松下电工PLC通讯协议

ComputerLink计算机链接MEWTOCOL-COM特点用于程序处理和交互式操作.数据传输采用ASCII码的形式.首先由计算机发送指令.由PLC对指令自动进行相应响应.基本描述指令格式校验数据范围校验数据范围指令信息:%AD(H)AD(L)#指令代码文本代码1BCC(H)BCC(L)CR应答信息(正常时):%AD(H)AD(L)$响应代码文本代码1BCC(H)BCC(L)CR应答信息(发生错误时):%AD(H)AD(L)!错误代码(H)错误代码(L)BCC(H)BCC(L)CR

指令一览表指令功能描述RCSReadsinglepointofcontactinformation读取单个触点的状态信息WCSWritesinglepointofcontactinformation写入单个触点的状态信息RCPReadpluralpointofcontactinformation读取多个触点的状态信息WCPWritepluralpointofcontactinformation写入多个触点的状态信息RCCReadwordunitofcontactinformation读取字单位的触点的状态信息WCCWritewordunitofcontactinformation写入字单位的触点的状态信息SCPresetwordunitincontactarea预置字单位的触点RDReaddataarea读取数据寄存器值WDWritedataarea写入数据寄存器值SDPresetofdataarea预置数据寄存器值RSReadtimerandcountersetvaluearea读取定时器/计数器目标值WSWritetimerandcountersetvaluearea写入定时器/计数器目标值RKReadtimerandcounterelapsedvaluearea读取定时器/计数器经过值WKWritetimerandcounterelapsedvaluearea写入定时器/计数器经过值MCRegistrationandresetofmonitorcontact登录及复位监控触点MDRegistrationandresetofmonitordata登录及位监控数据MGMonitorexecution执行监控RRReadsystemregister读取系统寄存器WRWritesystemregister写入系统寄存器RTReadProgrammableController(PC)status读取PLC当前状态RPReadprogram读取程序WPWriteprogram写入程序RMRemotecontrol(RUN/PROGRAMmodeswitching)远程控制(运行/编程模式切换)ABTransmissionabortcommand传输终止指令

触点和数据代码触点代码触点代码说明X外部输入Y外部输出R内部继电器T定时器C计数器L链接继电器数据代码数据代码说明D数据寄存器DTL链接寄存器LDF文件寄存器FLS目标值SVK经过值EVIX索引寄存器IXIY索引寄存器IYWX字单位外部输入WXWY字单位外部输出WYWR字单位内部继电器WRWL字单位链接继电器WL

错误代码错误类型代码说明链接系统错误2021222324252627282930未定义:NACK错误:WACK错误:多重端口错误:传输格式错误:硬件错误:单元号错误:不支持错误:无应答错误:缓冲区关闭错误:超时错误:远程单元无法被正确识别，或者发生了数据错误.用于远程单元的接收缓冲区已满.远程单元编号(01至16)设置与本地单元重复.试图发送不符合传输格式的数据.或者某一帧数据溢出或发生了数据错误.传输系统硬件停止操作.远程单元的编号设置超出01至63的范围.接收方数据帧溢出.试图在不同的模块之间发送不同帧长度的数据.远程单元不存在.(超时)试图发送或接收处于关闭状态的缓冲区.持续处于传输禁止状态.基本程序错误40414243BCC错误:格式错误:不支持错误:处理步骤错误:在指令数据中发生传输错误.所发送的指令信息不符合传输格式.例:指令中的数据项目过多或不足.缺少"#"符号及"目标站号".发送了一个未被支持的指令.向未被支持的目标站发送了指令.在处于传输请求信息挂起时,发送了其他指令.处理系统错误50515253链接设置错误:同时操作错误:传输禁止错误:忙错误:设置了实际不存在的链接编号.当向其他单元发出指令时,本地单元的传输缓冲区已满.无法向其他单元传输.在接收到指令时,正在处理其他指令.

错误类型代码说明PLC错误60616263656667参数错误:数据错误:Registrationerror:PLC模式错误:保护错误:地址错误:缺少数据错误:在指令中包含有无法使用的代码,或者代码没有附带区域指定参数(X,Y,D,等以外.)指令中的代码带有非法的功能指定参数(0,1,2,等).触点编号,区域编号,数据代码格式(BCD,hex,等.),上溢出,下溢出以及区域指定错误.Excessivenumberofregistrationsoroperationinunregisteredstate.(monitorregistration,traceregistration,etc.)Whenaregistrationoverflowoccurs,performaregistrationreset.OperatingmodeofthePLCwhenacommandwassentdoesnotallowthecommandtobeprocessedWriteoperationwasperformedtotheprogramareaorsystemregisterinthememoryprotectstates.Address(programaddress,absoluteaddress,etc.)datacodeformat(BCD,hex,etc.),overflow,underfloworrangespecificationerror.Readdatadoesnotexist.(Datanotwrittenwithacommentregistrationwasread.)

