1. Background of ConsiderationRecently, I used the Hechuan M500S to create a single-station hinge drill, and the results were quite good. This led me to wonder if I could continue using the M500S for a wired dual-station hinge drill.2. Detailed Analysis2.1 Hardware LevelThe single-station hinge drill used two EtherCAT servos, while the wired dual-station hinge … Read more
1. PLC Control Motor Start and Stop Circuit 2. Wiring Relationships of PLC Inputs and Outputs 3. Working Principle of Frequency Converters 4. Switching Circuit Between Frequency Converter and Power Frequency 5. Control Circuit for Switching Between Frequency Converter and Power Frequency Mode 6. How to Connect PLC with Frequency Converter 7. Wiring Diagram for … Read more
For automation beginners, it is inevitable to face some PLC programming questions during job interviews. Although they are not difficult, analyzing tasks and writing programs according to requirements in a short time can be quite stressful. Below are several typical PLC cases for your reference! (1) Traffic Signal Arrangement at an Intersection 1. Control Requirements … Read more
Introduction: PLC – The “Nervous Center” of Industrial AutomationIn the modern industrial system, the Programmable Logic Controller (PLC) is hailed as the “nervous center of industrial equipment”. Its core function is similar to that of an intelligent control system in a car: just as a driver conveys commands to the car through the steering wheel … 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
Learning about PLCs is not enough if you only understand the PLC itself. The PLC is the “brain,” while the peripheral devices are its “eyes, ears, hands, and feet.” A qualified automation engineer must be proficient in how these peripheral devices work in conjunction with the PLC. Below are the core peripheral devices that one … Read more
Hello, welcome to the IoT Planet! If you have an IoT project, look for IoT Planet! The planet focuses on sharing and communication of IoT technology, applications, and products, providing project implementation planning, product selection recommendations, custom development, and other services. In the era of the Internet of Everything, industrial sites are still filled with … Read more
Today, I am sharing a set of course materials on the basics of PLC (Programmable Logic Controller). The main content is as follows, and I hope it can help you.
As of now, there is no strict boundary between DCS and PLC. In the eyes of most people, large systems are referred to as DCS, while smaller systems are called PLC. Of course, this statement is not entirely incorrect, but it is also not entirely accurate. Let us redefine this concept. First, what are the … Read more
