外文翻译---错误处理

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1、附录：ERRORHANDLINGErrorDetection：Thereare5differenterrortypes(whicharenotmutuallyexclusive)：BITERROR：Aunitthatissendingabitonthebusalsomonitorsthebus.ABITERRORhastobedetectedatthatbittime，whenthebitvaluethatismonitoredisdifferentfromthebitvaluethatissent.Anexceptionisthesendingofa“rece

2、ssive”bitduringthestuffedbitstreamoftheARBITRATIONFIELDorduringtheACKSLOT.ThennoBITERRORoccurswhena“dominant”bitismonitored.ATRANSMITTERsendingaPASSIVEERRORFLAGanddetectinga“dominant”bitdoesnotinterpretthisasaBITERROR.STUFFERROR：ASTUFFERRORhastobedetectedatthebittimeofthe6thconsecuti

3、veequalbitlevelinamessagefieldthatshouldbecodedbythemethodofbitstuffing.CRCERROR：TheCRCsequenceconsistsoftheresultoftheCRCcalculationbythetransmitter.ThereceiverscalculatetheCRCinthesamewayasthetransmitter.ACRCERRORhastobedetected，ifthecalculatedresultisnotthesameasthatreceivedintheC

4、RCsequence.FORMERROR：AFORMERRORhastobedetectedwhenafixed-formbitfieldcontainsoneormoreillegalbits.(Note，thatforaReceiveradominantbitduringthelastbitofENDORFRAMEisnottreatedasFORMERROR).ACKNOWLEDGMENTERRORAnACKNOWLEDGMENTERRORhastobedetectedbyatransmitterwheneveritdoesnotmonitora“domi

5、nant”bitduringtheACKSLOT.ErrorSignaling：AstationdetectinganerrorconditionsignalsthisbytransmittinganERRORFLAG.Foran“erroractive”nodeitisanACTIVEERRORFLAG，foran“errorpassive”nodeitisaPASSIVEERRORFLAG.WheneveraBITERROR，aSTUFFERROR，aFORMERRORoranACKNOWLEDGMENTERRORisdetectedbyanystation

6、，transmissionofanERRORFLAGisstartedattherespectivestationatthenextbit.WheneveraCRCERRORisdetected，transmissionofanERRORFLAGstartsatthebitfollowingtheACKDELIMITER，unlessanERRORFLAGforanotherconditionhasalreadybeenstarted.FAULTCONFINEMENTOFCAN：Withrespecttofaultconfinementaunitmaybeino

7、neofthreestates：“erroractive”“errorpassive”“busoff”An“erroractive”unitcannormallytakepartinbuscommunicationandsendsanACTIVEERRORFLAGwhenanerrorhasbeendetected.An“errorpassive”unitmustnotsendanACTIVEERRORFLAG.Ittakespartinbuscommunication，butwhenanerrorhasbeendetectedonlyaPASSIVEERROR

8、FLAGissent.A