單片機外文翻譯—單片機基礎(譯文+英文）

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CANBEDRIVENFROMANEXTERNALSOURCETHISLATTERARRANGEMENTISUSEFULISEXTERNALSYNCHRONIZATIONOFTHEMICROCOMPUTERISREQUIREDWORDSANDTERMSCULMINATIONN頂點SPILTADJ分離的VOLATILEN易變的COMMITV保證ALBEITCONJ雖然CUSTOMADJ定制的VARIANTADJ不同的PIGGYBACKADJ背負式的SOCKETN插座BPLC1PLCSPROGRAMMABLELOGICALCONTROLLERFACEEVERMORECOMPLEXCHALLENGESTHESEDAYSWHEREONCETHEYQUIETLYREPLACEDRELAYSANDGAVEANOCCASIONALREPORTTOACORPORATEMAINFRAME,THEYARENOWGROUPEDINTOCELLS,GIVENNEWJOBANDNEWLANGUAGES,ANDAREFORCEDTOCOMPETEAGAINSTAGROWINGARRAYOFCONTROLPRODUCTSFORTHISYEARSANNUALPLCTECHNOLOGYUPDATE,WEQUERIEDPLCMAKERSONTHESETOPICSANDMOREPROGRAMMINGLANGUAGESHIGHERLEVELPLCPROGRAMMINGLANGUAGESHAVEBEENAROUNDFORSOMETIME,BUTLATELYTHEIRPOPULARITYHASMUSHROOMING“ASRAYMONDLEVEILLE,VICEPRESIDENTPROGRAMMABLECONTROLSAREBEINGUSEDFORMOREANDMORESOPHISTICATEDOPERATIONS,LANGUAGESOTHERTHANLADDERLOGICBECOMEMOREPRACTICAL,EFFICIENT,ANDPOWERFULFOREXAMPLE,ITSVERYDIFFICULTTOWRITEATRIGONOMETRICFUNCTIONUSINGLADDERLOGIC“LANGUAGESGAININGACCEPTANCEINCLUDEBOOLEAN,CONTROLSYSTEMFLOWCHARTING,ANDSUCHFUNCTIONCHARTLANGUAGESASGRAPHCETANDITSVARIATIONANDTHERESINCREASINGINTERESTINLANGUAGESLIKECANDBASICPLCSINPROCESSCONTROLTHUSFAR,PLCSHAVENOTBEENUSEDEXTENSIVELYFORCONTINUOUSPROCESSCONTROLWILLTHISCONTINUE“THEFEELINGTHATIVEGOTTEN,“SAYSKENJANNOTTA,MANGER,PRODUCTPLANNING,SERIESONEANDSERIESSIXPRODUCT,ATGEFANUCNORTHAMERICA,ISTHATPLCSWILLBEUSEDINTHEPROCESSINDUSTRYBUTNOTNECESSARILYFORPROCESSCONTROL“SEVERALVENDORSOBVIOUSLYBETTINGTHATTHEOPPOSITEWILLHAPPENHAVEINTRODUCEDPLCSOPTIMIZEDFORPROCESSAPPLICATIONRICHRYAN,MANGER,COMMERCIALMARKETING,ALLENBRADLEYPROGRAMMABLECONTROLSDIV,CITESPLCSSINCREASINGUSESUCHINDUSTRIESASFOOD,CHEMICALS,ANDPETROLEUMRYANFEELSTHEREARETWOTYPESOFAPPLICATIONSINWHICHTHEYREAPPROPRIATE“ONE,“HESAYS,“ISWHERETHESIZEOFTHEPROCESSCONTROLSYSTEMTHATSBEINGAUTOMATEDDOESNTJUSTIFYDCSDISTRIBUTEDCONTROLSYSTEMWITHTHESTARTINGPRICETAGSOFCHOSEPRODUCTSBEINGRELATIVELYHIGH,APROGRAMMABLECONTROLLERMAKESSENSEFORSMALL,LOWLOOPCOUNTAPPLICATIONTHESECONDISWHEREYOUHAVETOINTEGRATETHELOOPCLOSELYWITHTHESEQUENTIALLOGICALBATCHCONTROLLERSAREPRIMEEXAMPLE,WHERETHESEQUENCEANDMAINTAININGTHEPROCESSVARIABLEAREINTERTWINEDSOCLOSELYTHATTHEBENEFITSOFHAVINGAPROGRAMMABLECONTROLLERTODOTHESEQUENTIALLOGICALOUTWEIGHSSOMEOFTHEDISADVANTAGESOFNOTHAVINGADISTRIBUTEDCONTROLSYSTEM“BILLBARKOVITZ,PRESIDENTOFTRICONEX,PREDICTSTHAT“ALLFUTURECONTROLLERSTHATCOMEOUTINTHEPROCESSCONTROLSYSTEMBUSINESSWILLEMBRACEALOTOFMOREPLCTECHNOLOGYANDALOTMOREPLCFUNCTIONALITYTHANTHEYEVERDIDBEFORE“COMMUNICATIONSANDMAPCOMMUNICATIONSAREVITALTOANINDIVIDUALAUTOMATIONCELLANDTOBEAUTOMATEDFACTORYASAWHOLEWEVEHEARDALOTABOUTMAPINTHELASTFEWYEARS,ANDALOTOFCOMPANIESHAVEJUMPEDONTHEBANDWAGON2MANY,HOWEVER,WEREDISAPPOINTEDWHENAFULLYDEFINEDANDCOMPLETEDMAPSPECIFICATIONDIDNTAPPEARIMMEDIATELYSAYSLARRYKOMAREK“RIGHTNOW,MAPISSTILLAMOVINGTARGETFORTHEMANUFACTURERS,ASPECIFICATIONTHATISNOTFINALPRESENTLY,FOREXAMPLEPEOPLEAREINTRODUCINGPRODUCTSTOMEETTHEMAP21STANDARDYET21BASEDPRODUCTSWILLBEOBSOLETEWHENTHENEWSTANDARDFORMAP30ISINTRODUCED“BECAUSEOFTHIS,MANYPLCVENDORSAREHOLDINGOFFONFULLMAPIMPLEMENTATIONSOMRON,FOREXAMPLE,HASANONGOINGMAPCOMPATIBILITYPROGRAM3BUTFRANKNEWBURN,VICEPRESIDENTOFOMRONSINDUSTRIALDIVISION,REPORTSTHATBECAUSEOFTHELACKOFAFIRMDEFINITION,OMRONSPLCSDONTYETTALKTOMAPSINCEITSUNLIKELYTHATANINDIVIDUALPLCWOULDTALKTOBROADMAPANYWAY,MAKERSARECONCENTRATINGONPROPRIETARYNETWORKSACCORDINGTOSALPROVANZANO,USERSFEARTHATIFTHEYDOGETONBOARDANDVENDORSWITHDRAWFROMMAP,THEYLLBETHEONESLEFTHOLDINGACOMMUNICATIONSSTRUCTURETHATSNOTSUPPORTEDUNIVERSALI/OWHILETHEREARECONCERNSABOUTTHELACKOFCOMPATIBLECOMMUNICATIONSBETWEENPLCSFROMDIFFERENTVENDORS,THECONNECTIONATTHEOTHERENDTHEI/OISEVENMOREFRAGMENTEDWITHRAREEXCEPTIONS,I/OISSTILLPROPRIETARYYETTHEREARETHOSEWHOFEELTHATI/OWILLEVENTUALLYBECOMEMOREUNIVERSALGEFANUCISHOPINGTODOTHATWITHITSGENIUSSMARTI/OLINETHEINDEPENDENTI/OMAKERSAREPULLINGINTHESAMEDIRECTIONMANYSAYTHATI/OISSUCHAHIGHVALUEITEMTHATPLCMAKERSWILLALWAYSWANTTOKEEPITPROPRIETARYASKENJANNOTTA,SAYS“THEI/OISGOINGTOBEADISPROPORTIONATEAMOUNTOFTHEHARDWARESALECERTAINLYEACHPLCVENDORISGOINGTOTRYTOPROTECTTHAT“FORTHATREASON,HESAYS,PLCMAKERSWONTBEGINSELLINGUNIVERSALI/OSYSTEMFROMOTHERVENDOR“IFWESTARTSELLINGTHATKINDOFPRODUCT,“SAYSJANNOTTA,“WHATDOWEMANUFACTURE“WITHMOREINTELLIGENTI/OAPPEARING,SALPROVANZANOFEELSTHISWILLLEADTOMOREDIFFERENTIATIONAMONGI/OFROMDIFFERENTMAKERS“WHERETHEI/OBECOMESEXTREMELYINTELLIGENTANDBECOMESPARTOFTHESYSTEM,“HESAYS,“ITREALLYISHARDTODEFINEWHICHISTHEI/OANDWHICHISCPUITREALLYCPU,IFYOUWILL,ISEQUALLYINTEGRATEDINTOTHESYSTEMASTHEI/O“CONNECTINGPLCI/OTOPCSWHILEDIFFERENTPLCSPROBABLYWILLCONTINUETOUSEPROPRIETARYI/O,SEVERALVENDORSMAKEITPOSSIBLETOCONNECT5THEIRI/OTOIBMPCCOMPATIBLEEQUIPMENTALLEBRADELEY,COULD,ANDCINCINNATIMILACRONALREADYHAVE,ANDRUMORHASITTHATGEISPLANNINGSOMETHINGALONGTHESESAMELINES4BILLKETELHUT,MANAGEOFPRODUCTPLANNINGATGEFANUCNORTHAMERICA,SEESTHISSORTOFTHINGASALTERNATIVETOUNIVERSALI/O“ITHINKTHETREND,INSTEADOFTOWARDUNIVERSALI/O,WILLBEMULTIPLEHOSTINTERFACE,“HESAYSJODIEGLORE,DIRECTOROFMARKING,SQUAREDAUTOMATIONPRODUCTS,VIEWSITASANOTHERINDICATIONTH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