Hello everyone, I received a submission from a fan who mentioned seeing the RETURN instruction used in someone else’s program and asked me to explain its usage. As the name suggests, RETURN means to return. In a program, it is used to control the execution flow, returning to the point of the higher-level call. When … Read more
Reducing Energy Consumption in IoT Applications Using PLC State Diagrams A few days ago, an old client called me, complaining that their factory’s electricity consumption was unacceptably high. Without hesitation, I grabbed my toolbox and headed over. Upon entering the factory, I saw the equipment running at full power, even in areas where no one … Read more
PLC Hardware Installation: Dust and Moisture Prevention Measures for Stable Operation in Harsh Environments! Introduction Hello everyone! Today, I want to share a crucial yet often overlooked topic in the field of factory automation—dust and moisture prevention techniques for PLCs. Don’t underestimate these details, as they often determine whether your PLC can operate stably in … Read more
When you first enter the industry, facing a dazzling array of PLC brands, do you feel as lost as a headless fly? “Which one is more stable?” “Which offers better cost performance?” “How do I choose between domestic and imported options?” These questions kept me awake at night. To find answers, I scoured materials, compared … Read more
Hello everyone, I am Yang. Today I want to discuss a very practical topic in the field of industrial automation – the integration of PLC and MES systems. Many factories face the challenge of relying on manual recording for equipment data collection and using Excel spreadsheets for production planning, leading to low workshop management efficiency. … Read more
Click the blue text to follow! Old Li Talks About PLC Function Block Programming: Making Devices “Understand Each Other” A few days ago, Xiao Wang asked me: “Old Li, why can’t our new Siemens PLC connect with that Japanese Mitsubishi one? I followed the manual, but it seems like the devices can’t ‘understand’ each other.” … Read more
Click the little blue text to follow! Practical Troubleshooting of PLC Instruction Tables in Data Acquisition Last Friday, the newly installed automated production line in the workshop suddenly alarmed and stopped. Xiao Wang hurried over to find me. “Master Li, the main control computer shows no data, the program is still running but no production … Read more
Security Design Solutions for IoT Applications Driven by PLC Function Block Diagrams A few days ago, a friend involved in factory automation rushed to me, saying that their temperature control system inexplicably activated in the middle of the night, nearly causing a safety incident. After investigation, it was found that their newly launched remote monitoring … Read more
Introduction **Hello everyone!** Today, I want to talk to you about a frequently overlooked but extremely important part of PLC programming —hardware programming interfaces. “Isn’t it just about plugging in a cable?” **You might think so. But I want to tell you that **choosing the right programming interface can improve your debugging efficiency by over … Read more
★ Click the blue text above to follow ★Author: Beijing Huaxing Wanbang Management Consulting Co., Ltd. Xiangyu Shangrui As large models continue to evolve, they are pushing inference applications to edge and endpoint devices on a large scale. New AI application scenarios and models such as IoT intelligence, embodied intelligence, AI agents, and physical AI … Read more