PT 200x User manual

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Reference Manual -SoftwareVersions3.xx
003X-606-111 Page 1
TableofContents
1. INTRODUCTION...................................................................................................................4
1.1. Overview....................................................................................................................4
1.2. Approvals(fortradeversionsonly)............................................................................5
1.3. TheManualsSet........................................................................................................5
1.4. Document Conventions..............................................................................................5
2. SPECIFICATIONS.................................................................................................................6
3. INSTALLATION.....................................................................................................................7
3.1. Introduction................................................................................................................7
3.2. GeneralWarnings......................................................................................................7
3.3. ElectricalSafety.........................................................................................................7
3.4. Cleaning.....................................................................................................................7
3.5. CableConnections.....................................................................................................8
3.6. DC Power(DC PWR +, DC PWR –).........................................................................8
3.7. LoadCellConnection.................................................................................................8
3.7.1. LoadCellSignalsandScaleBuild.............................................................8
3.7.2. 4-WireConnection.....................................................................................9
3.7.3. 6-WireConnection.....................................................................................9
3.8. AuxiliaryConnections..............................................................................................10
3.8.1. RS-232Serial...........................................................................................10
3.8.2. RemoteInput...........................................................................................11
3.8.3. Outputs....................................................................................................12
3.9. opto-LINK(Optional)................................................................................................13
3.10. ConnectingShields..................................................................................................15
3.10.1. CableShieldConnectionandEarthing....................................................15
3.11. RegulatorySealingRequirements...........................................................................15
4. DATAENTRY......................................................................................................................16
4.1. EditingAnnunciators................................................................................................16
4.2. NumericEntry..........................................................................................................17
4.3. SelectionsandOptions............................................................................................17
5. BASIC OPERATION...........................................................................................................18
5.1. DisplayandControls................................................................................................18
5.1.1. FrontPanel: VisualDisplay......................................................................18
5.2. OperationKeys........................................................................................................19
5.2.1. PrimaryFunction......................................................................................19
5.2.2. Editing Function.......................................................................................20
5.3. StabilityConsiderations...........................................................................................20
5.4. POWER Key............................................................................................................20
5.4.1. AutomaticOperation................................................................................20
5.5. ZEROKey................................................................................................................20
5.6. TAREKey................................................................................................................21
5.6.1. Preset Tare..............................................................................................21
5.7. GROSS/NETKey.....................................................................................................21
5.8. opto-LINKActivation................................................................................................22
5.9. PRINTKey...............................................................................................................22
5.10. FUNCTION Key.......................................................................................................22
6. CONFIGURATION...............................................................................................................23
6.1. GeneralSetup Information.......................................................................................23
6.2. BasicWeighingTerminology...................................................................................23
6.3. FilteringTechniques.................................................................................................24
6.4. Industrialvs NSC, OIMLandNTEP Modes..............................................................24
6.5. CalibrationCounter..................................................................................................25
6.6. Passcodes...............................................................................................................26
6.6.1. FullSetup Passcode................................................................................26
6.6.2. SafeSetupPasscode..............................................................................26
6.6.3. SetupLock-Out........................................................................................26

