Click the blue text to follow! Just arrived at the workshop this morning, and the equipment suddenly alarmed and stopped. Checking the fault information: Timer overflow. Our colleague Xiao Zhang scratched his head: “Isn’t it just a timer? Why does it keep having problems?” Many beginners in industrial control encounter similar situations. Today, I will … Read more
Click the blue text to follow! 10 Timer Application Practice: A Decade of Workshop Experience from an Old Electrician A few days ago, Xiao Zhang rushed to me: “Master Li, please help me check, the conveyor belt on production line three keeps stopping and starting, causing us to rework a large batch of products!” I … Read more
For more exciting content, click to follow “PLC Enthusiasts” The Siemens S7-1200 can communicate via Modbus RTU through communication modules, with the PLC serving as the controller, typically acting as the Modbus master. When functioning as a Modbus master, it generally polls parameters from multiple slave devices. This article introduces the timed polling program for … Read more
Hello, electronic enthusiasts and automation beginners! Today, we won’t talk in abstract terms; let’s get hands-on with PLC! Don’t be intimidated by the name; actually, PLC (Programmable Logic Controller) is simply a “high-level electric control switch”. However, it is much more complex than the light switch at home and can do many more things. In … Read more
There are generally two methods for implementing precise delays in the 51 microcontroller: one is hardware delay, which requires the use of timers/counters. This method can improve CPU efficiency and achieve precise delays; the other is software delay, which mainly uses loops. 1 Using Timer/Counter for Precise Delay The microcontroller system typically selects an 11.0592 … Read more
1. Contact and Coil Instructions Programming Principles of PLC Ladder Diagram Language 1. The ladder diagram consists of multiple rungs, each coil can form a rung, and each rung has multiple branches, representing a logical equation; 2. The relays, contacts, and coils in the ladder diagram are not physical but are bits in the PLC … Read more
1. Contact and Coil Instructions Programming Principles of PLC Ladder Diagram Language 1. The ladder diagram consists of multiple rungs, with each coil forming a rung, and each rung having multiple branches, representing a logical equation; 2. The relays, contacts, and coils in the ladder diagram are not physical; they are bits in the PLC … Read more
Introduction Today, we will not cover the Zigbee protocol, but rather some operations of the timer in the CC2530 microcontroller. This article uses 8-bit Timer 3 for experimentation, and other timers can be similarly applied. Through this article: You will learn some basic knowledge about timers. You will see configuration instructions for some timer registers. … Read more
❝ Introduction: This article presents a solution to implement the main functions of the 555 timer based on the DAC53701. The DAC53701 has significant advantages in signal precision. 01 DAC Replacing 555 1. Question about 555 Circuit Two days ago, I saw a student asking how to improve the precision of the square wave signal … Read more