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DataAccessAutomationInterfaceStandardVersion2.02February4,1999OPCDataAccessAutomationSpecification2.022Synopsis:ThisspecificationisaninterfacefordevelopersofOPCclientsandOPCDataAccessServers.Thespecificationisaresultofananalysisanddesignprocesstodevelopastandardinterfacetofacilitatethedevelopmentofserversandclientsbymultiplevendorsthatshallinter-operateseamlesslytogether.ThisdocumentdefinestheOPCDataAccessOLEAutomationinterfacefordevelopersofOPCclientsandOPCDataAccessServers.ThepurposeofthisspecificationistoprovideanOLEAutomationinterfacefortheOPCDataAccessServerCustomInterfaceFunctionalityDocumentationTypeIndustryStandardSpecificationTitle:OPCDataAccessAutomationSpecificationDate:February3,1999Version:2.02SoftMS-WordSource:opcda20_auto.docAuthor:OPCFoundationStatus:ReleaseTrademarks:Mostcomputerandsoftwarebrandnameshavetrademarksorregisteredtrademarks.Theindividualtrademarkshavenotbeenlistedhere.RequiredRuntimeEnvironment:ThisspecificationrequiresWindows95/98(withDCOMinstalled),WindowsNT4.0orlater.ItisrecommendedthatWindowsNT4.0machinesberunwithSP3,orlater.OPCDataAccessAutomationSpecification2.023NON-EXCLUSIVELICENSEAGREEMENTTheOPCFoundation,anon-profitcorporation(the“OPCFoundation”),hasestablishedasetofstandardOLE/COMinterfaceprotocolsintendedtofostergreaterinteroperabilitybetweenautomation/controlapplications,fieldsystems/devices,andbusiness/officeapplicationsintheprocesscontrolindustry.ThecurrentOPCspecifications,prototypesoftwareexamplesandrelateddocumentation(collectively,the“OPCMaterials”),formasetofstandardOLE/COMinterfaceprotocolsbaseduponthefunctionalrequirementsofMicrosoft’sOLE/COMtechnology.Suchtechnologydefinesstandardobjects,methods,andpropertiesforserversofreal-timeinformationlikedistributedprocesssystems,programmablelogiccontrollers,smartfielddevicesandanalyzersinordertocommunicatetheinformationthatsuchserverscontaintostandardOLE/COMcomplianttechnologiesenableddevices(e.g.,servers,applications,etc.).TheOPCFoundationwillgranttoyou(the“User”),whetheranindividualorlegalentity,alicensetouse,andprovideUserwithacopyof,thecurrentversionoftheOPCMaterialssolongasUserabidesbythetermscontainedinthisNon-ExclusiveLicenseAgreement(“Agreement”).IfUserdoesnotagreetothetermsandconditionscontainedinthisAgreement,theOPCMaterialsmaynotbeused,andallcopies(inallformats)ofsuchmaterialsinUser’spossessionmusteitherbedestroyedorreturnedtotheOPCFoundation.ByusingtheOPCMaterials,User(includinganyemployeesandagentsofUser)agreestobeboundbythetermsofthisAgreement.LICENSEGRANT:SubjecttothetermsandconditionsofthisAgreement,theOPCFoundationherebygrantstoUseranon-exclusive,royalty-free,limitedlicensetouse,copy,displayanddistributetheOPCMaterialsinordertomake,use,sellorotherwisedistributeanyproductsand/orproductliteraturethatarecompliantwiththestandardsincludedintheOPCMaterials.AllcopiesoftheOPCMaterialsmadeand/ordistributedbyUsermustincludeallcopyrightandotherproprietaryrightsnoticesincludeonorinthecopyofsuchmaterialsprovidedtoUserbytheOPCFoundation.TheOPCFoundationshallretainallright,titleandinterest(including,withoutlimitation,thecopyrights)intheOPCMaterials,subjecttothelimitedlicensegrantedtoUserunderthisAgreement.WARRANTYANDLIABILITYDISCLAIMERS:UseracknowledgesthattheOPCFoundationhasprovidedtheOPCMaterialsforinformationalpurposesonlyinordertohelpUserunderstandMicrosoft’sOLE/COMtechnology.THEOPCMATERIALSAREPROVIDED“ASIS”WITHOUTWARRANTYOFANYKIND,EXPRESSORIMPLIED,INCLUDING,BUTNOTLIMITEDTO,WARRANTIESOFPERFORMANCE,MERCHANTABILITY,FITNESSFORAPARTICULARPURPOSEORNON-INFRINGEMENT.USERBEARSALLRISKRELATINGTOQUALITY,DESIGN,USEANDPERFORMANCEOFTHEOPCMATERIALS.TheOPCFoundationanditsmembersdonotwarrantthattheOPCMaterials,theirdesignortheirusewillmeetUser’srequirements,operatewithoutinterruptionorbeerrorfree.INNOEVENTSHALLTHEOPCFOUNDATION,ITSMEMBERS,ORANYTHIRDPARTYBELIABLEFORANYCOSTS,EXPENSES,LOSSES,DAMAGES(INCLUDING,BUTNOTLIMITEDTO,DIRECT,INDIRECT,CONSEQUENTIAL,INCIDENTAL,SPECIALORPUNITIVEDAMAGES)ORINJURIESINCURREDBYUSERORANYTHIRDPARTYASARESULTOFTHISAGREEMENTORANYUSEOFTHEOPCMATERIALS.OPCDataAccessAutomationSpecification2.024GENERALPROVISIONS:ThisAgreementandUser’slicensetotheOPCMaterialsshallbeterminated(a)byUserceasingalluseoftheOPCMaterials,(b)byUserobtainingasupersedingversionoftheOPCMaterials,or(c)bytheOPCFoundation,atitsoption,ifUsercommitsamaterialbreachhereof.UponanyterminationofthisAgreement,UsershallimmediatelyceasealluseoftheOPCMaterials,destroyallcopiesthereoftheninitspossessionandtakesuchotheractionsastheOPCFoundationmayreasonablyrequesttoensurethatnocopiesoftheOPCMaterialslicensedunderthisAgreementremaininitspossession.Usershallnotexportorre-exporttheOPCMaterialsoranyproductproduceddirectlybytheusethereoftoanypersonordestinationthatisnotauthorizedtoreceivethemundertheexportcontrollawsandregulationsoftheUnitedStates.TheSoftwareandDocumentationareprovidedwithRestrictedRights.Use,duplicationordisclosurebytheU.S.governmentissubjecttorestrictionsassetforthin(a)thisAgreementpursuanttoDFARs227.7202-3(a);(b)subparagraph(c)(1)(i)ofth