profibus-dp各种报文的数据所表达的详细意义.pdf

profibus-dp各种报文的数据所表达的详细意义.pdf

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Chapter2Date11/04/99,page1PROFIBUSDPPROFIBUSDPthefastestfieldbussystemChapter2Date11/04/99,page2DPDetails?

class1master-?

centralcontrollerwhichexchangesdatawiththeconnectedI/Odevices（slaves）?

determinesthebaudrate?

handlestheToken?

severalclass1mastersarepermitted,typicaldevicesarePLC,PC?

class2master-?

diagnosticandstartuptool,typicallyaconfigurationtool?

cancontroloneslaveatatime?

slavestation-?

passivestationwhichacknowledgesmessagesoranswersperrequestChapter2Date11/04/99,page3DPDetails?

master-master,master-slavecommunicationClass1MasterClass2MasterSlaveReadingDiagnosisParameterAssignmentConfiguringDataExchangeReadingDiagnosisParameterAssignmentConfiguringAddressChangeReadingConfigurationReadingI/OControllingofoneSlaveReadingSlaveDiagnosis,Upload,DownloadActivatingBusParameter.Download,Activating/,Deact.Slaves,OperatingModeadevicecanconsistofmultiplefunctions,e.g.class1andclass2,class1andslaveChapter2Date11/04/99,page4DPDetails?

Adevicecanconsistofmultiplefunctions,e.g.class1andclass2,class1andslave,whichallows:

?

asimplemastermastercommunicationviathemaster-slavecombination?

wheneveronemasterhasthetokentheotherPLCcanbeaslavetothismasterPLCPLCPLC1-masterandslavePLC2-masterandslaveChapter2Date11/04/99,page5DPDetails?

Master-MastercommunicationbyusingaDP-DPgateway?

combinationoftwomonomastersystems?

simpledataexchangebetweenthetwomastersupto244bytePLCPLCChapter2Date11/04/99,page6Interoperability?

OpenConfigurationpermitsPlugandPlayPROFIBUSconfigurationtoolSystemconfigurationElectronicDeviceDataSheets（GSD-file）PLCPROFIBUSGSDGSDGSDGSDGSDGSDChapter2Date11/04/99,page7DeviceDescription?

GSDfile?

eachslaveormasterclass1deviceonPROFIBUSDPneedstohaveadevicedescriptionfile,thecharacteristicofeachPROFIBUS-DPdeviceisdescribedintheGSD-File?

theGSD-filecontainsalldevicespecificparameterse.g.:

?

SupportedBaudrate?

SupportedMessageLength?

Numberofinput/outputdata?

Meaningofdiagnosticmessages?

Optionsformodulardevicese.g.whichareavailable?

textfile（ASCII-format）?

eachconfigurationtoolrelatestotheGSDinformationChapter2Date11/04/99,page8DeviceDescription?

GSD-Filesarecreatedbythedevicevendors?

thePROFIBUSTradeOrganizationprovidesanGSD-EditorwhichmakesitveryeasytocreateGSD-Files?

theGSD-EditorcontainsaGSD-CheckerwhichguaranteestheconformanceoftheGSD-FilestothePROFIBUSstandard?

alibraryofGSD-FilesisprovidedatthePROFIBUSwebpage:

http:

/Chapter2Date11/04/99,page9DeviceDescription#Profibus_DP（M）:

（O）PrmText=.EndPrmTExt;（O）ExtUserPrmData=.EndExtUserPrmData;（M）GSD_Revision=1Vendor_Name=.;Slavespecificdata（M）Freeze_mode_supported=.;User_Prm_data.;Unit_diagnostic.;Module_Definition_List（M）Module=.EndModuleParametertext（O）ext.userparameterdata（O）mandatorygeneraldata（M）genericslavedata（M）devicerelatedslavedata（O）I/Odefinition（M）Chapter2Date11/04/99,page10GSDDetailsGeneralData#Profibus_DPIdentifierforaDPGSDfileGSD_Revision=1versionoftheGSDfileregardingthestandardVendor_Name=CompanyvendornameModel_Name=Productnamedevicename（whichwillbedisplayedintheconfigurationtool.Ident_Number=0x0000-uniqueIdentificationnumber,eachslaveandmasterclass1deviceneedstohave-aDP-mastercanidentifytheslavewithoutasignificantprotocoloverhead-controlfunction,themasterwillonlystartwithdatatransferiftheidentnumbermatchesthedeviceidentnumber-identnumberisissuedbythePTOChapter2Date11/04/99,page11GSDDetailsGeneralDataProtocol_Ident=0definessupportedprotocols,0-DP,1-DP/FMSStation_Type=0typeofdevice,0-Slave,1-MasterHardware_Release=V1.0HWversionofthedeviceSoftware_Release=V1.1SWversionofthedevice9.6_supp=11.5M_supp=1.allsupportedbaudrates,between9.6kBaudand12MBMaxTsdr_9.6=60.max.answeringtimerelatedtothebaudrateChapter2Date11/04/99,page12GSDDetailsGenericSlaveDataFreeze_Mode_supp=1synchronizationofInputdatasnapshotofInputs/groupingSync_Mode_supp=1Synchronizationofoutputdatae.g.drivesstartatthesamemoment?

SyncandFreezeisapplicationdriven?

Theapplicationinterfaceneedstoofferacapabilityfortheusertoactivatethesecommandsondemand?

SyncandFreezecommandsarerelatedtogroupsChapter2Date11/04/99,page13SyncandFreezeMasterSlavePhys.Outputsbuscycle1data“a”toSlave1

（2）data“a”toSlave2

（2）data“a”toSlave3

（1）data“a”toSlave4

（2）data“a”tooutputdata”a”tooutputdata”a”tooutputdata”a”tooutputDXtSyncbroadcasttoallSlaves（group2）buscycle2data“b”toSlave1

（2）data“b”toSlave2

（2）data“b”toSlave3

（1）data“b”toSlave4

（2）data“a”tooutputdata”a”tooutputdata”b”tooutputdata”a”tooutputDXtSyncbroadcasttoallSlaves（group2）tsynchronizeddata“a”too