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饮料罐装生产流水线的PLC控制I饮料罐装生产流水线的PLC控制摘要随着计算机和网络通讯技术的发展，企业对生产过程的自动控制和信息通讯提出了更高的要求。饮料生产线比较复杂，生产环节也很多。其中饮料的灌装就是饮料生产线上重要的生产环节。控制系统主要由一台PLC、交流异步电机、液罐、多个灌装状态检测传感器、故障报警蜂鸣器、产量统计显示器等组成。其中电机用来控制运送饮料瓶的传送带部分。本控制系统有两个特点：一是输入、输出设备比较多；二是所需实现的控制是顺序逻辑控制、模块控制以及计算统计功能。西门子S7-300系列PLC在模块控制、高速计数和计算方面的功能较强，实现比较方便。因此本系统选用了S7-300型号的PLC进行控制，既满足了控制系统所需的I/O点数，又满足了被控对象的控制要求。采用PLC控制饮料灌装生产线，实现了饮料生产线的自动化、智能化。对劳动生产率的提高，饮料质量和产量的提高具有深远的意义。关键词S7-300可编程序控制器（PLC）/自动化/智能化饮料罐装生产流水线的PLC控制IIBeveragecansproductionlineofthePLCcontrolAbstractWiththecomputerandnetworkcommunicationtechnology,business-to-productionprocessautomationandinformationandcommunicationputforwardhigherrequirements.Beverageproductionlinemorecomplexproductionprocessesarealsonumerous.Onedrinkisabeveragefillingproductionline'smostimportantproductionareas.ControlsystemmainlybyasinglePLC,ACasynchronousmotor,tank,multiplefillingstatedetectionsensor,faultalarmbuzzer,theoutputstatisticsdisplayssoon.Onemotorisusedtocontrolthedeliveryofbeveragebottlesconveyorbeltparts.Thecontrolsystemhastwocharacteristics:First,inputandoutputdevicesaremore;secondisrequiredinordertoachievecontrolislogiccontrol,modulecontrol,andcomputingstatisticalfunctions.SiemensS7-300seriesPLCinthemodulecontrol,high-speedcountingandcomputingfunctionsofastrongerandachievemoreconvenient.Therefore,thissystemadoptstheS7-300typeofPLCcontrol,notonlythecontrolsystemtomeettherequiredI/Opoints,butalsotomeetthecontrolrequirementsofthecontrolledobject.UseofPLCcontrolbeveragefillingproductionline,toachievethesoftdrinkproductionlineautomationandintelligence.Onlaborproductivitygains,improvebeveragequalityandyieldfar-reachingsignificance.KEYWORDSS7-300PLC，Automation，Intelligence饮料罐装生产流水线的PLC控制III目录摘要..............................................................................................................................IAbstract.............................................................................................................................II前言.............................................................................................................................11.绪论..................................................................................................................................21.1饮料灌装生产流水线的概述.......................................................................21.1.1生产流水线的概念.....................................................................................21.1.2生产流水线的形式及特点.........................................................................21.2饮料灌装生产流水线模型............................................................................21.3PLC基础.............................................................................................................31.3.1可编程控制器的产生和定义.......................................................................31.3.2可编程控制器的特点....................................................................................41.3.3设计PLC控制时，应遵循以下基本原则................................................52.饮料灌装生产流水线的PLC控制要求和内容及硬件设计...........................62.1控制任务............................................................................................................62.2控制方案设计原则.........................................................................................72.2.1确定系统控制任务与设计要求..................................................................72.2.2制定电气控制方案......................................................................................72.2.3确定控制系统的输入输出信号..................................................................72.2.4PLC选型与硬件配置...............................................................................82.2.5I/O分配.....................................................................................................82.2.6控制程序设计..............................................................................................83.S7-300硬件介绍.........................................................................................................93.1S7-300硬件模块............................................................................................93.1.1CPU............................................................................................................9饮料罐装生产流水线的PLC控制IV3.1.2信号模块.....................................................................................................113.1.3通信模块....................................................................................................133.1.4功能模块....................................................................................................133.1.5接口模块....................................................................................................133.2S7-300的扩展能力......................................................................................133.3面向槽位的编址方式...................................................................................143.3.1S7-300数字量模块的固定编址.............................................................143.3.2S7-300模拟量模块的固定编址.............................................................144.硬件接线.......