关于可编程逻辑控制器外文翻译

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1、关于可编程逻辑控制器外文翻译关于可编程逻辑控制器外文翻译导读：anpanyAEGandthenbyFrenchSchneiderElectric,thecurreProgrammablelogiccontrollerAprogrammablelogiccontroller(PLC)orprogrammablecontrollerisadigitalputerusedforautomationofelectromechanicalprocesses,suchascontrolofmachineryonfactoryassemblylines,amusementrides,orlig

2、htingfixtures.PLCsareusedinmanyindustriesandmachines.Unlikegeneral-purposeputers,thePLCisdesignedformultipleinputsandoutputarrangements,extendedtemperatureranges,immunitytoelectricalnoise,andresistancetovibrationandimpact.Programstocontrolmachineoperationaretypicallystoredinbattery-backedorno

3、n-volatilememory.APLCisanexampleofarealtimesystemsinceoutputresultsmustbeproducedinresponsetoinputconditionse,otherericanautomotivemanufacturingindustry.Programmablelogiccontrollersotiveindustryodelschanged.BeforethePLC,control,sequencing,andsafetyinterlocklogicformanufacturingautomobilestime

4、rs,anddrumsequencersanddedicatedclosed-loopcontrollers.Theprocessforupdatingsuchfacilitiesfortheyearlymodelchange-overeconsumingandexpensive,aselectriciansneededtoindividuallyreatic(theautomatictransmissiondivisionofGeneralMotors)issuedarequestforproposalforanelectronicreplacementforhard-s.Th

5、eefromBedfordAssociatesofBedford,Massachusetts.ThefirstPLC,designatedthe084becauseitanufacturing,selling,andservicingthisneanpanyAEGandthenbyFrenchSchneiderElectric,thecurrentoodelsbuiltisnoonikerattheendofitsproductrangeuntilthe984madeitsappearance.Theautomotiveindustryisstilloneofthelargest

6、usersofPLCs.2．DevelopmentEarlyPLCss.ThesePLCsmedin;ladderlogic;,blesaschematicdiagramofrelaylogic.Thisprogramnotationandsfortheexistingtechnicians.OtherearlyPLCsusedaformofinstructionlistprogramming,basedonastack-basedlogicsolver.ModernPLCscanbeprogrammedinavarietyofladderlogictomoretradition

7、alprogramminglanguagessuchasBASICandC.AnothermethodisStateLogic,avery5678关于可编程逻辑控制器外文翻译(2)导读：todesktopputers.PLC-likeprogrammingbinedoteI/OhardePLCsincertainapplications.Regardingthepracticalityofthesedesktopputerbasedlogiccontrollers,itisimp