Search on WeChatElectrical Engineering and Electrical Learning PLC program design generally adopts the intuitive method, which is based on the learning experience of the circuit designer, making it relatively subjective and direct. It requires a period of trial and error, debugging the program until it meets the required functions or action requirements; therefore, the designed … Read more
In the previous issue, we discussed the programming applications of two languages: PLC Programming Languages: Ladder Diagram (LD) vs. Structured Text (ST) According to the voting results over the past month, it is clear that Ladder Diagram LD still occupies the largest share, followed by Structured Text ST. The specific data is shown in the … Read more
Click the blue text above to follow us The industrial automation control system is the core of modern manufacturing, and almost all production lines, equipment, and processes rely on it. A good automation control system must not only be stable and reliable but also flexible and scalable to meet the dual demands of production efficiency … Read more
Search on WeChatTechnical Training The programming languages for PLCs have distinct characteristics compared to general computer languages; they are neither high-level languages nor typical assembly languages, and they must meet the requirements of being easy to write and debug. Early PLCs only supported Ladder Diagram (LD) and Instruction List (IL) programming languages. Currently, the International … Read more
Hello, electronic enthusiasts and automation beginners! Today, we won’t talk in abstract terms; let’s get hands-on with PLC! Don’t be intimidated by the name; actually, PLC (Programmable Logic Controller) is simply a “high-level electric control switch”. However, it is much more complex than the light switch at home and can do many more things. In … Read more
Chapter 1: Introduction to PLC What is PLC? In simple terms, a PLC (Programmable Logic Controller) is a computer used for industrial automation control. It can control and monitor various industrial devices according to pre-written programs. Components of PLC: It mainly includes the CPU (Central Processing Unit), input modules, output modules, power supply modules, and … Read more
Hello everyone, I am Lao Wang, an experienced engineer in the automation industry. Today, let’s talk about PLCs, which are the core of the automation field, just as important as the light switch in our homes. However, instead of controlling a simple light bulb, it controls various complex industrial devices. The goal of this article … Read more
The PLC control circuit for the cement mixer is shown in the figure. This article only presents the control circuit diagram and ladder diagram of the PLC. The main circuit controls the operation of the water pump, material pump, and mixing pump with overload protection through a variable frequency drive. The water pump is a … Read more
PLC Control System Schematic unset unsetOpening Introductionunsetunset Hello everyone, I am Dou Dou! Today we are going to open the magic box of the PLC world. Imagine the robotic arms in factories can precisely grab parts, and automatic doors can sense pedestrians to open and close. All these magical operations are silently commanded by PLCs. … Read more
Search on WeChat Technical Training 01 Car Forward and Backward Movement Using S7-200 to achieve automatic control of the car moving back and forth. The control process is pressing the start button, the car moves from left to right (and back from right to left). When it reaches the right (or left) limit switch, the … Read more