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
Stop struggling with complex PLC logic and typing code line by line! Here’s a secret: your programming “superhero” teammate is now online! When the German industrial powerhouse — Siemens S7-1200 PLC meets the domestic AI “strongest brain” — DeepSeek, a revolutionary programming transformation is taking place. This is not just talk! I will guide you … Read more
Hello everyone! Recently, a friend asked me why the Modbus communication between the PLC and the inverter was not working despite following numerous tutorials. I remember when I first started, I was just as confused, struggling with the wiring diagrams and making several mistakes in parameter settings before finally succeeding. Today, I will share the … Read more
Recently, a project owner required MODBUS TCP/IP, with hardware consisting of S7-1200 and KTP1200 panel. The owner was unable to provide the IP subnet during the project implementation phase, thus a solution was needed to modify the PLC and panel IPs on-site:This can be divided into three steps: modifying the PLC IP, modifying the connection … Read more
Understanding constants and their use in PLC programming is crucial for professionals working with S7 controllers. This article will provide you with the necessary knowledge and skills to utilize constants in PLC programs according to your needs. As a practitioner aiming for proficiency, you should learn about the types of constants to enhance program readability … Read more
In automation control systems, the operating status of each device follows a certain action logic, just like tasks need to be performed in a specific order to maintain clarity and organization. For the action process of devices, we can define and manage it through register values. Each action of the device corresponds to different state … Read more