指令说明读取单触点状态(指令代码:RCS)ContactAreaRead(singlepoint)指令%#RCS触点代码(1字符)触点编号(4字符)BCC(H)BCC(L)CR单触点指定BCDHEX(3digits)(1digit)单触点指定BCDHEX(3digits)(1digit)目标站号(L)目标站号(L)目标站号(H)应答读取正常%$RC触点数据(1字符)BCC(H)BCC(L)CR源站号(L)源站号(H)源站号(L)源站号(H)读取错误%!BCC(H)BCC(L)CR参阅说明.错误代码源站号(L)源站号参阅说明.错误代码源站号(L)源站号(H)说明:字符"$"表示正常的应答.触点数据Contactdata触点状态数据OFF"0"ON"1"

写入单触点状态(指令代码:WCS)ContactAreaWrite(singlepoint)指令%#WCS指令代码(1字符)触点编号(4字符)触点数据(1字符)BCC(H)BCC(L)CR单触点指定参见注释.BCDHEX(3digits)(1digit)单触点指定参见注释.BCDHEX(3digits)(1digit)目标站号(L)目标站号(L)目标站号(H)Y,R,LY,R,L应答读取正常%$WCBCC(H)BCC(L)CR源站号(L)源站号源站号(L)源站号(H)读取错误%!BCC(H)BCC(L)CR错误代码源站号(L)源站号(H)错误代码源站号(L)源站号(H)说明:字符"$"表示正常的应答.触点数据Contactdata触点状态数据OFF"0"ON"1"

3.SupplementaryDescriptionofRead/WriteContactArea(Singlepoint)[Timer(T),Counter(C),Contractcode]ContactNo.(4bytes)ContactNo.(4bytes)ContactNo.(4bytes)T,CX,Y,R,LBCD0(3digits)BCDHEX(3digits)(1digit)T,CX,Y,R,LBCD0(3digits)BCDHEX(3digits)(1digit)Evenifano.whichisusedinternallyasT(C)isreadasC(T)no.itdoesnotresultinanerrorandthecontactinformationfortheno.returns.(wordunitblock)RCC,WCCTimerandcountercontactsarenothandledidwordunitsIfawordno.isspecifiedwiththeTorCcontactcode,theinformationshownbelowreturns.ContactCodeCrowdNo.ResponseinformationT(C)0T(C):0to15T(C):16to31T(C):32to47T(C):48to63::::T(C):240to255

4.读取多触点状态(指令代码:RCP)ReadContractArea(pluralpoint)指令%#RCPn(1字符)触点代码(1字符)触点编号.(1)(4字符)多触点指定BCDHEX(3digits)(1digit)多触点指定BCDHEX(3digits)(1digit)目标站号(L)目标站号(L)目标站号(H)触点编号(n:1to8)触点编号(n:1to8) n=1-8n=1-8触点代码(1字符)触点编号.(n)(4字符)BCC(H)BCC(L)CR应答读取正常%$RC触点1数据(1字符)触点n数据(1字符)BCC(H)BCC(L)CR源地址(L)源地址(H)参见说明.源地址(L)源地址(H)参见说明.读取错误%!BCC(H)BCC(L)CR源地址(L)源地址(H)错误代码源地址(L)源地址(H)错误代码说明:字符"$"表示正常应答.触点数据触点状态数据OFF"0"ON"1"

5.写入多触点状态(指令代码:WCP)WriteContractArea(pluralpoint)指令%#WCPn(1字符)触点1代码(1字符)触点1编号.(4字符)触点数据(1字符)多触点指定BCDHEX(3digits)(1digit)多触点指定BCDHEX(3digits)(1digit)Y,R,L目标地址(L)Y,R,L目标地址(L)目标地址(H)n:1to8n:1to8 n=1-8n=1-8触点n代码(1字符)触点n编号.(4字符)触点数据(1字符)BCC(H)BCC(L)CR应答读取正常%$WCBCC(H)BCC(L)CR源地址(L)源地址源地址(L)源地址(H)读取错误%!BCC(H)BCC(L)CR错误代码源地址(L)源地址(H)错误代码源地址(L)源地址(H)说明:字符"$"表示正常应答.触点数据触点状态数据OFF"0"ON"1"

