15
6PC/DCSvalues
RS232/Ethernet connection • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C62
30325-EN-130701
6 PC/DCS values
6.1 General information
PC/DCSoutputsareusedasdigitaloutputsfortransmissionofmeas-
uredvalueinformation.Thedatacanbetransmittedtoasuperordi-
natePC,DCSorprocessingsystemviatheRS232/Ethernetinterface.
Thevaluescanbesente.g.ase-mailorreadoutviaModbusTCPin
caseofanexistingEthernetinterface.TheHTMLpagesofthesignal
conditioninginstrumentalsoshowthemeasuredvaluesofthePC/
DCSoutputs.Theadjustmentofthedataformatandthereference
valueiscarriedoutwithPACTwar eandthecorrespondingDTM.In
theparameteradjustmentpage"PC/DCS"thereferencevalueand
thedataformatareselected;inaddition,theoption"In case of error:
transmit error code instead of measured value"canbeactivated.
Withthereferencevalueyoudeterminewhichmeasuredvalueis
usedasinputsignalforthePC/DCSoutput.Thefollowingreference
valuesareavailabledependingontheinstrument:
•
Sensorvalue
•
Percent
•
Lin. percent
•
Scaled
•
Totalizer
With"Data format",theformatofthePC/DCSvalueisdetermined.
Hereyoudeterminehowmanydecimalpositionswillbetransmitted.
Thissettingisimportant,e.g.withModbus-TCP(lingofthemeas-
uredvalueas2Byteshort).ThePC/DCSvalueisthentransmittedin
theintegerformat,i.e.thevaluemustbewithintherangeof-32767
and+32767.
Example:Thesensorvalueofapressuretransmittershouldbe
transmittedasPC/DCSvalue.Themeauringrangeofthesensoris
between-0.5barand+0.5bar,thevalueshouldbetransmittedwith
twopositionsafterthedecimalpoint.Thefollowingsettingsmust
becarriedout:Thesensorvaluemustbeselectedas"Basic meas.
value"andtheselection#.##as"Data format".Withthesesettings,
thesensorvalue-0.5baristransmittedasPC/DCSvalue-0.5bar.
If" In case of error: send error code instead of measured value"isac-
tivated,thenumberoftheerrorcodeissentinsteadofthemeasured
value.Thesenumberscorrespondtothenumbersoftheinstrument
status.
Example:WitherrorE008,value8istransmittedinsteadofthemeas-
uredvalue.
Reference value
Data format
Fault