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1、OPCDataAccessCustomInterfaceSpecification2.04TMDataAccessCustomInterfaceStandardVersion2.05AJune282002OPCDataAccessCustomInterfaceSpecification2.05SpecificationTypeIndustryStandardSpecificationTitle:OPCDataAccessCustomInterfaceSpecificationDate:June28,2002Version:2.05ASoftMS-WordSource:opcda
2、205a_custAuthor:OpcFoundationStatus:ReleasedSynopsis:ThisspecificationisthespecificationoftheinterfacefordevelopersofOPCDataAccessclientsandOPCservers..Thespecificationisaresultofananalysisanddesignprocesstodevelopastandardinterfacetofacilitatethedevelopmentofserversandclientsbymultiplevendor
3、sthatshallinter-operateseamlesslytogether.Trademarks:Mostcomputerandsoftwarebrandnameshavetrademarksorregisteredtrademarks.Theindividualtrademarkshavenotbeenlistedhere.RequiredRuntimeEnvironment:ThisspecificationrequiresWindows95,WindowsNT4.0orlateriiOPCDataAccessCustomInterfaceSpecification2
4、.05NON-EXCLUSIVELICENSEAGREEMENTTheOPCFoundation,anon-profitcorporation(the“OPCFoundation”),hasestablishedasetofstandardOLE/COMinterfaceprotocolsintendedtofostergreaterinteroperabilitybetweenautomation/controlapplications,fieldsystems/devices,andbusiness/officeapplicationsintheprocesscontroli
5、ndustry.ThecurrentOPCspecifications,prototypesoftwareexamplesandrelateddocumentation(collectively,the“OPCMaterials”),formasetofstandardOLE/COMinterfaceprotocolsbaseduponthefunctionalrequirementsofMicrosoft’sOLE/COMtechnology.Suchtechnologydefinesstandardobjects,methods,andpropertiesforservers
6、ofreal-timeinformationlikedistributedprocesssystems,programmablelogiccontrollers,smartfielddevicesandanalyzersinordertocommunicatetheinformationthatsuchserverscontaintostandardOLE/COMcomplianttechnologiesenableddevices(e.g.,servers,applications,etc.).TheOPCFoundationwillgranttoyou(the“User”),
7、whetheranindividualorlegalentity,alicensetouse,andprovideUserwithacopyof,thecurrentversionoftheOPCMaterialssolongasUserabidesbythetermscontainedinthisNon-ExclusiveLicenseAgreement(“Agreement”).IfUserdoesnotagreetothetermsandconditionscontaine
