Sinumerik Interface Signals.docx

Sinumerik Interface Signals.docx

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SinumerikInterfaceSignals

TableofContents

SignalFlowNCPLC2

InterfaceStructure4

PLCBasicProgram6

BasicSignals（NCPLC）8

EnablesandAxis-SpecificSignals10

AxisMovement12

ProgramProcessing14

M00,M02andM3016

ReferencePointApproach18

MachineControlPanel20

MCommands22

SignalFlowNCPLC

TheinterfacesignalsaretransferredbetweenNCandPLC.SomeofthesignalsarestandardizedaccordingtoVDI（VerbandDeutscheIngenieure–AssociationofGermanEngineers）.Thedataexchangetakesplaceviadefineddatablocks.TheinterfacesignalsandtheI/OsignalsforthemachinecanbeevaluatedinthePLCprogram.RelevantlinksimplementenablesordisablesfortheNCfunctions.Differentiationismadebetweentwotransferdirections.

FromNCtoPLC

InformationfromtheNCismadeavailableontheinterfaceforevaluationinthePLCprogram.Informationmaybesignalsdescribingthestatusofchannelsandoperatingmodegroups,READYsignalsforthevariouscomponents,whetherapartsprogramisprocessed,orwhetheranaxistraverses.Thetechnologicalfunctionsofthepartsprogram（M-,S-,T-,H-,andFcommands）aretransferred.

FromPLCtoNC

ThesignalsfromthePLCare,forexample,enable/disablesignals（closed-loopcontrollerenable,pulseenable,etc.）andaresetorresetinthePLCprogrambyevaluationofthecurrentmachinestate.ThePLCprogramalsorequeststhevariousoperatingmodesorapartsprogramstart,traversingoftheaxesinJOGmode,etc.intheNC.

Viaspecialfunctionblocks（FB2,3,5）aselectionofalltheNCdata（MD,Rparameters,toolcompensations,actualvalues,etc.）canbetransferredtothePLC,orthePLCcanchangethem.

NCPLCsignals

（responseregardingtheNCstatus,M-,S-,T-,Hcommands）

PLCNCsignals

（enablesignals,operatingmodes,etc.）

NC

PLC

InterfaceStructure

ThePLCuserinterfaceforthe840D,810DandFM–NCisidentical,exceptforthequantityframework.Duetothemultitudeofsignals,displayininterfaceDBsisnecessary.FromthePLCprogram’spoint-of-view,theseareglobalDBs.ThebasicprogramgeneratestheseDBsduringsystemstart-up,basedoncurrentNCmachinedata（numberofchannels,axes,etc.）.TheadvantageisthatonlyasmuchPLCRAMisreservedasisactuallyrequiredforthecurrentmachineconfiguration.

ThePLC/NCKinterfaceisgeneratedpartlybyadatainterfaceandpartlybyafunctioninterface.Statussignals,controlsignals,helpfunctions,andGfunctionsarecontainedinthedatainterfacewhilejobsaretransferredfromthePLCtotheNCK（NCkernel）viathefunctioninterface.

DataInterface

Thedatainterfaceissubdividedintothefollowinggroups:

▪NCkernel-specificsignals

▪Operatingmodegroup-specific（BAG）signals

▪Channel-specificsignals

▪Axis/spindle/drive-specificsignals

PLCBasicProgram

ThePLCbasicprogramorganizestheexchangeofsignalsanddatabetweenthePLCuserprogramandtheNCK-（NCkernel）,MMC–（multipointinterface）andMSTT–（machinecontrolpanel）area.Differentiationmustbemadebetweenthefollowinggroupsofsignalsanddata:

∙Cyclicalsignalexchange

∙Event-drivensignalexchange

∙Messages

CyclicalSignalExchange

Thesignalsthatareexchangedcyclicallyconsistprimarilyofbitarrays.

∙TheycontaincommandsthePLCsendstotheNCkernel（suchasstart,stop,etc.）andstatusinformationabouttheNCkernel（suchasprogramisrunning,programisinterrupted,etc.）.

∙Thebitarraysaredividedintosignalsfor

BAGs（operatingmodegroups）,

Channels,

Axes/spindles

GeneralNCkernelsignals.

ThebasicprogramcarriesoutthecyclicalsignalexchangeatthebeginningofthePLCcycle（OB1）.Thisguarantees,forexample,thatsignalsfromtheNCkernelremainconstantthroughoutacycle.

Event-DrivenSignalExchange

PLCfunctionsthatmustbecarriedoutindependenceontheworkpieceprogramaretriggeredviahelpfunctionsintheworkpieceprogram.Ifablockwithhelpfunctionsisexecuted,itdependsonthetypeofhelpfunctionwhethertheNCkernelmustwaituntilthisfunctionisexecuted（suchasatoolchange）,orwhetherthisfunctionisexecutedsimultaneouslywithworkpieceprocessing（suchasforprovidingtoolsformillingmachineswithchainmagazines）.

InordertoinfluenceNCprocessinglittleaspossible,thedatatransfermusttakeplaceasquicklyaspossibleandstillbesafe.Datatransferisthereforeinterrupt-drivenandacknowledgement-driven.Thebasicprogramevaluatesthesignalsanddata,acknowledgesthesetotheNCkernel,andtransfersthedatatotheuserinterfaceatcyclestart.Ifthisdatadoesnotrequireauseracknowledgement,theNCprocessingisnotinfluenced.