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7. ACCESSINGSETUP..........................................................................................................27
7.1. AccessingSetup......................................................................................................27
7.1.1. FullSetup.................................................................................................27
7.1.2. SafeSetup...............................................................................................27
7.1.3. SetupDisplayPrompts.............................................................................28
7.2. ExitingFullorSafeSetup........................................................................................28
8. SETUPMENUS...................................................................................................................29
8.1. GroupsandItems....................................................................................................29
8.1.1. GRP(Group)............................................................................................29
8.1.2. ITM(Item).................................................................................................29
8.2. SetupMenus............................................................................................................30
8.2.1. BUILD (ScaleBuild).................................................................................30
8.2.2. OPTION(ScaleOptions)..........................................................................31
8.2.3. CAL(ScaleCalibration)............................................................................32
8.2.4. SPEC(SpecialSettingsMenu)................................................................33
8.2.5. SERIAL(SerialCommunicationsOptions)...............................................35
8.2.6. CHECK.W(CheckWeighingSettings)....................................................36
8.2.7. CLOCK(ClockSettings)..........................................................................36
8.2.8. TEST(SpecialTest Functions)................................................................36
8.2.9. FACTRY(FactoryAdjustmentMenu).......................................................37
8.2.10. –End–(LeavingSetup)..........................................................................37
9. CALIBRATION....................................................................................................................38
9.1. PerformingaDigitalCalibrationwithTest Weights..................................................38
9.1.1. ZERO(ZeroCalibrationRoutine).............................................................39
9.1.2. SPAN(SpanCalibrationRoutine)............................................................39
9.2. PerformingaCalibration withDirect mV/VEntry......................................................39
9.2.1. DIR.ZER (Direct ZeroCalibrationEntry)...................................................39
9.2.2. DIR.SPN (Direct SpanCalibrationEntry).................................................40
9.3. UsingLinearisation..................................................................................................40
9.3.1. ED.LIN (EditLinearisationPoints)............................................................41
9.3.2. CLR.LIN(ClearLinearisation)..................................................................41
10. SERIALOUTPUTS.............................................................................................................42
10.1. NetworkCommunications........................................................................................42
10.2. AutomaticandSingleOutput...................................................................................42
MasterSerialOutput...........................................................................................................43
10.3. Printing.....................................................................................................................43
10.3.1. StandardPrinting.....................................................................................43
10.3.2. ProgrammablePrinting............................................................................44
11. CHECK WEIGHING.............................................................................................................46
11.1. Output Connection...................................................................................................46
11.2. Check WeighingOperation......................................................................................46
12. SPECIALFUNCTIONS........................................................................................................47
12.1. Introduction..............................................................................................................47
12.2. KeyFunctions..........................................................................................................47
12.2.1. NONE.......................................................................................................47
12.2.2. TEST........................................................................................................47
12.2.3. COUNT....................................................................................................47
12.2.4. UNITS......................................................................................................47
12.2.5. HOLDandPEAKHOLD...........................................................................48
12.2.6. LIVE.WT..................................................................................................48
12.2.7. SHOW.T..................................................................................................49
12.2.8. HI.RES.....................................................................................................49
12.2.9. A.TARE....................................................................................................49
12.2.10. CHECK.W................................................................................................50
13. APPENDIX..........................................................................................................................51
13.1. Dimensions..............................................................................................................51
13.2. SealingDetails.........................................................................................................52
13.3. SetupMenu Quick Reference..................................................................................53
13.4. ErrorMessages........................................................................................................55

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13.4.1. WeighingErrors.......................................................................................55
13.4.2. SetupandCalibrationErrors....................................................................56
13.5. DiagnosticErrors.....................................................................................................57
13.6. GlossaryTerms........................................................................................................58
13.7. List of Figures..........................................................................................................58
13.8. List of Tables...........................................................................................................58
14. INDEX.................................................................................................................................59

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1.Introduction
This instrumentisanIP69Krated precision digitalindicatorusingthelatestSigma-Delta
analoguetodigitalconversion technologytoensurefastandaccurateweight readings.
Figure1:WeightIndicator
Thesetupand calibration oftheinstrumentaredigital,withanon-volatilesecuritystore
forallsetupparameters.
Theinstrumentmaybeoperatedfrom9.6V,12Vor24VbatteriesoraDCpowersource
from12Vto24V.Thereisasoftpoweron/offfunctionthatretainsmemoryofthe
indicator’sstate.Onceaninstrumentis turned onitwill automatically startup againifthe
externalpoweris interrupted.
Theinstrumentisfittedwithopto-LINKcommunicationsasstandard.Thisallowsa
temporaryisolated communicationslinktobe established witha PCand enablessoftware
upgradesand theuseofcomputerisedsetupand calibrationviatheViewersoftware.
Refertoopto-LINK(Optional)page 13 formoreinformation.
1.1.Overview
Thisinstrument provides ZERO and TARE functionalityaswellasmoresetup
options(eg. serialandsetpoints)and printing functionality.
It alsosupportsspecialfunctions(eg.peak-hold,liveweight(livestock)averaging,
counting,etc.),viatheuserdefinable <FUNCTION> key.It is equippedwithan
NVRAMstoretoensureday-to-dayoperating settings(eg. ZERO, TARE,CLOCK,
etc.), areretained when powerisremoved.
Thisinstrumenthasthreeisolated transistoroutputswithstatusdisplayand LEDs
onthe frontpanelaswell astheRS-232communicationsportthatcanbeused for
printerdriving orconnectiontoaremotedisplayorPC.Thereis abuilt-inclockfor
date-stampingprintedoutputs.

