高速计数器模组VB-1HC说明书(5)

适用于plc的工程应用人员

10)BFM#29Errorstatus

ErrorstatusintheVB-1HCcanbecheckedbyreadingthecontentsofb0tob7ofBFM#29toauxiliaryrelaysofthePLC.

BFM#29b0b1b2b3b4b5b6b7b8b9b10-b15

Errorstatus

Setwhenanyofb1tob7isON.

Setwhenthevalueoftheringlengthiswrittenincorrectly(otherthanK2toK65,536).Setwhenthepresetvalueiswrittenincorrectly.

WhenvalueringlengthinSetwhenthecomparevalueiswrittenincorrectly.

16-bitcountermode.

Setwhenthecurrentvalueiswrittenincorrectly.Setwhenthecounteroverflowstheupperlimit.Whentheupperorlowerlimitis

exceededona32-bitcounter.Setwhenthecounteroverflowsthelowerlimit.

SetwhentheFROM/TOcommandisusedincorrectly.Counterdatadoesn'tbeaccessby32bitSetwhenthecountermode(BFM#0)iswrittenincorrectly.WhenoutsideofK0toK11SetwhentheBFMnumberiswrittenincorrectly.WhenoutsideofK0toK31Undefined

Note:b9willalsobesetwhenaccesstoreservedareaorReadfromWriteonlyorwritetoreadonlyareas.

Thereerrorflagscanberesetbyb8ofBFM#4.

11)ModelidentificationcodenumberBFM#30

TheidentificationnumberforaSpecialFunctionBlockisreadbyusingtheFROMcommand.TheidentificationnumberfortheVB-1HCunitisK4010.

Byreadingthisidentificationnumber,theusermaycreatebuilt-incheckingroutinestocheckwhetherthephysicalpositionoftheVB-1HCmatchestothatofthesoftware.

PleaseusethefollowingprogramasaguidewheneveryouusetheVB-1HCunit.Otherinstructionstoreadthecurrentvalueofthecounter,statusetc.canbeaddedasrequired.

K0:BFM#0(CounterMode)K10:PRESETValue:16K12:YH1MatchValue:500K14:YH2MatchValue:1000X0:CountpermitX1:YH1outputpermitX2:YH2outputpermitX3:MutualResetX4:PRESETpermitX10:ClearERRORX11:YH1RESETX12:YH2RESETX13:YH1SETX14:YH2SETSendCommandK20:CURRENTValueK26:CompareresultsK27:TerminalstatusK29:ERRORstatus

K4:Mode4-->ABx4

5.1Preliminarychecks

1)CheckthattheI/OwiringandextensioncableoftheVB-1HCareproperlyconnected.

2)5V85mApowerissuppliedfromthemainorextensionunitsfortheVB-1HC.Checkthatthereisnopoweroverloadfromthisandotherextensionblocks.

3)Thecounterworkscorrectlyonlywhendatasuchasthecountermode(setwithapulsecommand),theTOcommand,thecomparevalue,etc.areappropriatelyspecified.Remembertoinitializethecount(BFM#4b0),preset(BFM#4b4),andoutput(BFM#4b2,b1)prohibits.ResettheYH1/YH2outputsbeforeyoustart.

5.2Errorchecking

ThefollowingLEDsonthemainpaneloftheVB-1HCmay

helpyoutotroubleshoottheunit.

UP,DN:Lightsuptoindicatewhetherthecounterisgoingup(UP)ordown(DN).

PRESETandDIS:TheappropriateLEDlightsupwhenthePRESETterminalortheDISABLEterminalisON.YH1,YH2:TheappropriateLEDlightsupwhenYH1/YH2outputisturnedon.Youcanchecktheerrorstatusbyreadingthecontent

ofBFM#29tothePLC.Errorcontentsareshowninsection3.3(10).

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