In the field of industrial automation, the journey from an ordinary electrician to a senior PLC engineer is a career path filled with challenges and opportunities. Today, we will analyze the various stages of this promotion path, the required skills, and salary levels, providing a reference guide for those striving on this path. Stage 1: … Read more
(Thanks to everyone for your likes and appreciation. If this article resonates with you, please “like” and “recommend”, thank you all!) Article Overview A few days ago, while debugging equipment, the CPU module of a running S7-1200 PLC suddenly crashed. After powering it back on, it reported an error, and the SF light remained on, … Read more
In September 2025, the students of our school’s third cohort of the ‘Embedded’ joint training class, carrying their thirst for knowledge and the expectations of the college, embarked on a year-long study journey to North China University of Water Resources and Electric Power. The College of Electrical Engineering held a mobilization meeting to ensure the … Read more
“The other day, I took on a repair job; the PLC fault light was on. I pretended to be busy all day, and when everyone left at night, I rebooted the PLC and pocketed 2000. Hehe…” That night, during a dinner gathering, it was anything but a casual dinner; everyone raised their glasses and chatted … Read more
PLC Programming Algorithm (1) In PLC programming, there are mainly three types of quantities:Digital, Analog, and Pulse. Understanding the relationship between these three will help you master PLCs proficiently. 1. Digital Quantity is also known as logic quantity, which has only two values: 0 or 1, ON or OFF. (Digital quantities have only two states … Read more
Content Overview The frequency converter is an electrical device. For safe operation, ensure that the frequency converter is powered off, and wait for more than 5 minutes after disconnection. Additionally, the input power lines R, S, T and output lines U, V, W must be removed before proceeding! ▲ Frequency Converter Main Circuit Diagram Module … Read more
How to learn PLC may be a confusion for many beginners, and choosing which brand of PLC is even more difficult. As someone who has been through it, I would like to provide some direction for all the newcomers. Let’s learn and strive together. HAPPY NEW YEAR Prerequisites for Learning PLC Love the profession you … Read more
Features of PLC Control System Ladder Diagrams 01 Input Signals and Output Loads of PLC Control Systems The output relays of the PLC control the actuators in the relay circuit diagram, such as AC contactors and solenoid valves, with their coils connected to the output terminals of the PLC. Buttons, control switches, limit switches, proximity … Read more
The most frequently used PLC programming languages currently are Structured Text and Ladder Diagram. For technicians with little foundation, starting to learn PLC programming from Ladder Diagram is the quickest. Regardless of the PLC brand, the structure of Ladder Diagrams is very similar to actual electrical control circuits. Below, we recommend several commonly used control … Read more
Search on WeChatTechnical Training Today, we bring you the wiring methods for sensors and PLCs, with twenty wiring diagrams. Isn’t that rich? Let’s take a look! 1.Overview The digital input interface of the PLC is not complex. To improve anti-interference capability, PLCs use optocouplers to isolate the input signals from the internal processing circuits. Therefore, … Read more