"基于PLC的霓虹灯控制设计研究"

花， and development, large, medium and small cities are all carrying out lighting projects. Enterprises generally use neon advertising screens to show their image and products. Therefore, when we walk on the streets at night, we can see neon advertising screens of various shapes and colors on both sides of the road. There are two main types of neon advertising screens: one is made of neon tubes in various shapes and colors, and the other is using fluorescent tubes or incandescent light tubes as light sources, combined with large advertising slogans or promotional pictures to achieve the advertising effect. Most of them use neon lights. This involves how to control the on and off, flashing time and flow direction of neon lights, and how to control them quickly, reliably and simply becomes the focus of people's consideration. In my opinion, PLC is the most suitable solution to solve these problems, because PLC has the characteristics of strong versatility, easy to use, wide adaptability, high reliability, strong anti-interference ability, and simple programming. Moreover, PLC has outstanding advantages in industrial automation control, especially in sequential control. In reality, people often use PLC to control neon lights. Keywords: Siemens S7-200 neon light development potential.