🔥 What Are the Limits of Traditional Logic Programming? The Magical Charm of Finite State Machines! Is your PLC program bloated due to complex process flows? Difficult to debug? Frequent failures? Is every upgrade like defusing a bomb? Today, I will reveal a programming tool known as Finite State Machine (FSM) that will help you … Read more
1. Bidirectional Movement of the Cart Implement automatic control of a cart moving back and forth using S7-200. The control process involves pressing the start button, causing the cart to move from left to right (and vice versa). When it reaches the right (or left) limit switch, the cart automatically returns. This back-and-forth movement continues … Read more
Intermediate PLC Programming: Interrupt Priority Design for Timely Response to Critical Tasks! Introduction Hello everyone! Today I want to share a magical technique that can make your PLC program “perceptive” — interrupt priority design. Don’t worry about the technical jargon; I will explain this seemingly profound concept in the most relatable way. By mastering this … Read more
In PLC programming, the physical contact of the stop button is generally connected as normally closed, while in the program, it is written as normally open. This type of stop button only serves as a signal in this equipment.Why is the emergency stop in PLC programming opposite to that of a regular emergency stop button? … Read more
In PLC programming, the positive edge and negative edge are key signal characteristics that trigger logical operations. They are commonly used to avoid signal jitter, achieve precise counting, or control execution order. If not mastered, their usage may lead to program logic confusion, false triggering, or functional failure. The following analysis covers principles, application scenarios, … Read more
JZGKCHINAIndustrial Control Technology Sharing Platform Introduction As a PLC (Programmable Logic Controller) engineer, we face numerous complex control systems and engineering problems every day. Some of these issues may arise from equipment failures, while others may be due to process inefficiencies or improper program design. Regardless of the situation, we need to address and resolve … Read more
Introduction Having a faulty output point in a PLC is a troublesome event, but there are several solutions available. For instance, writing an IO mapping in the program is a great idea.As an important component of PLC programs, the design quality of IO mapping directly affects the maintainability and scalability of the program.By implementing IO … Read more
Intermediate PLC Programming: Indirect Addressing Technology for More Flexible and Efficient Array Processing!🔥 The challenges of traditional array processing, the efficiency black holes you might be overlooking! Have you encountered these issues in PLC programming: fixed array structures that are difficult to expand? Low data retrieval efficiency, slow program response? Wasted memory resources, high costs … Read more
Step control in programming is a very common control method in industrial automation, suitable for sequential execution of process flows. Unlike continuous control, step control allows industrial processes to execute in predetermined steps, ensuring that each process action is completed at the correct time. This article will detail seven practical programming methods for step control, … Read more
PLC Program Version Management: The End of Code Chaos, Maintenance Efficiency Soars by 300%! Last year, a certain automotive factory’s production line suddenly went down. Maintenance personnel spent three days and nights troubleshooting, only to discover that an old version of the program from two months ago had been mistakenly overwritten, causing logical errors in … Read more