OPC DA 205a SpecificationWord文件下载.docx

OPC DA 205a SpecificationWord文件下载.docx

《OPC DA 205a SpecificationWord文件下载.docx》由会员分享，可在线阅读，更多相关《OPC DA 205a SpecificationWord文件下载.docx（264页珍藏版）》请在冰点文库上搜索。

SpecificationTypeIndustryStandardSpecification

Title:

OPCDataAccessCustom

InterfaceSpecification

Date:

June28,2002

Version:

2.05ASoftMS-Word

Source:

opcda205a_cust

Author:

OpcFoundationStatus:

Released

Synopsis:

ThisspecificationisthespecificationoftheinterfacefordevelopersofOPC

DataAccessclientsandOPCservers..Thespecificationisaresultofan

analysisanddesignprocesstodevelopastandardinterfacetofacilitatethe

developmentofserversandclientsbymultiplevendorsthatshallinter-operate

seamlesslytogether.

Trademarks:

Mostcomputerandsoftwarebrandnameshavetrademarksorregisteredtrademarks.Theindividualtrademarkshavenotbeenlistedhere.

RequiredRuntimeEnvironment:

ThisspecificationrequiresWindows95,WindowsNT4.0orlater

ii

NON-EXCLUSIVELICENSEAGREEMENT

TheOPCFoundation,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.

iii

GENERALPROVISIONS:

ThisAgreementandUser’slicensetotheOPCMaterialsshallbeterminated（a）byUserceasingalluseoftheOPCMaterials,（b）byUserobtainingasupersedingversionoftheOPCMaterials,or（c）bytheOPCFoundation,atitsoption,ifUsercommitsamaterialbreachhereof.UponanyterminationofthisAgreement,UsershallimmediatelyceasealluseoftheOPCMaterials,destroyallcopiesthereoftheninitspossessionandtakesuchotheractionsastheOPCFoundationmayreasonablyrequesttoensurethatnocopiesoftheOPCMaterialslicensedunderthisAgreementremaininitspossession.

Usershallnotexportorre-exporttheOPCMaterialsoranyproductproduceddirectlybytheusethereoftoanypersonordestinationthatisnotauthorizedtoreceivethemundertheexportcontrollawsandregulationsoftheUnitedStates.

TheSoftwareandDocumentationareprovidedwithRestrictedRights.Use,duplicationordisclosurebytheU.S.governmentissubjecttorestrictionsassetforthin（a）thisAgreementpursuanttoDFARs

227.7202-3（a）;

（b）subparagraph（c）

（1）（i）oftheRightsinTechnicalDataandComputerSoftwareclauseat

DFARs252.227-7013;

or（c）theCommercialComputerSoftwareRestrictedRightsclauseatFAR52.227-

19subdivision（c）

（1）and

（2）,asapplicable.Contractor/manufactureristheOPCFoundation,P.O.Box

140524,Austin,Texas78714-0524.

ShouldanyprovisionofthisAgreementbeheldtobevoid,invalid,unenforceableorillegalbyacourt,thevalidityandenforceabilityoftheotherprovisionsshallnotbeaffectedthereby.

ThisAgreementshallbegovernedbyandconstruedunderthelawsoftheStateofMinnesota,excludingitschoiceorlawrules.

ThisAgreementembodiestheentireunderstandingbetweenthepartieswithrespectto,andsupersedesanypriorunderstandingoragreement（oralorwritten）relatingto,theOPCMaterials.

iv

Revision2.05AHighlights

Thisrevisionclarifiessection4.2.13Note（5）regardingroundupwhenconvertingfloatsanddoublestointegers.AlsocorrectanerrorinthepropertydefinitionsinAppendixD（200-207wereoffby1）.

Revision2.05Highlights

ThisrevisionincludesnumerousclarificationstoSection4.2.13regardingdataconversionbetweenNativeandRequesteddatatypes.

Revision2.04Highlights

ThisrevisionincludesadditionalminorclarificationstocertainambiguitieswhichwerediscoveredduringInteroperabilitysessionsandduringthedevelopmentoftheComplianceTest.Theaffectedsectionsinclude:

TimeBiasandDeadBanddiscussioninGroupObject:

GeneralProperties（4.5.1）.LocaleIDforSetState（tomakeitclearthebehaviourisoptional）.AdditionorClarificationoferrorreturnsE_INVALIDARGandS_FALSEreturnforGetItemProperties,LookupItemIDs,AddItems,ValidateItems,RemoveItems,SetActiveState,SetClientHandles,SetDataTypes,bothSyncIOandAsyncIOReadandWrite.InparticularforS_FALSE:

change'

waspartiallysuccessful'

to'

completedwithoneormoreerrors'

.Thisnowclearlyimpliesthatthemethodoutputs（specificallytheppErrorsreturns）aredefinedinthiscase.Otheradjustmentstothetextweretomakeerrorreturnsmoreconsistantacrossfunctions.ClarifyGetItemIDbehavior.InRefresh2andIOPCDataCallback:

:

OnDataChangetheTransactionIDparameterisclarified.Specifically:

0isanallowedvalue.SeealsotheintroductiontoOPCAsyncIO（4.5.6）.Alsoaddsection4.2.14asageneraldiscussionofClientandServerresponsibilitesregardingLocaleID.

Revision2.03Highlights

ThisrevisionincludesminorclarificationstotheDeadbanddiscussion（4.5.1.6）.Italsoclarifiesthebehaviorofemptyenumerators;

ThedescriptionsofIOPCServer:

CreateGroupEnumeratorandIOPCBrowseServerAddressSpace:

BrowseAccessPathshavebeenclarifiedandcorrected.TheyarenowconsistantwiththeexistingdescriptionofIOPCBrowseServerAddressSpace:

BrowseOPCItemIDs.

Revision2.02Highlights

ThisrevisionincludesminorclarificationstotheOPCItemPropertiesInterfacediscussions（4.4.6）,GroupStateMgt:

SetState（4.5.3.2）andtheold（1.0）StreamMarshallingDiscussion（4.6.4.6）.

Revision2.01Highlights

ThisrevisionincludesclarificationstothedwAccessRightsFilterinIOPCBrowseServerAddressSpaceandalsothediscussionofaccessrightsingeneral（section6.7.6）.

Revision2.0Highlights

Thisrevisionincludesenhancementstothe1.0ASpecification.Althoughchangesweremadethroughoutthedocument,thefollowingareasareorparticularimportance:

•ThisisnowreferedtoastheOPCDataAccessSpecificationasthereareotherOPCeffortsunderway.

•TheAutomationInterfacespecificationhasbeenseparatedintoaseparatedocument.

•Allprevious（1.0A）CustomInterfacesremaininplaceandunchangedexceptforminorclarifications.

•AsyncandexceptionbasedconnectionsshouldnowbedoneusingConnectionPointsratherthan

IDataObject.TheexistingIOPCAsyncIO,IDataObjectandClientsideIAdviseSinkinterfacessupport

‘oldstyle’（Version1.0）connections.ThenewIOPCAsyncIO2,IConnectionPointContainerandClientsideIOPCDataCallbackinterfacessupportthe‘newstyle’Version2.0connections.

•ThebehavioroftheexistingIOPCAsyncIO,IDataObjectandClientside