常州工学院（成人教育）毕业设计（论文）题目用顺序功能图法实现四路抢答器的PLC控制副标题性质：毕业设计毕业论文学生姓名年级2008级教学点无锡技师学院专业工业电气自动化指导教师评定成绩优良中及格不及格摘要随着科技技术的不断发展，促使人们学习科学、技术、知识的手段多种多样。抢答器作为一种工具，已广泛应用于各种智力和知识竞赛场合。但抢答器的使用频率较低，且有的要么制作复杂，要么可靠性低，减少兴致。做为一个单位若专购一台抢答器虽然在经济上可以承受，但每年使用的次数极少，往往因长期存放使抢答器损坏，再购置的麻烦和及时性会影响活动的开展，因此设计了本抢答器。顺序功能图法是PLC程序设计的一种重要方法。本文采用该方法，利用FX-30MR型PLC，成功设计了四路抢答器，并详细描述了设计方案，给出了外部接线图及梯形图程序。关键词：顺序功能图；抢答器；三菱FXOS-30MR型PLC；工作流程图；梯形图程序---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---AbstractWiththecontinuousdevelopmentofscienceandtechnology,encouragepeopletostudyscience,technology,andknowledgeofthevariousmeans.Viestoanswerfirstdeviceasatool,hasbeenwidelyappliedinallkindsofintelligenceandknowledgecompetitionsituation.Butthestrongatmosphere,andlowfrequencyormakesomecomplicatedorlow,reducethereliability.Asaunit,ifonlyacontestthoughineconomy,butcanusefrequencyofeachyear,oftenforlong-termstoragethatisdamaged,andthenpurchaseviestoanswerfirstthetroubleandtimelinessaffectactivities,sothisviestoanswerfirstthedesign.OrderfunctionaldiagramnotfavouredPLCprogramdesignisakindofimportantmethod.Usingthismethod,theuseofPLC,FX-30MRsuccessfully,andfourroadviestoanswerfirstdescribesthedetaileddesignmethodispresented,andtheexternalhookupladprogram.Keywords:orderfunction.Viestoanswerfirst,MitsubishiFXOS-30MRtypePLC,Workflowchart,Ladder-diagramprogram目录第一章概述·····················································11.1三菱PLC的主要特点···················································11.2PLC的工作原理·························································11.3PLC的基本结构·························································21.4顺序功能图····························································3---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---第二章抢答器的控制要求及硬件设置···························42.1抢答器的介绍··························································42.2控制要求······························································42.3硬件设计······························································4第三章抢答器的控制软件设置·································73.1软件设计······························································7结束语·····················································14致谢····································...