Sifang’s Autonomous and Controllable Industrial Control System Achieves New Success

Recently, Sifang Co., Ltd. won multiple bids for autonomous and controllable industrial intelligent control system projects—— Hubei Xinjie Hydropower Station PLC monitoring system, Xinjiang Momok Water Conservancy Hub PLC monitoring system, Zhejiang Cixi Hydrogen Energy PLC control system, Hebei Zhitu and Derun New Energy phase-shifting DCS, Beijing Panggezhuang heating gas boiler DCS, and Liaoning Jiagelong … Read more

PLC Ladder Diagram and HMI Interaction Design Methods

Click the blue text for more exciting information I have been in the PLC industry for nearly 20 years, working on the front lines. To be honest, seeing those freshly graduated young people programming makes me laugh. They hold onto a pile of theories talking about control algorithms, yet they can’t even understand a simple … Read more

Design Principles and Reusability Strategies for Converters in PLCs

Click the blue text to follow! PLC Old Li Talks Technology: What’s So Difficult About PLCs? Discussing Those Pitfalls from a Practical Perspective Last week, Xiao Zhang rushed over to me, saying: “Old Li, the production line 3 has stopped again, the system is alarming, and I’ve been looking at it for a long time … Read more

PLC Data Consistency: Transaction Processing Mechanism to Ensure Operational Atomicity!

PLC Data Consistency: Transaction Processing Mechanism to Ensure Operational Atomicity! Introduction Hello everyone! Today we are going to discuss a crucial yet often overlooked topic in industrial automation — PLC data consistency. Imagine, when your production line is executing a critical operation, and suddenly there is a power outage, what happens to the data?Don’t worry! … Read more

Standardization of PLC Programming: Norms and Best Practices for Ladder Diagrams

I remember when I first started in the industry, I took over a PLC program left by a former colleague, and it was a complete mess! There were no comments, variable names were arbitrary, and the program structure was chaotic. It took me three whole days to understand this program. This is why today I … Read more

PLC Data Types and HMI Interaction Design Methods

Click the blue text for more exciting information Having been in this industry for over a decade, I must say, I get really frustrated when I see new electrical engineers designing PLC systems. Especially when it comes to data types, many have no concept at all, just copying a few lines of code from the … Read more

PLC Data Mapping: Memory Mapping Configuration Techniques for Efficient Communication Data Processing!

PLC Data Mapping: Memory Mapping Configuration Techniques for Efficient Communication Data Processing! Introduction **Hello everyone!** Today, I want to share a secret that can significantly boost the efficiency of PLC communication—memory mapping configuration techniques. Don’t be intimidated by this technical term, I will explain this powerful feature in the simplest way possible. **Mastering this method … Read more

Fundamentals of PLC Programming: A Beginner’s Guide to Data Types

Fundamentals of PLC Programming: A Beginner’s Guide to Data Types Author: Electric Guy | 15+ years of frontline engineering experience I’ve been asked a lot of questions about PLC data types by beginners, it’s really frustrating! Honestly, isn’t this just the most basic thing? Today’s electrical novices are really falling behind, they can’t even distinguish … Read more

Design Methods for PLC Hardware and HMI Interaction

Recently, while debugging a production line at a beverage factory, operator Lao Wang complained, “This touchscreen is too difficult to use, the button positions are unreasonable, and there are frequent issues with inaccurate data display.” This made me realize that many factories face similar problems. In fact, the interaction design between PLCs and Human-Machine Interfaces … Read more

PLC System Configuration Programming: Common Mistakes and Solutions for Beginners

Recently, a young electrician came to ask about PLC configuration. Looking at his program, I was truly speechless. Today’s young people seem to just throw everything into the code without considering the basic scanning cycle. Back in the day when I started in this field, we didn’t even have decent programming software; we used old-fashioned … Read more