【精品】PLC通信协议.doc

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1、ComputerLinkMEWTOUOL—UOMFEATURES1.Dedicateprocedureandinteractiveoperation.2.ASCIIcodetransmissions.3.Theinitialrighttosendisatthepersonalcomputer.4.Therighttosendshiftseachtimethecommandmessageissent.DESCRIPTIONCommandMessage:Formats%AD(H)AD(L)#CommandcodeTextcode1B

2、CC(H)BCC(L)CRHorizontalparityrangeResponseMessage(normal):%AD(H)AD(L)$ResponsecodeTextcode1BCC(H)BCC(L)CRResponseMessage(error):%AD(H)AD(L)I•Error(H)Error(L)BCC(H)BCC(L)CRCOMMANDSCommandCodeDescriptionRCSReadsinglepointofcontactinformationWCSWritesinglepointofcontact

3、informationRCPReadpluralpointofcontactinformationWCPWritepluralpointofcontactinformationRCCReadwordunitofcontactinformationWCCWritewordunitofcontactinformationSCPresetwordunitincontactareaRDReaddataareaWDWritedataareaSDPresetofdataareaRSReadtimerandcountersetvalueare

4、aWSWritetimerandcountersetvalueareaRKReadtimerandcounterelapsedvalueareaWKWritetimerandcounterelapsedvalueareaMGRegistrationandresetofmonitorcontactMDRegistrationandresetofmonitordataMGMonitorexecutionRRReadsystemregisterWRWritesystemregisterRTReadProgrammableControl

5、ler(PC)statusRPReadprogramWPWriteprogramRMRemotecontrol(RUN/PROGRAMmodeswitching)ABTransmissionabortcommandCONTACTANDDATACODES1•ContactCodesContactCodeDescriptionXExternalInputYExternalOutputRInternalRelayTTimerCCounterLLinkRelay2.DataCodesDataCodeDescriptionDDataReg

6、isterLLinkRegisterFFileRegisterSPresetValueKElapsedValueIXIndexRegisterExternalInputIYIndexRegisterExternalOutputWXWordExternalInputWYWordExternalOutputWRWordInternalRelayWLWordLinkRelayERRORCODESErrorTypeCodeDescriptionLinkSystem20Undefined:Error21NACKerror:Eitherth

7、eremoteunitwasinincorrectlyrecognizedoradataerroroccurred.22WACKerror:Thereceivebufferoftheremoteunitisfull.23Duplicateporterror:Theremoteunitwassetwiththesameunitno.(01to16)asthelocalunit.24Transmissionformaterror:Attemptwasmadetosenddatathatdoesnotmatchthetransmiss

8、ionformat.Eitheraframeoverflowordataerroroccurred・25Hardwareerror:Transmissionsystemhardwarestopsoperatingnormally.26Unitno.error:T