes are inserted into the right holes. Turn the switch to the correct range. Select the appropriate measurement range for accurate readings. Ensure … Read more
Search on WeChatElectrician and Electrical Learning As a maintenance electrician, it seems unreasonable or even impossible to not come into contact with PLCs in automation control. Nowadays, some manufacturers of electrical cabinets try to equip even a simple start-stop circuit with an unknown PLC to appear more advanced and align with international standards. You can … Read more
Guide to Troubleshooting Industrial Communication Protocols: EtherCAT vs Profinet 0 ▲ A High-Frequency and Underestimated Technical Blind Spot: Port Configuration Errors When Switching Communication Protocols As a veteran in industrial control for ten years, I have seen too many engineers stumble during the selection and debugging of communication protocols. Especially when switching from Profinet to … Read more