外文翻译--PLC简介-豆柴文库

外文翻译--PLC简介.doc

2024-10-24

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外文翻译 PLCintroduction PLCismainlyindexwordarithmeticoperationselectricalsystemprogrammablelogiccontroller,usedtocontroltheproductionprocessofmechanical.Butapubliclimitedcompany,thenameofthepowersupplycordvehiclesabbreviation.1thebasicconcept,thePLC EarlyProgrammableControllercalledProgrammableLogicController(PLCProgrammableController,questions),itismainlyusedtoreplacerelayrealizeLogiccontrol.Withthedevelopmentoftechnology,thiskindofusingmicrocomputertechnology,industrialcontroldevicefunctionalityisgreatlyexceedthelogiccontrolthescope,therefore,todaythisdevicecalledtheprogrammablecontroller,orPC.ButinordertoavoidPersonalComputer(PersonalComputer),sowilltheabbreviationofconfusionasPLCprogrammablecontroller,since1966PLCusdataequipmentcompany(DEC),andthecurrentU.S.researchappears,Japan,Germany'sprogrammablecontrollerqualityisfine,thefunctionisstrong. 1,thebasicstructureofPLC PLCisessentiallyaspecialinindustrialcontrolcomputer,itshardwarestructurewithmicrocomputerissame,basically,basicstructurefor: A,power PLCinthesystemofpowerplaysaveryimportantrole.Ifhavenoagoodandreliablepowersupplysystemisnotworkproperly,sothemanufacturersofthepowerofPLCdesignandmanufacturinghaspaidmuchattentionto.Ingeneralacvoltagefluctuation+10%(+15%)range,cannottakeothermeasuresandwillPLCisconnecteddirectlytotheexchangenetworkup B.thecentralprocessingunit(CPU) Thecentralprocessingunit(CPU)isthePLCcontrolcentral.ItaccordingtothefunctionofPLCsystemprogramgivesreceivesandstoragefromprogrammertypeofuserprogramsanddata;Checkthepower,storage,I/Oandcordoned-offtimerstate,andcanthesyntaxerrordiagnosisuserprograms.WhenPLCisputintooperation,itfirsttoscanallthewayofreceivingsiteconditionanddatainputdevice,andseparatelydepositedintheI/Oimagearea,andthenfromtheuserprogrammemoryreadtheuserprogram,throughdetailedexplanationaccordingtoinstructionscommandsafterregulationslogicorcountoperationresultsintotheI/Oimageareaordataregisterinside.Alltheuserprogramexecutionaftercompletion,theI/Oimageofeachoutputstateoroutput