CAS DH User manual

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CONTENTS
Technical Parameter............................................4
Installation and Connection.............................5
1. IndicatorDiagram...............................................5
2. Loadcell Connection...........................................6
3. SerialCommunicationinterfaceandScoreboard.... 7
Operation Instruction.........................................9
1. Serial communication .......................................9
2. Key Operation......................................................9
3. Weighing Operation............................................9
Calibration Description................................... 11
User Function Setting........................................14
ErrorIndication...................................................17
Maintenance and attention............................17
*Dearusers :
Pleaseread the manual carefully before using this indicator.

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Technical Parameter
1.Analog part
ClassofAccuracy
Class III, n=3000
Inputsignalrange
-19mV~19mV
Conversionspeed
10times/sec
Gaindrift
0.03%
Excitationvoltage
DC5V
Loadcell connection
Max. 4ea 350ΩLoadcell
2. Display part
Display range
-99999~999999
(decimal point is not considered)
Scaledivision
1/2/5/10/20/50optional
3. Serial communication interface
Signal
RS232signal
Transmissiondistance
<20m
4. Score board display interface
Adoptsserialoutputmethod,
currentloopsignal, transmissiondistance
≤1000 M
5. Operation environment
Powersupply
AC220V; 50, 60Hz (-2%~ +2%)
Batterylifetime
Approx. 30 hours
Batterychargingtime
Approx. 15 hours
Operatingtemperature
0℃~40℃
Storageandtransport temperature
-25 ℃~55℃
Relativehumidity
≤85%RH
Fuse
500mA
Weight
Approx. 2 kg

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Installation and Connection
1. Indicator Diagram
Frontcover
Backcover

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Dimensions
2. Load cell Connection
■The Load cell is connected through 9-pin plug socket (hole). Figure 2-3 shows the meaning
of each pin.
■ Please use 4-core shielded cable.
▲！TheconnectionsofLoadcellandindicatormustbereliable,andtheshieldedcableof
Loadcell must be reliably grounded. Connections wires shall not be plugged and pulled when the
indicatorisinaPower-upStateinordertopreventstaticelectricitydamagingtotheindicatoror
Loadcell.
▲！Since both Load cell and indicator are static-sensitive device, anti-static measures must be
practically taken intheuse, and welding or other strong-electric operations on weighing platform are
strictlyprohibited.Inthethunderstormseason,reliablelightningprotectionmeasuresmustbetakento
preventlightningdamagingthesenorandinstrumentandtoensuretheoperatorsafetyandthesafe
operationofweighingequipmentandrelatedequipment.

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3. Serial Communication interface and Scoreboard
(Note : thisfunction is optional)
Serial communicationinterface
Communication interfaceuses5-pinsocket(pin)andallthedataisASCIIcode,andthereare10bits
ineverydatagroup,andthe1stbitisstartbitandthe10thbitisstopbit,andthereare8bitsinthe
middleandthereisnoparitybit.
1.Connectionmode
CASDHcommunication interface uses9-pinsocket(pin).Leadpin isdefinedasfollows:pin2 isfor
TXD(serialcommunicationdataline)andpin5isforgroundwire;shieldedcableisrecommendedto
beusedasconnectionline.See belowFiguredetails.
Communication for scoreboard and RS232
2. Interface parameter
①Signal: RS232C
②Baudrate:1200/2400/4800/9600
3. Communication method
Method1P5=2 continuous transmission
Transmitted data is weight. (gross weight, net weight or tare weight,decided by parameter P4).
Gross weight format is : ww000.000kg or ww000.000lb
Net weight format is : wn000.000kg or wn000.000lb
Tareweight format is : wt000.000kg or wt000.000lb
Note :Above decimalpoint position isdetermined by decimal pointposition setting oftheindicator.

