XX职业技术学院毕业论文(设计)基于PLC的物料混合控制系统的研究系部自动控制工程系专业名称电气自动化班级电气1081班姓名XX学号XXXXXXXXX指导教师张强2010年9月6日基于PLC的物料混合控制系统的研究指导老师：张强2008级电气自动化专业学号XXX姓名XX摘要PLC是以计算机技术为核心的通用自动控制装置，也可以说它是一种用程序来改变控制功能的计算机。随着微处理器、计算机和通信技术的飞速发展，可编程序控制器PLC已在工业控制中得到广泛应用，而且所占比重在迅速的上升。PLC主要由CPU模块、输入模块、输出模块和编程装置组成。它应用于工业混合搅拌设备，使得搅拌过程实现了自动化控制、并且提升了搅拌设备工作的稳定性，为搅拌机械顺利、有序、准确的工作创造了有力的保障。本文所介绍的多种液体混合的PLC控制程序可进行单周期或连续工作，具有断电记忆功能，复电后可以继续运行。另外，PLC还有通信联网功能，再通过WINCC组态，可直接对现场监控、更方便工作和管理。关键词：可编程序控制器PLC；液位传感器；定时器；BasedonPLCcontrolsystemofmixingeffciengTutor:zhangqiang2008electricautomationlevelNo:200812633Name:LixinAbstractComputertechnologyasthecoreofPLCinthegeneralautomaticcontrolequipment,itisakindofprogramtochangecontrolfunctionofthecomputer.Asmicroprocessors,computerandcommunicationtechnology,therapiddevelopmentofPLCprogrammablecontrollerhaswidelyappliedinindustrialcontrol,andtheproportionoftherapidrisein.PLCmainlyconsistsofCPUmodule,inputandoutputmoduleandprogrammingmoduledevice.Itisappliedinindustry,mixingequipmentmixingprocessrealizedautomationcontrol,andimprovedthestability,agitateequipmentworkforthemixingmachinesmoothly,orderly,accurateworkingcreatespowerfulguarantee.ThispaperintroducesvariousliquidmixtureofPLCcontrolprocedurescanbeasinglecycleorcontinuousworkingmemoryfunction,cancontinuerunningafter,wiredback.Inaddition,PLCandcommunications,networkingWINCCconfiguration,butthroughdirecttositemonitoringandmanagement,andmoreconvenient.Keywords:PLCprogrammablecontroller,Levelsensor,Thetimer,目录第一章引言..................................................................................................................1第二章总体方案设计................................................................................................3第三章硬件设计..........................................................................................................53.1硬件选型，根据PLC的输入、出点数，控制功能选择适用型号的PLC.....53.1.1PLC机型选择..................................................................................................53.1.2PLC容量选择..................................................................................................73.1.3I/O模块的选择................................................................................................73.1.4电源模块的选择...............................................................................................93.1.5设备型号选择.................................................................................................103.2外部接线图........................................................................................................103.3系统安全设计，可靠性、实用性强.................................................................11第四章程序设计........................................................................................................134.1设计程序的流程图.............................................................................................134.2I/O分配表....
