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1、科技论文题目ApplicationofProgrammableLogicController系别尚德光伏学院专业计算机控制技术班级0801学生姓名学号指导教师蒋鹏2010年11月28ApplicationofProgrammableLogicControllerAbstract:ThispaperintroducesthePLC'shistory,structure,uses,applications,characteristicsandfutureprospectsrelatedtoPLC.Thiscanbethroughacorrespondingunderstandi
2、ngofthePLC.ItwillbehelpfultoPLCapplications.Keywords:PLC、Application、FeaturesBrieflyProgrammablecontrolleristhelate60sintheUnitedStatesfirst,andthencalledprogrammablelogiccontrollerPLC(ProgrammableLogicController),aimstoreplacetherelayinordertoimplementthelogictodetermine,timing,countingan
3、dothersequentialcontrolfunctions.PLCbasicdesignideaisthecomputerfullyfunctional,flexible,universalandotheradvantagesandrelaycontrolsystem,easytounderstand,easytooperate,cheapandcombinetheadvantagesofthecontrollerhardwareisstandard,generic.Basedontheactualapplicationobjects,thesoftwarewillc
4、ontrolthecontentcompiledintothecontrolleruserprogrammemory.Controllerandthecontrolledobjecttoconnecteasily.Asthesemiconductortechnology,inparticularmicroprocessorsandmicro-computertechnology,to70afterthemid,PLChasbeenwidespreaduseofmicroprocessorsastheCPU,inputandoutputmodules,andperiphera
5、lcircuitsarealsousedinlarge-scaleEvenverylargescaleintegratedcircuits,whenthePLCisnolongerlogicaltodeterminefunction,alsohasadata-processing,PIDregulator,anddatacommunicationcapabilities.Programmablecontrollerisadigitalcomputingoperationofanelectronicsystemdesignedforindustrialenvironmenta
6、pplications.Itusesaprogrammablememory,usedinitsinternalmemoryimplementationofthelogical,sequentialcontrol,timing,calculationandarithmeticoperationssuchasinstruction,andthroughdigitalaninputsandoutputstocontrolvarioustypesofmechanicalortheproductionprocess.PLCisacomputertechnologywithtradit
7、ionalrelaycontactwiththeproductofacombinationofcontroltechnology,whichovercomestherelaycontactscontrolsystemwiringcomplexityofthemechanicalcontacts,reliabilityandlowpowerconsumptionand28high,versatilityandflexibilityoftheshortcomingsofpoor,fulltheadvantagesofu