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1.2.Approvals(fortradeversionsonly)
•C-tickapprovedandCEapproved.
1.3.TheManualsSet
Thismanualispartofasetofmanualscovering thesetup andoperationofthe
instrument. Theset includesthe following:
•Reference Manual -Containsdetailedinformation on calibrationandsetup.
Thismanualisintended forusebyScaleTechnicianswho areinstalling the
instrument.
•OperatorManual -Aimedatthe operation oftheinstrument,and coversthe
day-to-dayoperation of theinstrument.
•QuickStartManual -Intended forScaleTechnicianswhoarefamiliarwiththe
instrumentandsimplyneed aquickreferencetomenuoptionsandconnection
diagrams, etc.
•CommunicationsManual -Containsdetailsontheextended networking
capabilities(communicationsprotocol).
1.4.DocumentConventions
Thefollowingdocumentconventions(typographical)areusedthroughoutthis
ReferenceManual.
BoldText Boldtextdenoteswordsand phrasestonote.
<Key> <Key> denotesaKeypad key.
Note: Inthe Specificationssection the < symbolmeans less
than and the > symbolmeans greaterthan.
^ This symboldenotesonespace
⊗Itemsmarked with ⊗indicatethat thesettingis availableonlyin
Full Setupandis tradecritical.Whentradecriticalsettingsare
changedthecalibrationcounterwillbeincremented.

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2.Specifications
Performance
ResolutionUpto30,000divisions, minimumof 0.25µV/division, 20
updates/second(Trade4000 divisionsat0.8µV/division)
ZeroCancellation 2.0mV/V
SpanAdjustment 0.1mV/Vto3.0mV/Vfullscale
Stability/Drift Zero: <0.1µV/°C (+8ppmof deadloadmax)
Span<8ppm/°C, Linearity<20ppm,Noise<0.2µVp-p
Excitation 5 voltsforupto4x350 or8x700 ohmloadcells(4-wireor6-
wireplusshield)
Maximumtotalloadcell resistance: 1,000ohms
A/D Type 24bit SigmaDeltawith8,388,608internalcounts
A/D Conversion
Rate 20HzwithFIR filtering >80dB
Operating
Environment Temperature: –10to+50°C ambient
Humidity: 100%
Storage:–20to+50°C ambient
IP69K
CaseMaterials PC+Polyesteralloy,PBT, SiliconRubber,SS304Stand
Packing Weights BasicIndicator: 2.0kg
Digital
Display LED Backlit LCDwithsix20mmhighdigitswithunitsand
annunciators
Setupand
Calibration Fulldigitalwithvisualpromptinginplainmessages
DigitalFilter Slidingwindowaveragefrom0.1to4.0seconds
ZeroRange Adjustablefrom 2%to 20%of full capacity
PowerInput
StandardPower
Input 12to24VDC, 9.6,12and24Vbatteries(2.5VA max)– ON/OFF keywithmemoryfeature
Variants AC AC Powersupply: 110/240VAC 50/60Hzin12VDC1.2Aout
Battery 12Vbatterypack(rechargeableNiMH)
Features
opto-LINKData
Coupling Infra-red Connectorforoptionalopto-LINKPCcable(toUSB or RS-232PC port)
Correction Tenpoint linearitycorrection
Outputs RS-232automatic transmit, networkorprinteroutputs.
Transmissionrate: 2400,4800or9600baud
AssignableFunction
Key Unitswitching,counting, manualhold, peakhold, liveweight and totalising
DriveOutputs 3isolatedhigh sidedriveoutputs(400mAeachat12-24VDC)
BatteryBacked
ClockCalendar Batterylife10 yearsminimum

