摘 要随着改革的不断深化,社会主义市场经济的不断繁荣和进展,大中小城市都在进行亮化工程。企业为展现自己的形象和产品,一般都会采纳通过霓虹灯广告屏来这种广告手法，所以当我们夜晚走在大街上,公路两旁各色各样的霓虹灯广告随处可见,一种是采纳霓虹灯管做成的各种形状和多种彩色的灯管,另一种为日光等管或白炽灯管作为光源,另配大型广告语或宣传画来达到宣传的效果，大部分是采纳霓虹灯。这就涉及到如何去控制霓虹灯的亮灭、闪耀时间及流动方向等诸多控制问题，如何去快捷、可靠、简单的去控制，成为人们考虑的重点，在这我认为 PLC 最适合去解决这些问题，因为 PLC 具有通用性强、使用方便、适应面广、可靠性高、抗干扰能力强、编程简单等特点。并且 PLC 在工业自动化控制特别是顺序控制中的方面具有比较突出的优势，在现实中人们也是多通过 PLC 去控制霓虹灯的。关键词：西门子 S7-200 霓虹灯 进展潜力AbstractCeaselessness reforming subsequently is thorough, the socialist market economy ceaselessness prosperous and develops, big middle-sized and small cities spend a project all in the light being in progress. Enterprise is to display self image and the product , the general city is adopt to do this advertisement by neon sign screen therefore gimmick, thinking that we walk in night on the main street, the miscellaneous neon sign of both sides of the street can be seen everywhere. This deals with a lot of control problems such as go out , evasive bright time and the direction being on the move how to go to control a neon right away , how to go and go and controlling rapid , reliable , simple , become the priority that people considers, I think that PLC is be fit to go and resolve these problems , strong , use face to go to the lavatory , adapt to because of PLC has General Availability most broad , the high , anti-interference ability of reliability is strong , the programming waits for a characteristic simplely in this. And PLC contr...