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Method2P5=3 continuous transmission afterstabilization.
Transmitted data is weight. (gross weight, net weight or tare weight,decided by parameter P4).
Gross weight format is : ww000.000kg or ww000.000lb
Net weight format is : wn000.000kg or wn000.000lb
Tareweight format is : wt000.000kg or wt000.000lb
Note :Above decimalpoint position isdetermined by decimal pointposition setting oftheindicator.
Method3P5=4
Command method(Commandcharacter is ASCIIcode):
Indicator willdothe relevant operation as thecommand sent bycomputer
Command R Indicator receives thecommand and sends the weighing data on time.(format is as same
ascontinuousmethod1)
Command T Indicator receives the command and tare(assame as Tarebutton), indicatorreturn to
CR LF
Command IndicatorreceivesthecommandandZero(as sameasZerobutton),indicatorreturnto
CR LF
Method4P5=5 : continuous transmission
Data format := <Weightdata(including decimal point)>, all data arein ASCII code.
Note: =data format, ASCIIcode.
<Weight data (including decimal point)> : 6 digits(including decimal point) of weight data with symbol,
ASCIIcode.
Thelower digits arein front, and thehigherdigits and symboldigits arein the rear. Negativesymbolbit is
“-”,and positivesymbolis “0”
For example, if theweightshowing on the indicator is -500.00kg, theserial output data will be “=00.005-”
If the weight showing on the indicator is 500.00kg, the serial output data willbe“=00.005”.
Largescreen
Seescheme2-4 for wiring details. Scoreboardsignal is current loopsignal of 20mAconstant current andis
output in a serial way through binarycode, witha baud rate of600. Each framehas 11 databits, including
onestart bit(0), eightdata bits(LSBin front), one flag bit,and onestop bit(1).

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Operation Instruction
1. Serial communication
The indicator gets into self-check process after the power supply is connected. If the weight
on platform is withinthe startup zero setting range, it will enter automatic zero, and then the
weighing status. If the weight on platform exceeds thezero setting range, the indicator will
give tips and display weight.
2. key Operation
Inthecalibrationandparametersettingstatus,somekeyswillperformthefollowingfunctions:
1)[ZERO]keyperformsthe"plus1"function.Afterthe[ZERO]keyispressed,thenumberdisplayed
inthelastbitwillbe"plus1",automaticzerowillbemadeafteritisaddedto9.
2)[TARE]keyperformsthe"shift"function.AftertheTAREkeyispressed,thenumbershowninthe
lastbitwillmovetotherightforonebit,andwillmovetothehighestbitautomaticallyafterpresstare
keywhenitisinthelastbitattheright.
3)[HOLD]key performs“input” function, after the [HOLD]keyispressedthedatewillbeinputto
indicatorwhichwasset.
4)[CLEAR]keyperforms"exit"function,after[CLEAR]keyispressedtheindicatorwillexitthe
calibrationstateorsettingstate.
5)[ACCUM] keyperforms“switchingparameter"function,afterthe[ACCUM] keyispressedthe
indicatorwillcomeintothenextparametersettingstate.
3. Weighing Operation
1) ZERO :
Press [ZERO] key to enable the data within zero setting range of indicator to return to zero.
Zero setting can be performed only after the STABLE light is on.
2) TARE :
When thedisplayedweightinweighingstatusispositiveandtheSTABLElightison,pressthe
[TARE]keytodeducttheindicatedweightastareweight.Inthiscase,theindicatorwillshowanet
weightof"0"andtheNETWEIGHTlightison.Pressthe[TARE]keyagainwhengrossweightis0,
theindicatorwillclearthetareweightvalue.
Note: Tare is not workable when gross weight isnegative number.
①Inner code checking
Press [HOLD] and [ACCUM] key togetherin the normal weighing status, theindicator
willdisplaythe inner code.
②HOLD, average value :
You can choosethisfunctionbyfunctionsettingP2.Youcanstartorstopthisfunctionby[HOLD]
keyafteryourchoosethisfunction.
Choose2 for P2 parameter, press [HOLD]key, average valuelight is on, now the indicator
can estimateautomatically, and after stabilization theindicator will calculate and display
average value, and will display the average value after lighting, and also will cancel
displayaveragevalueaftercurrentvaluebacktozero,nowcanweighthenextaveragevalue;
Choose3forP2parameter,press[HOLD]keyinnormalweighingstatusandpeakvaluelightison,
andindicatornowintheautopeakvalueworkingstatus,anditcankeepthemaximumweighing
data,andwillcancelthedataholdaftertheweightbacktozero.
Inaboveoperationsteps,wecancanceltheaverageorholdfunctionbypress[HOLD]keyanytime;
andwillstartthisfunctionafterpress[HOLD]keyeverytimewhenstartup.