Reference Manual -SoftwareVersions3.xx
003X-606-111 Page 7
3.Installation
3.1.Introduction
Thefollowingstepsarerequiredtosetup the indicator.
•Inspect indicatortoensuregoodcondition.
•Useconnectiondiagramstowireupload cell,powerandauxiliarycablesas
required.
•Connect Powertoindicatorandpress <POWER> keytoturntheinstrument on.
•RefertotheAccessingSetupsectionpage27forinformationonconfiguring
andcalibrating theinstrument.
•Toturninstrumentoff pressandhold <POWER> keyforthree seconds(until
displayblanks).
3.2.General Warnings
•Indicatornottobesubjecttoshock,excessivevibration orextremesof
temperature(beforeorafterinstallation).
•Inputsareprotected againstelectricalinterference,butexcessivelevelsof
electro-magnetic radiationand RFImayaffect theaccuracyandstability.
•Theinstrument shouldbe installedawayfromanysourcesofexcessive
electricalnoise.
•Theloadcellcableisparticularlysensitivetoelectricalnoiseandshouldbe
located well awayfromanypowerorswitchingcircuits.
•ForfullEMCorforRFIimmunity,termination ofcableshieldsandcorrect
earthingoftheinstrument is essential.
•Indicatorand load cellcablearesensitivetoexcessiveelectricalnoise.Install
wellawayfromanypowerorswitchingcircuits.
3.3.Electrical Safety
•Foryourprotectionallmainselectricalhardwaremustberatedfor
environmentalconditionsof use.
•Pluggableequipmentmustbe installed nearaneasily accessiblepowersocket
outlet.
•Toavoidthe possibilityofelectricshockordamage tothe instrument, always
switch off orisolatetheinstrumentfromthepowersupplybeforemaintenanceis
carriedout.
3.4.Cleaning
•Theunithasbeendesigned forhigh-pressure,high temperature(80°C) wash-
downenvironments.Howeverlong periodsoffocusedpressureat acloserange
willdamagethecasing.Casing ischemicalresistant.

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3.5.CableConnections
All cableconnectionsaremade totherearoftheinstrumentusing pluggable screw
terminals.It is notnecessarytotintheendsofthewirewithsolderortoadd crimp
ferrulestothewires,however,thesetechniquesarealsocompatiblewiththe
terminals andmayultimately makeforaneaterjob.
Figure2:CableConnections
3.6.DC Power(DC PWR +, DC PWR –)
The DCsupply need notberegulated,providedthatitisfree ofexcessiveelectrical
noiseand sudden transients.Theinstrumentcan beoperatedfromahighquality
plug-packaslong asthereissufficientcapacitytodrivebothitandtheloadcells.
3.7.LoadCell Connection
3.7.1.LoadCell Signalsand ScaleBuild
Verylowoutputscalebasesmaybe used butmayinducesomeinstabilityinthe
weightreadingswhen usedwithhigherresolutions.Generallyspeaking,the higher
theloadcelloutput, orthelowerthenumberofdivisions,thegreaterthe display
stabilityandaccuracy.
The instrument candisplaythemilliVolt-per-Volt readingthat can beusedtocheck
scalebasesignaloutputlevels. Formoreinformation,refertoSCALE
(ScaleBaseTest Display)page36.
The instrument maybeconnectedforeither4-wireor6–wireoperation.To
correspondwiththe actualcablinginstallation theinstrumentmustbe configured in
setuptothe correctsetting.Formoreinformation,refertoCABLE(4-Wireor6-
Wire)⊗page30.

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3.7.2.4-WireConnection
Theminimumconnectivityrequirementsaretheconnectionoffourwires(ie.
Excitation+and–alongwithSignal+and–).Internallythe instrument hasa
precisionanalogueswitchthatcan beusedtoconnecttheSense+and –lines
directlytotheExcitation+and –lines.
Anyaddition to the loadcell manufacturer'scable lengthusing 4-wireconnection, is
onlyrecommended forshortcableruns.Wherelongadditionstocable lengthsare
needed, a6-wireextensionis requiredtomaintainaccuracy.
TheBUILD:CABLEoptionmustbe setto 4 toallowfor4-wireconnection.Referto
CABLE(4-Wireor6-Wire)⊗page30.
Figure3:4-WireConnections
3.7.3.6-WireConnection
Theexcitationandsignallinesareconnected thesameasfora4-wireinstallation.
Theextratwowires(Sense+and –)shouldbe connectedtotheExcitation+and –
linesascloseaspossibletotheloadcellitself.Typicallytheseconnectionsare
made inaloadcellterminationbox.
TheBUILD:CABLEoptionmustbesetto 6 (the default)toallowfor6-wire
connection.RefertoCABLE(4-Wireor6-Wire)⊗page 30.
Figure4:6-WireConnections