6.ContactAreaRead(wordunitblock)(Commandcode:RCC)CommandBCD%BCD#RCCContactcode(1character)StartwordNo.(4characters)EndwordNo.(4characters)BCC(H)BCC(L)CRX,Y,R,LBCDCrowdhandlingBCDX,Y,R,LBCDCrowdhandlingBCDDestination(L)Destination(H)Destination(L)Destination(H)ResponseReadOKHEX%HEX$RCContactdata1(4character)Contactdatan(4character)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRHEXErrorcodeSource(L)Source(H)HEXErrorcodeSource(L)Source(H)Note:ContactcodesarethesameasforthereadsinglepointContactDataSequenceWordFCB87430③④①②Contactdata①②③④

7.WriteContactArea(wordunitblock)(Commandcode:WCC)CommandHEXHEXBCD%HEXHEXBCD#WCCContactcode(1character)StartCHNo.(4characters)EndCHNo.(4characters)Y,R,LBCDCrowdhandlingBCDY,R,LBCDCrowdhandlingBCDDestination(L)Destination(H)Destination(L)Destination(H)HEXData1HEX(4characters)Datan(4characters)BCC(H)BCC(L)CRResponseReadOK%$WCBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:ContactcodesarethesameasforthereadsinglepointContactDataSequenceWordFCB87430③④①②Contactdata①②③④

8.PresetWordUnitinContactArea(Commandcode:SC)CommandHEX%HEX#SCContactcode(1character)StartwordNo.(4characters)EndwordNo.(4characters)Wordpresetpattern(4characters)BCC(H)BCC(L)CRBCDBCDY,R,LBCDBCDBCDY,R,LBCDDestination(L)Destination(L)Destination(H)ResponsePresetOK%$SCBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)PresetError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)

9.ReadDataArea(Commandcode:RD)CommandBCDBCD%BCDBCD#RDDatacode(1character)StartdataNo.(5characters)EnddataNo.(5characters)BCC(H)BCC(L)CRD,L,FBCDD,L,FBCDDestination(L)Destination(L)Destination(H)ResponseReadOKHEXHEX%HEXHEX$RDData1(4characters)Datan(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:Data(4characters)D③④①②FCData①②③④

Detailsofacommandanditsresponseareillustratedintheexample.ReadingfromtheDataArea(Readcommand)ThecontentsoftheProgrammableController's(PLC's)dataareaarereadbythehostcomputer.ProgramExample:ThedatacontentsinDT1105toDT1107oftheProgrammableController(PLC)areread.AssumethatDT1105toDT1107containthefollowingnumericvalues. DT1105=0063H DT1106=3344H DT1107=000AHThecommandfromthehostcomputerisshownbelow.%01#RDD011050110757CRHeaderDestinationCommandnameDT1105DT1107BCCTerminatorTheresponsefromtheProgrammableController(PLC)isshownbelow%01$RD630044330A0062CRHeaderDestinationCommandnameDataofDataofDataofBCCTerminatorDT1105DT1106DT1107Note:The"$"indicatesanormalresponse.

ForIndexRegisterCommand%#RDDatacode(1character)"0"(9characters)BCC(H)BCC(L)CRSeenoteBCDSeenoteBCDDestination(L)Destination(L)Destination(H)ResponseReadOK(forIX,IY)HEXHEX%HEXHEX$RDData1(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadOK(forID)HEX(loworder)HEXHEX(loworder)HEX(highorder)$RDData(IX)(4characters)Data(IY)(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:DataCodeDataCodeIX"I""X"IY"I""Y"IX,IY"I""D"

10.WriteDataArea(Commandcode:WD)CommandHEXHEXBCD%HEXHEXBCD#WDDatacode(1character)StartdataNo.(5characters)EnddataNo.(5characters)D,L,FBCDD,L,FBCDDestination(L)Destination(H)Destination(L)Destination(H)HEXWriteDataHEX(4characters)WriteData(4characters)BCC(H)BCC(L)CRResponseWriteOK%$WDBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)WriteError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)WritetoIX,IY(betweenWDandBCC)HEXDatacodeHEX(2characters)"0"(9characters)Writedata(4characters)Batchprocessing(writetoIX,IY32-bit)(betweenWDandBCC)Datacode(2characters)"0"(9characters)Writedata(4characters)Writedata(4characters)IY(highorder)IX(loworder)DIIIIY(highorder)IX(loworder)DIII

