Introduction In the world of PLC programming, do you often encounter the frustration of completing the same task in a day while others finish it in half a day? In fact, aside from differences in software proficiency, the correct methods and tool usage habits are often the key to efficiency gaps. Today, we will share … Read more
Today, I would like to share some experiences and advice from an expert regarding learning PLC programming! 1. Learning PLC programming requires strong willpower and sufficient patience Everyone has their strengths. Some people view programming as a tedious and lengthy task; others see it as an interesting intellectual game. When I see symbols arranged neatly … Read more
Many people feel overwhelmed when they first encounter the extensive command codes in PLC programming, thinking it’s too abstract and difficult to learn. In fact, PLC programming is like ‘building blocks’; beginners do not need to learn complex commands first. By starting with ‘three basic steps’, one can write simple control programs (such as motor … Read more
01 Introduction In the world of PLC programming, data conversion is like an indispensable “translator”. Whether it is the 4-20mA current signal from sensors, floating-point data exchanged by communication devices, or parameters in different formats stored in memory, they all need to be standardized through a conversion “language” to be accurately recognized and processed by … Read more
The differences in programming approaches between PLC engineers in Germany and China are primarily reflected in technical concepts, development processes, tool usage, industry standards, and cultural backgrounds. Germany has a deep-rooted industrial automation culture and rigorous engineering practices, while China has rapidly developed in this field in recent years but started later, leading to significant … Read more
Design of a Temperature Control System Based on Siemens S7-200 PLC ——Graduation Project Sharing Includes: Design documentation; Program; Circuit diagram Abstract Currently, the Siemens S7-200 PLC is widely used in the industrial control field due to its small size, light weight, and powerful logical operation capabilities. This paper designs a PID temperature control system based … Read more
Why should M and T be avoided in PLC programs? The core logic of programming standardization. 1. Fundamental Flaws of Global Variables In PLC programming, global variables such as M (memory relay) and T (timer) are widely used but have inherent weaknesses: unclear ownership and a scope that covers the entire program. The M and … Read more
With over 10 years in the non-standard automation industry and having handled hundreds of PLC projects, ranging from standalone devices to complete line integration, and from simple logic to complex algorithms, I can reflect on the fact that the highest technical barrier is indeed programming—ladder diagrams, structured text, and function blocks, each requiring a solid … Read more
1. Function Block(FB) Introduction The Function Block (FB) is an important component in the programming of Omron NJ series PLCs, allowing reusable code logic to be encapsulated as independent modules. Function blocks can contain input variables, output variables, input/output variables, and internal variables, written in Structured Text (ST) language, greatly enhancing the readability and maintainability … Read more
Nowadays, every household has a computer, and without it, our work and life would be affected. For computers, the performance-impacting hardware mainly falls into three categories: CPU, graphics card, and memory. Due to the global pandemic affecting the shipment of graphics cards, along with the prevalence of mining activities, graphics cards have shown unhealthily high … Read more