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
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
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
Introduction In the field of industrial automation, Programmable Logic Controllers (PLCs) serve as core control devices, and their stable operation directly affects production efficiency and equipment safety. However, various failures are inevitable during long-term operation. Today, PHM has compiled information on common types of PLC failures, their causes, and quick handling methods, hoping to assist … Read more
Last week, I helped a colleague solve a problem with his temperature control system on the production line, which was frequently malfunctioning. After some investigation, it turned out that the variable type was not selected correctly, causing the decimal part to be truncated. This incident reminded me that we must discuss the topic of variable … Read more
PLC Data Conversion: Data Format Conversion Technology to Solve Heterogeneous System Interaction Issues! Introduction Hello everyone! Today we are going to talk about a magical technology that allows different brands of PLCs to “shake hands”—data format conversion! In factory automation, have you ever encountered the awkward situation where Siemens PLC and Rockwell PLC “speak different … Read more
Click the blue text for more exciting information Having worked in this field for 15 years, today let’s talk about the PID controllers in PLCs that many find confusing. Many beginners get a headache just hearing about PID, and to be honest, many veterans also struggle to understand it. This thing looks simple, but using … Read more
After two hours of on-site rush, I found that the PLC program just wouldn’t download! This was a common predicament I faced when I first started in the industry. If you are about to get into PLCs, make sure to get the “environment setup” right to avoid unnecessary detours. Today, let’s discuss the configuration and … Read more
PLC Power-Up Sequence: Correct Power-Up Steps to Avoid Initialization Errors! 🔥 The Fatal Consequences of Improper Power-Up You May Have Overlooked! Does your PLC device occasionally malfunction during power-up? Is the program running abnormally? Does it even cause the entire production line to stop? Stop Ignoring These Small Issues! Today, I will reveal a correct … Read more
3. Processing Axis SignalsIn the CMVM PLC program, there are multiple corresponding FB blocks for the machine tool axes, but these FB blocks are actually a single FB block with different names.OB1 calls FB130, which in turn calls the FB block that processes each axis signal, along with FB139 (which handles the axis selection keys … Read more