Detailsofacommandanditsresponseareillustratedintheexamples.WritingtotheDataArea(WDcommand)AnumericvalueiswrittentotheProgrammableController's(PLC's)dataareabythehostcomputer.ProgramExample:WordnumericvaluesarewrittentoDT1toDT3oftheProgrammableController(PLC).TheresponsefromtheProgrammableController(PLC)isshownbelow.ThecontentsoftheProgrammableController's(PLC's)dataareaarereadbythehostcomputer.%01#WDD00001000030500071500095DCRHeaderDestinationCommandnameFromDT1DT3DataofDataofDataofBCCTerminatorDT1DT2DT3TheresponsefromtheProgrammableController(PLC)isshownbelow.%01$WD13CRHeaderDestinationCommandnameBCCTerminatorNote:The"$"indicatesanormalresponse.

11.PresetofDataArea(Commandcode:SD)CommandHEX%HEX#SDContactcode(1character)StartdataNo.(5characters)EnddataNo.(5characters)Wordpresetpattern(4characters)BCC(H)BCC(L)CRD,L,FBCDBCDD,L,FBCDBCDDestination(L)Destination(L)Destination(H)ResponsePresetOK%$SDBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)PresetError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Thesameword(2-byte)dataiswrittentothespecifiedrangeofthedataareaorlinkdataarea.

12.ReadSetValueArea(Commandcode:RS)CommandBCDBCD%BCDBCD#RSStartmoduleNo.(4characters)EndmoduleNo.(4characters)BCC(H)BCC(L)CRDestination(L)Destination(L)Destination(H)ResponseReadOKHEXHEX%HEXHEX$RSData1(4characters)Datan(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:Dataishandlein16-bit.Themaximumnumberofspecifiedmodulesis24.

13.WriteSetValueArea(Commandcode:WS)CommandHEXHEXBCDBCD%HEXHEXBCDBCD#WSStartmoduleNo.(4characters)EndmoduleNo.(4characters)Destination(L)Destination(L)Destination(H)Data1(4characters)Datan(4characters)BCC(H)BCC(L)CRResponseWriteOK%$WSBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)WriteError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)

14.ReadCount(Elapsed)ValueArea(Commandcode:RK)CommandBCDBCD%BCDBCD#RKStartmoduleNo.(4characters)EndmoduleNo.(4characters)BCC(H)BCC(L)CRDestination(L)Destination(L)Destination(H)ResponseReadOKHEXHEX%HEXHEX$RKData1(4characters)Datan(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:Dataishandlein16-bit.Themaximumnumberofspecifiedmodulesis24.

15.WriteCount(Elapsed)ValueArea(Commandcode:WK)CommandHEXHEXBCDBCD%HEXHEXBCDBCD#WKStartmoduleNo.(4characters)EndmoduleNo.(4characters)Destination(L)Destination(L)Destination(H)Data1(4characters)Datan(4characters)BCC(H)BCC(L)CRResponseWriteOK%$WKBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)WriteError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)

16.MonitorContactRegistrationandReset(Commandcode:MC)Command(Registration)%#MCContactcode(1character)ContactNo.(4characters)BCDHEX(3digits)(1digit)X,Y,R,T,C,LBCDHEX(3digits)(1digit)X,Y,R,T,C,LDestination(L)Destination(L)Destination(H)Contactcode(1character)ContactNo.(4characters)BCC(H)BCC(L)CR20pointsmax.20pointsmax.(RegistrationReset)%#MCFFFFFBCC(H)BCC(L)CRDestination(L)Destination(L)Destination(H)ResponseRegistrationOK%$MCBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)RegistrationError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:Ifthecontactcodeis"*",itisadummyregistration.Themaximumnumberofregistrationsperunitis80points.(Upto20pointspercommand.)

