摘 要随着国家的不断改革与进展，市场经济的不断繁荣和进步，各大城市都在进行亮化工程。各大中小企业为了宣传自己的企业产品，基本上均采纳霓虹灯广告屏来作为广告手法。每当夜晚，城市里的霓虹灯绝对是一大亮点，它点燃了城市的灵魂与希望。道路两旁的霓虹灯广告牌随处可见，各色各样，十分好看和吸引人。在给它们配上大型的广告语和宣传画，使人一目了然，印象深刻。这些霓虹灯的亮灭，闪耀时间的长短和灯光流动的方向等等都可以通过 PLC 来达到控制要求。如何快捷，可靠，简单的去达到控制的目的，是人们考虑的重点。而 PLC 控制系统无疑是最适合的。因为 PLC具有通用性强，使用方便，适应面广，可靠性强，抗干扰能力强，编程简单易懂等特点。并且 PLC 在工业自动化控制特别是顺序控制中的地位，也是无法取代的。在现实生活中，人们也大多是通过 PLC 去控制霓虹灯的。关键词：西门子 S7-200；亮化工程；霓虹灯；祈福雅安ABSTRACTWith the reform and development of the country, rising prosperity and progress of market economy, big cities are in the rope. Each medium enterprises to promote their own products, basically all use neon advertising screen for advertising. Whenever the night, the city of neon lights is definitely a highlight, it lit the city soul with hope. Neon signs on both sides of the road can be seen everywhere, various, is very nice and attractive. In them with large slogans and propaganda, make the person be clear at a glance, impressive. Length of destroy the light of the neon lights, flashing lights and the direction of the flow and so on can be controlled by the PLC to achieve the requirements. How fast, reliable, easy to achieve the purpose of control, is the focal point that people consider. The PLC control system is undoubtedly the most appropriate. Because PLC has strong commonality, use convenient, adaptation of wide, reliability and anti-interference ability strong, programming of simple features. And PLC in industrial automatio...