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3.8.AuxiliaryConnections
Thissectionprovidesdiagramstoillustratetheterminalconnections.
3.8.1.RS-232Serial
DirectPersonal ComputerLink(RXD, TXD,GND)
Figure5:RS-232 -Instrumentto PC usingCOMPort(DB9)
Figure6:RS-232 –Instrumentto PC usingCOMPort(DB25)

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PrinterConnections(RXD/TXD, GND andDTR)
Figure7:RS-232 –Instrumentto Printer(DB25)
RemoteDisplay (TXD, GND)
Theremotedisplaydocumentationshouldbe referred toforconnection details.
Connect TXD toRXD andGND toGNDon the remotedisplay.
3.8.2.RemoteInput
TheindicatorrequiresavoltagefreecontactbetweenTXDandRXDtoenable
theremoteinput(ie.SPEC:REM.FN).The SERIAL:FORMAToption mustbe
settoAUTO1,AUTO2,orMASTER. Note:The remoteinputwillnotfunction
wheninsetuporwhenusingtheopto-LINK.
WARNING
Theremoteinputisavoltagefreecontact
(eg. button, mechanical relay).
Connectionof anyactivecircuitrymay
damagetheinstrument.
Figure8:RemoteInput

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3.8.3.Outputs
Theoutputdriversforthe instrumentarehigh sidedriveand arecapableofdriving
upto400mAeach.Thisconfigurationallowsforthedirectconnectionofthe
instrument outputstomosttypesof PLC.
Thevoltageappliedtotheinstrument’spositivepowersupplyterminal(+)appears
ontheoutputlines(Over,PassandUnder) when the outputsareactive.The
outputscan thenbe connecteddirectlytoPLC inputs.
Todriveexternalloads(eg.relays),connectthe outputlinedirectlytothe positive
side ofthe relaycoil.Connectthenegativesideof the relaycoil toCOMMON. It is
recommendedthatfly-backdiodesortransientsuppressorsbefittedacross
inductiveloadssuchasrelaycoilstolimitswitching noise.
Figure9:Instrument Outputsto DriveRelay

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Figure10:InstrumentOutputsto DrivePLC
3.9.opto-LINK (Optional)
Atemporaryinfrared communicationslinkcan beestablishedbetween the
instrumentandaPCusinganoptionalopto-LINKcable.The optionalopto-LINK
cable canbe used to transfersetup and calibration informationfromaPC(eg.tobe
storedforlateruseand/ortransferredtootherinstruments).It canalsobeused to
downloadsoftwareupgradestotheinstrument fromaPC.
ThePCendoftheopto-LINKcableisastandardUSB orfemaleDB9connector.
Theinstrumentendofthecableconsistsofaninfrared transceiver,whichattaches
tothe left sideoftheinstrumentdisplay.Tofacilitateaquickand simple
connection,theinfraredtransceiverissecuredinplacebyapermanentmagnet
locatedwithintheheadoftheopto-LINK.
Refertoopto-LINKActivationpage 22formoreinformation.
WARNING
Theopto-LINK headcontainsastrongmagnetandcareshouldbetakenwith
it'sproximityto electronicmedia(eg. creditcards, floppydisks, etc.)and/or
otherelectronicinstrumentation.

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Figure11:opto-LINK Attachment

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3.10.ConnectingShields
ToobtainfullEMCorforRFIimmunity,cableshieldsMUSTbeconnectedtothe
earthlugontherearof the instrument.
3.10.1.CableShieldConnectionand Earthing
•Careshouldbe taken when connectingshieldstomaximiseEMCorRFI
immunityandminimiseearthloopsand cross-talk(interference)between
instruments.
•Forfull EMCorforRFIimmunity,terminationofthecableshieldsattheearth
lugisveryimportant.The earthlugoftheinstrumentmustbe separately
connectedtoground potentialviaareliablelink.
•Theinstrumentshouldonlybeconnectedtoearthviaasinglereliablelinkto
avoidearthloops.
•Whereeachinstrumentisseparately earthed,interconnectingcableshields
shouldbeconnectedat oneendonly.
•Caution: Someload cellsconnectthecableshielddirectly tothe load cell(and
thereforethescalebase).Connectionoftheloadcell cableshieldinthis
situationmaybesitespecific.
3.11.RegulatorySealingRequirements
Tocomply withregulatorysealingrequirementsforeachinstrument, (ie.toensure
instrumentsarenotaccidentallyordeliberately tamperedwith),itis importantthat
propersealingproceduresbe adheredto.RefertoSealing page 52 formore
information.