17.MonitorDataRegistrationandReset(Commandcode:MD)Command(Registration)%#MDDatacode(1character)DataNo.(5characters)BCDBCDD,L,F,S,KDestination(L)D,L,F,S,KDestination(L)Destination(H)Datacode(1character)DataNo.(5characters)BCC(H)BCC(L)CR18pointsmax.18pointsmax.(RegistrationReset)%#MDFFFFFFBCC(H)BCC(L)CRDestination(L)Destination(L)Destination(H)DatatypeDatatypeDataCodeDataregisterDLinkregisterLFileregisterFSetvalueSElapsedvalueKIndexregisterXIXIndexregisterYIYWordexternalinputWXWordexternaloutputWYWordinternalrelayWRWordlinkrelayWLResponseRegistrationOK%$MDBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)2characters2characters(seenote)RegistrationError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Themaximumnumberofregistrationsperunitis16.Adummyregistration("*")isnotallowedformonitordataregistration.Note:FordatacodesIXandIYwherethefirstcharacterisI,thefirstcharacterinthedataNo.separatesXandY.Theremaining4charactersinthedataNo.are0FordatacodesWX,WY,WRandWLwherethefirstcharacterisW,thefirstcharacterinthedataNo.separatesX,Y,RandL.Theremaining4charactersinthedataNo.usethe3low-ordercharacters.The1high-ordercharacteris0.

18.MonitorExecution(Commandcode:MG)Command%#MGBCC(H)BCC(L)CRDestination(L)Destination(H)Destination(L)Destination(H)ResponseMonitorOK(L)HEX(H)(L)HEX(L)HEX(H)(L)HEX(H)(L)HEX(even)$MGBasecounter(1characters)Numberofcharactersforcontacts(2characters)Contactdata1(2characters)Contactdatan(2characters)Source(L)Source(H)Source(L)Source(H)(H)(L)(H)(L)(H)(L)(H)(L)(L)Numberofcharactersfordata(H)(L)(H)(L)(H)(L)(H)(L)(L)(2characters)Data1(4characters)Datan(4characters)BCC(H)BCC(L)CRLoworderHighorderLoworderHighorderLoworderHighorderLoworderHighorderHEXHEXHEX(multipleof4)HEXHEXHEX(multipleof4)MonitorError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:Inthecontactdata,2charactersofdatafor8contactsarereturned.Dataconsistsonedataitemwith4characters.NumberofcharactersconsistsofbinarydataconvertedtoASCII.Thebasecounterreturns"A"whenthenumberofsequencerscansfromthepreviousresponsetothecurrentresponseis10ormore.

19.ReadSystemRegister(Commandcode:RR)CommandBCDBCD%BCDBCD#RRDummyStartregisterNo.(3characters)EndregisterNo.(3characters)BCC(H)BCC(L)CR00Destination(L)Destination(L)Destination(H)ResponseReadOKHEXHEX%HEXHEX$RRData1(4characters)Datan(4characters)BCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)

20.WriteSystemRegister(Commandcode:WR)CommandHEXHEXBCDBCD%HEXHEXBCDBCD#WRDummyStartregisterNo.(3characters)EndregisterNo.(3characters)00Destination(L)Destination(L)Destination(H)Data1(4characters)Datan(4characters)BCC(H)BCC(L)CRResponseWriteOK%$WRBCC(H)BCC(L)CRSource(L)Source(H)Source(L)Source(H)WriteError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)

21.ReadProgrammableController(PLC)Status(Commandcode:RT)Command%#RTBCC(H)BCC(L)CRDestination(L)Destination(H)Destination(L)Destination(H)(seenote.)(seenote.)Response(seenote.)(seenote.)(seenote.)ReadOK(seenote.)%$RTModelcode(2characters)Version(2characters)Programcapacity(2characters)Operatingmode(2characters)Source(L)Source(H)Source(L)Source(H)Systemlinkinformation(2characters)Errorflag(2characters)DiagnosticerrorNo.(4characters)BCC(H)BCC(L)CRHEX(loworder)(seenote.)HEX(highorder)HEX(loworder)(seenote.)HEX(highorder)ReadError%!BCC(H)BCC(L)CRErrorcodeSource(L)Source(H)ErrorcodeSource(L)Source(H)Note:ModelCodeModelFP0FP1FP2FP3FP5FP10FP10SFP10SHCode0302ErrorFlag OperatingModeCalculationerrorflagBatteryerrorholdBatteryerrorCalculationerrorflagBatteryerrorholdBatteryerrorI/OverificationerrorAdvancedfunctionuniterrorFuseopendetectionMomentarypowerfailuredetectionDiagnosticerror"1""0"REM/REMMessageyes/noStepexecution/StepexecutionOutputrefreshyes/noBRKyes/noBRK/BRKTEST/TESTRUN/PROGErrorFlagProgramCapacityCodeLastStepAddress2K021534(Theprogramcapaci