汽车法规--ISO9141-2的国际标准文档4（pdf 58）

SSF14230RoadVehicles-DiagnosticSystemsKeywordProtocol2000-Part2-DataLinkLayerSwedishImplementationStandardBasedonISO14230-2DataLinkLayerStatus:Issue1Date:April22,1997ThisdocumentisbasedontheInternationalStandardISO14230KeywordProtocol2000andhasbeenfurtherdevelopedtomeetSwedishautomotivemanufacturer'srequirementsbytheSwedishVehicleDiagnosticsTaskForce.Itisbasedonmutualagreementbetweenthefollowingcompanies:••SaabAutomobileAB••SCANIAAB••VolvoCarCorp.••VolvoBusCorp.••MecelABFile:14230-2s.DOC/Definitionby“SamarbetsgruppenförSvenskFordonsdiagnos”/Author:L.MagnussonMecelABKeywordProtocol2000-Part2-DataLinkLayer,SwedishImplementationStandardSSF14230-2Issue1iiDocumentupdatesandissuehistoryThisdocumentcanberevisedandappearinseveralversions.Thedocumentwillbeclassifiedinordertoallowidentificationofupdatesandversions.A.DocumentstatusclassificationThedocumentisassignedthestatusOutline,DraftorIssue.ItwillhavetheOutlinestatusduringtheinitialphasewhenpartsofthedocumentarenotyetwritten.TheDraftstatusisenteredwhenacompletedocumentisready,whichcanbesubmittedforreviews.Thedraftisnotapproved.Thedraftstatuscanappearbetweenissues,andwillinthatcasebeindicatedtogetherwiththenewissuenumberE.g.DraftIssue2.AnIssueisestablishedwhenthedocumentisreviewed,correctedandapproved.B.VersionnumberandhistoryprocedureEachissueisgivenanumberandadate.Ahistoryrecordshallbekeptoverallissues.DocumentinOutlineandDraftstatusmayalsohaveahistoryrecord.C.HistoryIssue#DateComment1970422FrstissueKeywordProtocol2000-Part2-DataLinkLayer,SwedishImplementationStandardSSF14230-2Issue1iiiTableofContent1.SCOPE.......................................................................................................................................12.NORMATIVEREFERENCE.......................................................................................................23.PHYSICALTOPOLOGY............................................................................................................34.MESSAGESTRUCTURE...........................................................................................................44.1Header.............................................................................................................................44.1.1Formatbyte..............................................................................................................44.1.2Targetaddressbyte.................................................................................................54.1.2.1Physicaladdressing..........................................................................................54.1.2.2Functionaladdressing......................................................................................54.1.3Sourceaddressbyte................................................................................................54.1.4Lengthbyte..............................................................................................................54.1.5Useofheaderbytes.................................................................................................64.2DataBytes.......................................................................................................................64.3ChecksumByte...............................................................................................................64.4Timing.............................................................................................................................74.4.1TimingExceptions....................................................................................................94.4.2Periodictransmission...............................................................................................94.4.3Server(ECU)ResponseDataSegmentation.........................................................124.5EndOfMessage............................................................................................................125.COMMUNICATIONSERVICES................................................................................................135.1StartCommunicationService.........................................................................................145.1.1ServiceDefinition...................................................................................................145.1.1.1ServicePurpose.............................................................................................145.1.1.2ServiceTable.................................................................................................145.1.1.3ServiceProcedure..........................................................................................145.1.2Implementation......................................................................................................145.1.2.1Keybytes........................................................................................................155.1.2.2FastInitialisation.............................................................................................