Recently, I have dedicated all my time to writing practical tutorials on Structured Text (ST). Why write another book titled “Practical Guide to PLC Programming in Structured Text Language”? In this process, I strive for more data collection and organization, refining each chapter based on my own experiences and summaries. To document the entire process, … Read more
Electrician Vocational Skills Level Certificate Examination Study For the “Electrician” Level 2/Technician Learning Examination, the key learning points for PLC controllers can be focused on the following key areas: 1. Basic Principles and Structure of PLC Working Principle: Understand the cyclic scanning working method of PLC, including input sampling, program execution, and output refresh stages, … Read more
The term “robot” originates from the 1920 play “R.U.R.” (Rossum’s Universal Robots) by Czech writer Karel Čapek, meaning “forced labor.” Today, it has transitioned from science fiction into reality, profoundly changing our modes of production and lifestyle. The history of robot development is a technological epic of humanity combining imagination, engineering, and artificial intelligence. I. … Read more
Embedded engineers who only know how to write code are like architects who cannot read blueprints in the field of industrial control—no matter how well the code runs, they will still be flustered when the equipment starts operating. 1. Embedded Engineers Should Learn Industrial Control!Industrial environments do not recognize ideal conditions: electromagnetic interference, temperature fluctuations, … Read more
Stepper motors are commonly used for positioning control, and their rotation angle (which can also be considered as distance) is controlled by the number of pulses output from the PLC. The frequency of the pulses controls the speed of the stepper motor. For applications where control precision is not critical, this method is simple, economical, … Read more
Design of a Smart Home Control System Based onPLC Abstract With the rapid development of science and technology, the development of smart homes has received more attention. Existing smart home products have incomplete functions, complex data transmission, and are difficult to meet family needs.This project is based on this, and it details the design of … Read more
As an important component of transportation and logistics, tunnels operate in unique environments that impose high demands on the stability, adaptability, and safety of control systems. Tunnel-specific PLC control cabinets are one of the core devices for tunnel monitoring and management, and the customized development of their internal programs is a key step in ensuring … Read more
In semiconductor factories, the Facility System plays a crucial role in maintaining a clean environment, ensuring process safety, and providing stable energy and auxiliary utilities. As equipment structures become increasingly complex and environmental control requirements continue to rise, a responsive, clearly structured, and efficient facility monitoring system becomes particularly important. To address this need, the … Read more
Category 1: Basic Data Processing and Algorithms This type of algorithm is fundamental to programming, but in microcontrollers, special attention must be paid to efficiency and resource usage. Lookup Method Trigonometric Functions: For example, calculating sin/cos values when displaying waveforms. Non-linear Calibration: Such as temperature compensation for thermocouples and non-linear correction for sensors. Encoding and … Read more
1. Classification System of Logic Operation Instructions 1. Basic Logic Instructions AND Logical AND Multi-condition alarm (Pressure + Temperature > Threshold) OR Logical OR Any fault triggers shutdown XOR Logical XOR Parity check INV Negation operation Inversion of sensor signal 2. Bit Operation Instructions BSET Bit Set Individually control the status of a device BRST … Read more