Messages

Thebasicprogramisresponsibleforrecordingandpre-processingusermessages.Themessagesignalsaretransferredtothebasicprogramviaanacknowledgedbitarrayandareenteredinthediagnosticsbuffer.

BasicSignals（NCPLC）

NCReady

Afterthesupplyvoltageisswitchedon,allvoltagesinsidethecontrollerareestablished,andthecontrollerisincyclicaloperation.ThentheNCsendsthe“NCReady“signaltothePLC.

The“NCready“signalisresetwhenthereareundervoltagesorovervoltages,orinthecaseofmissingreadysignalsfortheindividualcomponents.

Ifthesignalis0,thereisaremovaloftheclosed-loopcontrollerenable,andcyclicalprocessingoftheinterfaceends.

611DReady

Allavailabledrivessignalthereadystate.Assoonasadrivesignalsthenotready（DRIVEready=0）state,the“611D-ready“signalisreset.

MMC-CPU1_Ready

TheMMC-CPUisreadyandcyclicallysignalstheNC.

NCKernelInterruptPending

ThereisanerrormessageinatleastoneoftheNCchannels.

NCKernelBatteryInterrupt

Thebatteryvoltageisinthewarningrange（2.7–2.9v）orhasdroppedbelowthewarningrange（≤2.6v）.Thiswouldresultinalossofthebuffereddata.

EnablesandAxis-SpecificSignals

InputDisable

The“inputdisable“signaliseffectiveonlyintheAUTOMATICandMDA（ManualDataAutomatic）operatingmodes.

Foranedgechangefrom0to1,datatransferofthenextblockforthepartsprogramisdisabledintheinterpolator.

AnautomaticblockchangefromthePLCprogramcanbeinfluencedbythe“inputdisable“signal.

FeedDisable

Thesignaliseffectiveinonechannelforalloperatingmodes.Withsignalstate0,allaxescanbetraversed,ifatraverserequestispresent.

Ifthesignalstatechangesto1,theaxesarebrakedonthecontour,thefollowingerroriscleared,andthepositionclosed-loopcontrolremainsactive.

Closed-LoopControllerEnable

Thepositioncontrolloopisclosedfora0-1edge.Anedgechangeof1-0leadstofastbraking,andthepositioncontrolloopisopened.Theactualvaluecontinuestoberecorded,andtheclosed-loopcontrollerreleaseforthedriveisremoved.

Theclosed-loopcontrollerreleasecanalsoberesetinternallytothecontrollerforvariousfaults,suchasfaultsinthepositionmeasuringsystem.

Atypicalapplicationfortheclosed-loopcontrollerreleaseisclampinganaxis.

PulseEnable

Fora1signal,thepulseenablefortherelevantdriveispresent.

Ifthepulseenableisresetforatraversingaxis,theaxiscoaststoastandstill.

AxisDisable

Fora1signal,nosetpointsareoutputonthepositioncontroller.Notraversingmovementtakesplace;onlythedisplaychanges.Thissignalcanbeusedtoapproachandtestthepartsprograms.

Follow-UpOperation

Thesetpointpositionconstantlyfollowstheactualvalue.Stoppagetolerancemonitoringandclampingtolerancemonitoringareineffective.

AxisMovement

Ifthefeeddisableandtheclosed-loopcontrollerreleasesaresetcorrespondingly,theaffectedaxescanbetraversed.Themachinecontrolpanelkeysorthepartsprogramtriggersthenecessarysignals.

FeedHalt

Thesignaliseffectiveinalloperatingmodes.Witha1signal,theaxesareguided,braked,andthefollowingerroriscleared.Thepositioncontrolloopremainsclosed.Ingeneral,thefeedstart/stepkeysonthemachinecontrolpanelareusedtosetorresetthissignal.

TraversingKeys+/-

Therelevantaxisisstartedinaplusorminusdirectionwithanedgechangeof01.

Differentiationismadebetweencontinuousorincrementaltraversing.Withincrementaltraversingoftheaxes,afixedpathiscovered,forexample100m.ViaJOGsettingdata,thereisthepossibilitytosetjoggingmodeorcontinuousoperation.Injoggingmode,theaxisremainsstoppedafterthekeyhasbeenreleased.

TraversingCommand+/-

Atraversingcommandistriggeredinvariouswaysinthedifferentaxesoperatingmodes.

The+/-traversingkeysonthemachinecontrolpanelstartatraversingmovementinJOGmode.AnewlyprogrammedcoordinatevaluefortheaxesleadstomovementinAUTOMATIC/MDAoperation.

ThetraversingcommandisaresponsefromtheNCtothePLC,containingtheinformationthattheaxisisbeingtraversedorshouldbetraversed.

ProgramProcessing

IftheinputdisableissettoØ,thefirstdatatransfertotheinterpolatoriseffectedviablockpre-processingimmediatelyaftertheNC-START.Thefirstprogramblockcanbeprocessed.Duringthisprocessing,thereiscyclicsignalexchangeviatheinterfacebetweentheNC-PLC.

NCStart

InAUTOMATIC/MDAoperation,allprocessingofthepartsprogramisstartedwhena1signalislaunched.TherearekeysavailableforNCstartandNCstoponthemachinecontrolpanel.

ProgramStatusIsRunning

Withsignal1,theNCsignalsactiveprocessingofapartsprogramtothePLC.Thismakesitpossibletolockcertainoperatingcapabilities（override=100%,etc.）,forexample,inthePLCprogram.

ExactPositioningRough/Fine

TolerancewindowscanbespecifiedviaMDfor