PROFIBUS 通讯协议 详细描述 DP PA FMS 现场总线

PROFIBUSSystemDescriptionTechnologyandApplicationIPROFIBUSSystemDescriptionIntroductionThefieldofindustrialcommunicationsiscontinu-ingtodevelopatanastonishingpacewiththeresultthatthefieldofautomationtechnologyisconstantlychanging.Initially,automationfocusedexclusivelyonproduction,butnowitispartofanetworkthatcoversserviceandmaintenance,warehousing,resourceoptimizationandthepro-visionofdataforMESandERPsystemsinaddi-tiontotheactualtaskofautomation.Fieldbustechnology,whichhasfacilitatedmigra-tionfromcentralizedtodecentralizedautomationsystemsandsupportstheuseofdistributedintel-ligence,hasbeenthedrivingforcebehindthisdevelopment.Ethernet-basedcommunicationsystemslinkautomationtechnologywithinforma-tiontechnology,thusimplementingconsistentcommunicationfromthefieldleveltothecorpo-ratemanagementlevel.StandardizedsolutionscanbefoundinPROFIBUSandPROFINET,whichprovideabso-luteconsistencyandarehighlyapplication-oriented.Withitsstandardprotocol,PROFIBUStakesinallsubprocessesfoundinproductionandprocessautomation,includingsafety-relatedcommunicationanddriveapplications,therebyprovidingtheidealbasisforensuringhorizontalconsistencywithinanautomationsystem.PRO-FINETalsofeaturesastandardprotocolwhich,inadditiontohorizontalcommunication,alsosup-portsverticalcommunication,therebylinkingthefieldlevelwiththecorporatemanagementlevel.Bothcommunicationsystemsare,therefore,abletofacilitatecross-networked,integratedsolutionsthatareoptimizedfortheautomationtaskscon-cerned.Since1989,PROFIBUShasdevelopedintoaworldwideleadingfieldbussystemusedinma-chineandproductionplantautomation.ThemainreasonwhyPROFIBUSstandsoutfromotherfieldbussystemsisbecauseitofferssuchanex-traordinarybreadthofapplications.Applicationspecificrequirementshavebeenintegratedintoapplicationprofiles,andtheseapplicationshavebeencombinedasawholetocreateastandard-izedandopencommunicationsystem.Theuseofopenstandardsinsteadofproprietarysolutionsensureslong-termcompatibilityandexpandability,whichformsthebasisforimplementingcompre-hensiveinvestmentprotectionforusersandma-nufacturers.ThisisaveryimportantconcernofPROFIBUS&PROFINETInternational.Estab-lishedworldwidesupportoffersmemberslong-termperspectives.Withwellover30milliondevices(asoftheendof2009),PROFIBUSiscurrentlypresentineverybranchofindustrialautomationandmakesanimportantcontributiontotheeconomicandtech-nologicalsuccessofthecompanies.IIPROFIBUSSystemDescriptionTableofContents1.INTRODUCTIONTOPROFIBUS.............11.1MARKETPOSITION..............................11.2MODULARDESIGNINSYSTEMBUILDINGBLOCKS.............................................11.3APPLICATION-SPECIFICSOLUTIONS.......21.4HYBRIDAUTOMATION..........................31.5OSILAYERMODELASABASIS..............31.6STANDARDIZATION..............................32.TRANSMISSIONTECHNOLOGY.............42.1TRANSMISSIONASPERRS485ANDRS485-IS.........................................42.2TRANSMISSIONASPERMBPANDMBP-IS............................................52.3OPTICALTRANSMISSION......................52.4WIRELESSTRANSMISSION....................52.5TRANSMISSIONTECHNOLOGYINHAZARDOUSAREAS.............................62.6TOPOLOGY.........................................62.7REDUNDANCY.....................................72.8INSTALLATIONINFORMATIONFORRS485.............................................82.9INSTALLATIONINFORMATIONFORMBP.82.10BUSDIAGNOSTICS...............................93.COMMUNICATIONWITHPROFIBUS......93.1PROFIBUSDPCOMMUNICATIONPROTOCOL.........................................93.2DEVICECLASSES..............................103.3CYCLICALCOMMUNICATIONANDPROFIBUSDIAGNOSTICS.................113.4ACYCLICALCOMMUNICATIONANDPARAMETERADDRESSING..................113.5STANDARDIZEDFUNCTIONBLOCKS(FB).......................................................123.6COMMFBSASASYSTEM-NEUTRALINTERFACEWITHPROFIBUS.............124.APPLICATIONPROFILES......................134.1PROFIDRIVE....................................144.2PROFIBUSPA(PADEVICES,PAPROFILE).........................................144.3IMPROVEMENTSINPROFILE3.02.........144.4HARTONPROFIBUS......................154.5PROFISAFE.....................................164.6IDENTIFICATION&MAINTENANCE(I&M).......................................................165.DEVICEINTEGRATION..........................166.QUALITYASSURANCEANDCERTIFICATION.....................................177.PRODUCTIMPLEMENTATION..............197.1STANDARDCOMPONENTS...................197.2IMPLEMENTINGTRANSMISSIONINTERFACES......................................208.USERBENEFITS....................................208.1STANDARDIZEDANDCONSISTENT........218.2ECONOMY.........................................218.3QUALITYCONSCIOUSNESS..................218.4INNOVATIONANDPROTECTIONOFPRIVILEGES.......................................218.5GLOBALSUPPORT..............................218.6FUTURECOOPERATION......................219.PROFIBUS&PROFINETINTERNATIONAL(PI).............................229.1RESPONSIBILITIESOFPI.....................22InformationonContentsThissystemdescriptiondeal