Practical tips for daily applications of PLCs, hoping to assist everyone in their routine use of PLCs.1Grounding Issues The grounding requirements for PLC systems are quite strict; it is best to have a dedicated grounding system, and attention should also be paid to ensuring that other devices related to the PLC are reliably grounded. When … Read more
On August 20, the Ventilation Team organized a seminar for all monitoring and control personnel to discuss on-site issues and usage precautions related to the monitoring system sensors. The meeting focused on key challenges and difficulties in sensor operation and maintenance, further standardizing operational procedures and enhancing the ability to address on-site issues. During the … Read more
This is specifically designed for those aiming for Linux operations positions in major companies, featuring10 in-depth interview questions covering high-frequency topics such as fault diagnosis, architecture design, and kernel principles, along with problem-solving approaches and bonus tips: 1. Fault Diagnosis: When the TCP half-connection count of an online server surges to over 50,000, how to … Read more
Introduction: During the interview process for electrical engineers, many companies exhibit a phenomenon: whether it is HR or technical leaders, they measure the level of PLC engineers based on the number of points they have worked on in projects.Some HR personnel often ask questions like “What is the maximum number of points in the projects … Read more
◆◆Mercedes-Benz E200 Air Conditioning Not Cooling◆◆ (1) Failure Symptoms The chassis model of this vehicle is W211, equipped with an M272 engine. The air conditioning system is not cooling, and the two air outlets in the center of the dashboard are not blowing air, while the side outlets are blowing hot air. (2) Diagnosis and … Read more
Please follow the WeChat subscription account “Finger Motorcycle” to read the latest information on motorcycle maintenance and repair. Search for ID mscmoto directly in WeChat to follow! The repair process for this motorcycle began ten days ago. A customer came to the shop asking for help with an EFI motorcycle that had no spark from … Read more
Methods for Testing the CAN Bus① Before checking the data bus system, ensure that all electronic control units (ECUs) connected to the data bus are free of functional faults. A functional fault refers to a failure that does not directly affect the data bus system but impacts the functional flow of a specific system. For … Read more
I still remember that hot summer three years ago when I received what seemed like a simple project—designing a constant pressure water supply system for an industrial park. At that time, I thought, isn’t it just a variable frequency drive paired with a few water pumps? Little did I know that this would take three … Read more
PLC Simple methods for modifying and debugging PLC programs 6 comprehensive causes of PLC failures, easily resolved! Animated working principles of classic PLCs and sensors 7 methods to quickly resolve PLC failure issues PLC | S7-200 smart program viewing and writing Simple methods for modifying and debugging Siemens PLC programs Allen-Bradley (AB) PLC program detection … Read more
Fault Diagnosis: Common Causes of Siemens PLC Program Freezing and Quick Troubleshooting Methods As an automation engineer, I cannot count how many times I have been called to the site to handle the issue of “the equipment suddenly stopped working.” In most cases, this is related to the PLC program freezing. Today, I will share … Read more