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4.DataEntry
Throughoutthesetup and normalweighingmode,differentdataentrymethodsareused.
Eachmethodis describedbelow.
When usingthekeypadfornormaloperation,pressthekeyonkeypadtoinitiatethe
feature.
4.1.EditingAnnunciators
WheninSetuptheinstrumentdisplayseditingannunciators.Figure12identifies
eachoftheeditingannunciators.When inSetup,pressthecorrespondingkeypad
keybelowthe annunciator.
Figure12:EditingAnnunciators
Editing
Annunciator Key Name Description
GRP ZEROStepsthroughthe list ofGroups.
ITM TARE Stepsthroughthe list ofItems.
Pressthiskeytoacceptchangesand returnto
themenus.
(Alsorefertothe OK descriptionbelow.)
SEL GROSS/NETMovesthe editingcursorinsomeediting modes.
EDT PRINTStepsthroughthe availableoptionswhenediting
aparticularitem.
OK OK
(FUNCTION) Pressthiskeytoacceptchangesand returnto themenus.
(Alsorefertothe ITM description above.)

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4.2.NumericEntry
Anumericentryboxallowstheinputofanumber.When enteringanumber,the
displaywill showdigitswiththecurrentlyselecteddigitflashing.The <SEL> keyis
pressed toselectadigittochange.Whenthedigitisselectedthe <EDT> keyis
pressed tochangethedigitfrom 0through 9.The left mostdigitcanalsobe
changed toadash(-) toenteranegativenumber.The <OK> keyispressedto
accept thenumberthat hasbeenenteredandreturntothemenu item.
Upperandlowerlimitsareplacedonsomeentriesand anentryoutside this range
willcausetheinstrument todisplaydashes(ie.------).
Example: WheninSetupfollowthestepsbelowtoset Build, MaxCapacity.
Press <GRP> repeatedly todisplaythe BUILD group.
Press <ITM> repeatedlytodisplaythe CAP item.
Press <SEL> toselect CAP and displaythecurrentsetting(eg. 0000.00kg).
Thecurrentlychosendigitwill beflashing. Press <SEL> toadvancetothe next
digit.
Whenthedigittoeditisflashing, press <EDT> repeatedly tocyclefrom 0through
9.
Whenthenewdigit tobeset is flashing eitherpress <SEL> tomovetothenext
digit toedit andrepeatthepreviousstep; orpress <OK> or <ITM> toaccept all
of thedisplayed digits(includingthe flashingdigit)andre-displaythemenu item
name.
4.3.SelectionsandOptions
Aselectionentryrequiresthechoiceofasingleoption fromalist. WhenaGroup
andItemhavebeen chosen,the <SEL> keyis usedtodisplaythe currentsetting
forthatitem.The <EDT> keycan beusedtocyclethrough theoptionsforthat
item.Whenthe desiredoption is displayed the <OK> keycanbepressedto
accept thedisplayed option and re-displaythe itemname.
Example: WheninSetupfollowthestepsbelowtoset Options, Filter.
Press <GRP> repeatedly todisplaythe OPTION group.
Press <ITM> repeatedlytodisplaythe FILTER item.
Press <SEL> toselect FILTER anddisplaythecurrentsetting.
Press <EDT> tocyclethroughtheoptionsforthat item.
Press <OK> or <ITM> toacceptthedisplayedoptionandre-displaythemenu item
name.

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5.BasicOperation
Inthemostbasic configuration,the instrument providesasimpleweight readout.
5.1.Display andControls
Figure13:Display andControlsIllustration
5.1.1.FrontPanel:Visual Display
Thefrontpanelhasasix-digitLCD display.Figure13 showsthemainelementsof
thefront panel.
Theinstrumenthasvariousmaindisplaysectionsforthevisualoutputofweight
information. Eachdisplaysectionis describedbelow.
WeightDisplay
TheWeightDisplayindicatesthe weightreadings,setup information,errors
and warnings.
UnitsDisplay
TheUnitsDisplayshowsthe unitsoftheweightreading aseithergrams(g),
kilograms(kg),pounds(lb),tonnes(t)ornone.If theinstrumentissetup for
countingtheunitsdisplaywillshowpieces(p).