It is well known that industrial production and technological development rely heavily on the automation control provided by PLCs. A PLC can be broadly understood as a centralized relay extension control cabinet. In practical production applications, PLCs significantly reduce the costs of industrial control and enhance centralized management and automatic control of equipment. To master … Read more
Essential! PLC Program Version Management and Documentation Standards for Clear and Controllable Projects! Do you remember the first time I faced that large filling line renovation project? At three in the morning, the production line was down, the client was standing behind me, and I was desperately comparing three different versions of the PLC program, … Read more
Programming Recommendations 1. When a PLC and a host computer (or touch screen) form a monitoring system, it is often necessary to have control modes such as “Manual” and “Automatic” on the screen (generally, only one can be active at a time). In the program, you can use the “MOV” instruction. For example: when “Manual” … Read more
“PLC Data Storage Crisis: Cloud Solutions Reduce Failure Rates by 80%! Industrial Storage Secrets Revealed” Hello everyone! Today, I want to share a “lifesaving” solution for industrial control professionals — PLC data cloud storage! Do you often encounter these frustrating issues? The device data fills up the local card, and when you want to check … Read more
In the field of industrial automation, DCS (Distributed Control System) and PLC (Programmable Logic Controller) are the two most common control systems. Although they overlap in certain functionalities, their design philosophies, architectures, and application scenarios differ significantly. This article will detail their differences and help you understand how to choose the appropriate control system. 1. … Read more
The S7-1200 CPU provides up to 6 (1214C) high-speed counters, which count independently of the CPU’s scan cycle. The measurable single-phase pulse frequency is up to 100KHz, and for quadrature or A/B phase, it is up to 30KHz. In addition to counting, it can also be used for frequency measurement. The high-speed counter can be … Read more
This article introduces the application of Siemens S7-1500 PLC in the control system of spray painting robots and hanging walking mechanisms. It describes the successful implementation of key functions from both hardware and software design perspectives, combined with on-site debugging examples. 1. Project Introduction In recent years, robotic automated spray painting systems have been widely … Read more
Recently, I heard a real story that made me furious. A friend who is an electrician said he wanted to learn PLC (Programmable Logic Controller), but he was ridiculed by those around him: “With your level, you want to touch automation? You are overestimating yourself!” Honestly, hearing this made me both angry and amused. As … Read more
Introduction: From Troubleshooting to Skill Transfer I still remember fifteen years ago when I first independently dealt with a PLC fault in an injection molding machine. It was three in the morning, the production line was down, and the manager called anxiously: “Lao Wang, hurry up! The whole line is stopped!” Standing in front of … Read more
1. Content of PLC Programs PLC application programs should maximize the control requirements of the controlled object. After conceptualizing the framework of the main program, it should serve as the main line, with each control function or sub-task program written one by one. Through continuous adjustments and improvements, the program should be able to complete … Read more