基于PLC标签打印控制系统的设计

1摘要标签打印，顾名思义就是打印标签。标签是指产品上的文字图形符号及一切的说明物。随着市场经济的发展和商品的激烈竞争，标签已成为公平交易、商品竞争的一种重要形式。随着科技的进步、标准规范化管理、企业快速发展不断地提高，各行各业对标签的质量、形象、安全、高效、准确管理的要求越来越高！规范标签管理已经成为各行管理的各业各部门重要内容之一，受到越来越多管理者的高度重视，所以标签的制作及打印已经成为日常工作的一部分，如何高效的制作出优质标签将成为大家关注的一个问题，特别是在中国大多数需要使用标签的机构，如高效管理中普遍没有专业的打印机支持，在此前提下，如何在普通打印机上实现高质量的标签的排版和打印，是有一定普遍意义的。所以本次设计主要为了实现更加方便快捷的控制标签打印的过程以及标签内容更易改的打印系统而设计。本次设计的主要思路为通过PLC控制俩部分来实现，第一部分通过PLC的输出控制交流接触的线圈来控制标签打印电机的运行，进行标签打印；第二部分，通过PLC的输出控制频器，在通过变频器对传送电机进行三段速的控制，最终实现设计。通过最终测试，实现了以上的标签打印设计。关键词：PLC，交流接触器，变频器1ABSTRACTLabelprinting,justasitsnameimpliesistoprintlabel.Thewordsonthelabel,theproductisallgraphicsymbolsandinstructions.Withthedevelopmentofthemarketeconomyandthefiercecompetitionofcommodities,thelabelhasbecomeafairtrade,animportantformofcompetitionofthecommodity.Withtheprogressofscienceandtechnologyrapiddevelopment,standards,standardizedmanagement,enterprisesconstantlyimprove,inallwalksoflife,aboutthequalityofthelabelimage,safe,efficientandaccuratemanagementofthedemandishigherandhigher!Specificationlabelmanagementhasbecomeallwalksoflife,oneoftheimportantcontentsofthevariousdepartmentsattachgreatimportancetobymoreandmoremanagers,sothelabelproductionandprintinghasbecomeapartofthedailywork,howeffectivelytoproducehighqualitylabelwillbeaquestionofattention,especiallyinmostofChina'sneedtousethelabel,suchasefficientmanagementinprofessionalprintersupport,underthepremise,howtoachievehighqualitylabelonordinaryprintertypesettingandprinting,thereisacommonsense.Sothisdesignmainlyinordertoachievemoreconvenientandquickcontrollabelprintingprocessandlabelprintingsystemanddesigncontentaremorelikelytochange.ThedesignofthemainideasimplementedbyPLCcontroltwoparts,thefirstpartthroughtheoutputofthePLCcontrolaccontactorcoiltocontroltheoperationoflabelprintingmachine,labelprinting,Thesecondpart,throughtheoutputofthePLCcontroloffrequency,intothreesectionsoftransmittingmotorbythefrequencyconvertercontrol,finallyrealizesthedesign.Throughthefinaltesting,andrealizedtheabovelabelprintingdesign.KEYWORDS:PLC,accontactor,frequencyconverter1目录1系统方案设计........................................................................................................................12控制器....................................................................................................................................22.1控制器的选择...........................................................................................................22.2控制要求...................................................................................................................22.3S7-200MicroPLC的概述.....................................................................................22.4输入输出I/O口分配表...........................................................................................32.5程序流程图（如图3）............................................................................................33传感器....................................................................................................................................73.1传感器定义................................................................................................................73.2传感器分类................................................................................................................73.3光电对射传感器.......................................................................................................74电机........................................................................................................................................84.1打码电机...................................................................................................................84.2传送电机...................................................................................................................85变频器....................................................................................................................................95.1变频器定义...............................................................................................................95.2西门子MM440变频器...............................................................................................95.3变频器面板按钮功能（如图7）............................................................................95.4变频器参数设置.....................................................................................................106外部接线总图（如图8）...................................................................................................127参考文献..............................................................................................................................138致谢信..................................................................................................................................141PLC标签打印控制系统的设计1系统方案设计系统设计的核心思想过程：按下启动按钮SB1,传送带电机M2以20Hz正转运行，当入料传感器检测到A点传送带上有标签工件,打码电机M1开始打码运转，3秒后打码电机停止第一次打码；此时，传送带电机M2变换成30Hz正转运行，当工件移动到达B点后，打码电机M1开始打码运转，5秒后打码电机停止第二次打码；同时，传送带电机M2以50Hz正转运行，当工件移动到达C点时，打码电机M1开始打码运转，8秒后打码电机停止第三次打码。一次打码结束。因此，系统主要有输入，控制器，打码电机，传送电机，变频器，标签纸组成，系统设计框图如图1所示。图1设计框图下面分别论证这几个模块的方