Situation 1: Slave Loses Synchronization Causes: 1. The EtherCAT task may be experiencing excessive jitter; 2. There may be issues with the network cable, such as using unshielded cables or poor connections; individual slaves may also have problems. Exclusion of Possible Causes: ① Check the logs; if the following log entries are present, it indicates … Read more
In Linux system operations, process management is an important part of daily operations. System administrators often need to find abnormal processes, terminate unresponsive services, or clean up processes that consume excessive resources. This article will systematically introduce practical methods for finding and terminating processes in Linux, based on real operational scenarios. 1. Methods for Finding … Read more
In today’s rapidly evolving embedded technology landscape, going solo is outdated; technical forums have become the “second brain” for embedded engineers. Whether it’s unresponsive code, elusive hardware, or stalled projects, there is always a group of enthusiastic experts in the forums ready to help you turn the tide. 💡 🔧 Why Embedded Engineers Can’t Live … 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
There are mainly two types of remote controls for TVs or TV boxes at home: one is infrared remote controls, and the other is Bluetooth remote controls. If a Bluetooth remote control is damaged, discarding it and purchasing a new one can be significantly more expensive than an infrared remote control. This article shares methods … Read more
“The other day, I took on a repair job; the PLC fault light was on. I pretended to be busy all day, and when everyone left at night, I rebooted the PLC and pocketed 2000. Hehe…” That night, during a dinner gathering, it was anything but a casual dinner; everyone raised their glasses and chatted … Read more
RS485 is Not a Language, But a ‘Highway’ Let’s use a vivid analogy to understand: RS485: It is like building atwo-way, two-lane highway. It specifies how wide this road is (transmission distance, up to 1200 meters), how many vehicles can run simultaneously (load capacity, up to 128 devices), and the basic rules for vehicle operation … Read more
Detecting car battery drain with a multimeter Step 1: Disconnect the negative terminal of the battery. Step 2: Insert the red probe of the multimeter into the 20A current socket and set the dial to DC 20A. Step 3: Connect the probes as shown in the image above, with the red probe touching the battery … Read more
1. CPU Abnormality When a CPU abnormality alarm occurs, check all devices connected to the internal bus of the CPU unit. The specific method is to replace the potentially faulty units one by one to identify the faulty unit and take appropriate action. 2. Memory Abnormality When a memory abnormality alarm occurs, if it is … Read more
QA& Question: How to fix incorrect readings on a multimeter When using a multimeter to read voltage, you may notice that the voltage readings fluctuate wildly or are incorrect on a known voltage source. This is often a sign that the internal fuse has blown. At this point, you need to test the fuse for … Read more