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1、OPCDataAccessCustomInterfaceSpecification2.04TMDataAccessCustomInterfaceStandardVersion2.05AJune282002OPCDataAccessCustomInterfaceSpecification2.05SpecificationTypeIndustryStandardSpecificationTitle:OPCDataAccessCustomInterfaceSpecificationDate:June
2、28,2002Version:2.05ASoftMS-WordSource:opcda205a_custAuthor:OpcFoundationStatus:ReleasedSynopsis:ThisspecificationisthespecificationoftheinterfacefordevelopersofOPCDataAccessclientsandOPCservers..Thespecificationisaresultofananalysisanddesignprocessto
3、developastandardinterfacetofacilitatethedevelopmentofserversandclientsbymultiplevendorsthatshallinter-operateseamlesslytogether.Trademarks:Mostcomputerandsoftwarebrandnameshavetrademarksorregisteredtrademarks.Theindividualtrademarkshavenotbeenlistedh
4、ere.RequiredRuntimeEnvironment:ThisspecificationrequiresWindows95,WindowsNT4.0orlateriiOPCDataAccessCustomInterfaceSpecification2.05NON-EXCLUSIVELICENSEAGREEMENTTheOPCFoundation,anon-profitcorporation(the“OPCFoundation”),hasestablishedasetofstandardO
5、LE/COMinterfaceprotocolsintendedtofostergreaterinteroperabilitybetweenautomation/controlapplications,fieldsystems/devices,andbusiness/officeapplicationsintheprocesscontrolindustry.ThecurrentOPCspecifications,prototypesoftwareexamplesandrelateddocumen
6、tation(collectively,the“OPCMaterials”),formasetofstandardOLE/COMinterfaceprotocolsbaseduponthefunctionalrequirementsofMicrosoft’sOLE/COMtechnology.Suchtechnologydefinesstandardobjects,methods,andpropertiesforserversofreal-timeinformationlikedistribut
7、edprocesssystems,programmablelogiccontrollers,smartfielddevicesandanalyzersinordertocommunicatetheinformationthatsuchserverscontaintostandardOLE/COMcomplianttechnologiesenableddevices(e.g.,servers,applications,etc.).TheOPCFoundationwillgranttoyou(the
8、“User”),whetheranindividualorlegalentity,alicensetouse,andprovideUserwithacopyof,thecurrentversionoftheOPCMaterialssolongasUserabidesbythetermscontainedinthisNon-ExclusiveLicenseAgreement(“Agreement”).IfUserdoesnotagreetothetermsandconditionscontaine
