DCS和PLC区别总结的比较好的一篇文章Word格式文档下载.docx
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DCS和PLC区别总结的比较好的一篇文章Word格式文档下载.docx
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DCS和PLC区别总结的比较好的一篇文章@#@TheDifferenceBetween@#@DCSandPLC@#@Inthepowerplantautomationinthermalfield,DCSandPLCistwocompletelydifferentandhavesomethingtotheconceptofcontact.DCSandPLCiscomputertechnologyandindustrialcontroltechnology,thecombinationofthepowerofthemainenginecontrolsystem,andiswithDCSPLCismainlyappliedinthepowerplantauxiliaryworkshop.DCSandPLChasoperatorstationprovidesthemeansofhuman-computerinteraction,relyonthecontrollerbasedoncomputertechnologytocompletecontroloperation,allthroughtheI/Ocardfinishedandacomponentandexecutionofthedevicedataexchange,hascallednetworkcommunicationssystem.DCSandPLCsosimilar,whythereisacompletelydifferentconceptinengineeringpractice,wehowtochoose?
@#@Thispaper,fromthehistoricalevolution,technicalfeatures,developmentdirectionandsoonseveralaspectsarereviewedinthispaper,thehopecanbereferenceforthethermalprofessionals.TheDCSinNETWORK6000+asanexample,thepapertriestodetailedclearexamples.@#@1ThehistoryandcoreconceptofDCSandPLC@#@DCSforDISTRIBUTEDCONTROLSYSTEM.Referstothedangerousscatteredanddataset.70stoenterthemarket,completetheanalogcontrolwithPIDoperation,insteadofthesimulationmainlycontrolinstrument.FirstproposedakindofsuchthoughtsofDCSinstrumentmanufacturers,atthattimeismainlyusedinchemicalindustry.Andinthe60sPLCsuccessfullydeveloped,calledtheLogicoperationofthePLC(ProgrammableController),basedasPLC.Mainlyisusedinautomobilemanufacturing.@#@DCSanddesignprincipleoflargedifferencewithPLC,PLCtouchtherelaycopyfromthecontrolprincipleoftheriseanddevelopmentofthe70s,onlytheswitchquantitylogiccontrolofPLC.It’stostoretoperformthelogicoperation,sequencecontrol,timing,countingandoperationoftheoperationinstructions;@#@Andthroughthedigitalinputandoutputoperation,tocontrolallkindsofmechanicalorproductionprocess.Usersoftheproductionprocesscontrolprogramtoexpresstheprocessrequirement.WillitinthePLCprogrammemory,theruntimeusersaccordingtostorethecontentoftheprogramexecutiontocompleteideallysuitedtoprocesstherequiredaction.@#@DCSoperationalamplifierisinonthebasisofthedevelopmentofmay.Putallthefunction,therelationshipbetweenthevariousprocessvariablesaresuccessfuldesigncanblock.Inthemid70'@#@s,theDCSonlyanalogcontrol.@#@DCSandPLCcontrolleristhemaindifferenceintheswitchquantityandanalogcomputing,eveniflaterbothmutualsomepenetration,buttherearestilldifferences.Sincethe80s,PLClogicaloperationsoutside,alsoinadditiontoaddingsomecontrolcircuitalgorithm,buttocompletesomecomplexoperationormoredifficultwithladder-diagramprogramming,PLC,analogcomputingwhenprogramminginnottoo,intuitive,andprogrammingismoretroublesome.Butinthesolutioninlogic,showtheadvantagesoffast.AndDCSusefunctionofpackagingsimulationcalculationandlogicoperations,whetherlogicoperationorcomplexsimulationofoperationformsofexpressionareveryclear,butrelativelyPLCfortheexpressionofthelogicaloperationefficiencyislow.@#@DCSandPLCinthehistoricalevolutiondifferencesisobvious,theirsubsequenthadagreatinfluence.However,thegreatestimpactonsubsequentdevelopment,andnotthedifferenceinorigintechnology,butitsorigin,thedifferencebetweentheconcept.DCSofthecoreconceptsofthedangerisscattereddataset,thecomputercontrolsystem,thereforethedevelopmentofDCS,whichisintheprocessofcontinuoususeofcomputertechnology,thecommunicationtechnologyandthelatestachievementsofcontroltechnology,tosetupacompletesystemofthedistributedcontrol,DCSofferusersisacompleteforindustrialcontrolofthesafetyandsecurityofhighlyefficientandflexiblesolutions.AndthecoreconceptsofPLCprogrammablecontrolleris,thepurposeisusedtoreplacerelays,executinglogicandtimeapartandcontrolfunctions,establishtheorderofflexibleprogramcontroldevice.So,PLCofthedevelopmentofthemainlineisconstantlyimprovetheabilityindex,touserswithaperfectfunctionofflexiblecontroldevice.@#@DCS,PLCisasystemisadevice,thisisbothinthefundamentaldifferencebetweentheconcept.Thisdifferencewastheimpactofthedeep,itintothetechnologyeveryaspectoftheeconomy.@#@2DCSandPLCtechnologycharacteristicsandmutualinfiltration@#@Differentconceptualbasis,differentpathmakesDCSandPLChavedifferenttechnicalcharacteristics,andthedevelopmentoftechnologyisnotclosed,learnfromeachothermutualinfiltrationhasalwaysthroughoutthedevelopmentprocess.@#@2.1,controlprocessingpower@#@Weknow,aPLCcontroller,oftencandealwiththousandso
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