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③Manualaccumulationofmeasuredvalue:
Pressthe[ACCUM]keywhenthemeasuredvalueislargerorequalto20divisionsandthedatais
stableinthenormalweighingstate,theindicatorwillperform"manualaccumulation"function.In
thiscase,theindicatorwilldisplaythetotalaccumulationdata(intwosteps):[total=](indicating
thatthecontentshownbelowistheamountofaccumulationdata)willshowtheaccumulation
data[******]inabout1second.Thetimesofaccumulationwillbethenindicated(intwosteps):
[n=](indicatingthatthetimesisshownbelow)willshowthetimesofaccumulation[ ***]in
about1second.TheACCUMULATIONindicatinglightisthenon.
Note: themaximumtimesofaccumulationis9999(whenaccumulationresultisensuredtobe
≤999999); The accumulation resultswillbeheldbeforetheyareclearedandthedatawillnotbelost
afterpower-off.Whenthe[ACCUM]keyispressed,ifthenetweightislessthan20divisions,onlythe
accumulationvaluewillbedisplayed,andtheaccumulationofweightandtimeswillnotbemade.
④Automaticaccumulationofmeasuredvalue:
Pressthe[FUNC]and[ACCUM]keyatthesametimeinnormalweighingstateandnotthepeak
valueholdingandaveragevaluestate,theindicatorwillentertheautomaticaccumulationstate.In
thiscase,theACCUMULATIONlightison.Intheautomaticaccumulationstate,theindicatorwill
performanautomaticaccumulationanddisplaythetimesofaccumulationandtheresults
wheneverthemeasureddataislargerthanorequalto20divisionsandafterabout1-2secondsafter
thedataisstable.Re-pressthe[FUNC]and[ACCUM]keysatthesametimeorpress[HOLD]key
toexittheautomaticaccumulation.
Note:automaticaccumulationstatewillnotbesavedwhenthepowerisoff;however,the
accumulationdatawillbesaved.
⑤Clear the accumulation result :
PresstheCLEARkeyinweighingstate,theindicatorwillclearthetimesofaccumulationandthe
overallaccumulationdata.TheusershouldClearfirstandthendotheoperationinfirsttime
accumulation.
⑥Switchingbetweenkgandlb:
Pressthe[FUNC]and[HOLD]keysatthesametimeinnormalweighingstate,theindicatorwill
performswitchingbetweenunits;whenthemeasurementunitislb,thelastdigitbehinddecimal
pointoftheshowndataison.TheuserscanalsoswitchingunitbyadjusttheparameterofP1.
⑦Presettareandupper&lowerlimitsalarm:
Pressthe[HOLD]keysforlonginnormalweighingstatusinthefollowingsteps:
Step
Operation
Display
Description
1
[******]
Weighingindicationstatus
2
Press[FUNC]
Forlongtime
[P00000]
Guidetheusertoenterpresettarevalue.Presettarevaluecan
besetwithin5numbersvalue.
3
Inputthepresettare
value,e.g.“6000”
[ 6000]
Pressthe[HOLD]keytomakeconfirmationandmovetostep4.
4
Upperlimitalarm
value,e.g.“3000”
[H 00000]
Pressthe[HOLD]keytomakeconfirmationandmovetostep5.
5
Lower limitalarm
value,e.g.“0”
[L 00000]
Pressthe[HOLD]keytomakeconfirmationandmovetostep6.
6
[******]
Gobacktoweighingmode.Displayingnetweightaftertare.
Note : Cancel theupper and lower limit alarm is not workable whenboth the upper and the
lower limit is 0;

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Calibration Description
Properly connect the signal source and power supply topreheat the indicator for 15-30
minutes when there is no load on weighing platform.
After lead sealing is broken, please insert short connecting ring to connectpin J7 on the indicator
mainboard,andallowstheindicatortobecalibrated.
circuitboardissettingasdefaultthatallowscalibration,newindicatorcanomitthisstep），then
operateasfollowingsteps（aftercalibration,leadsealingagain）：
(1)Press[HOLD] keyduringstartupinitialization,theindicatorwillcomeintocalibrationstate.
①Divisionsetting：
Display 【d X 】press[TARE]keytochoose1,2,5,10,20,50，press[HOLD]keyfor
confirmation,andwillenterintonextparametersetting,
press[TARE]keyforautomaticstep-by-stepcycledisplay.
Display 【d X 】
Display 【d 1 】
Display 【d 2 】
Display 【d 5 】
Display 【d 10 】
Display 【d 20 】
Display 【d 50 】
Display 【d 1 】
Forexample,press[HOLD]keywhenitshows【d 5】,nowthedivisionissettingto5,and
willcomeintodecimalpointsettingstateautomatically.
②decimalpointsetting ：
Display 【P X】press[TARE]keytochoose0、1、2、3，press[HOLD] for
confirmation,andwillcomeintonextparametersettingautomatically. Press[TARE]keyfor
automaticstep-by-stepcycledisplay.
Display 【P 0】
Display 【P 0.0】
Display 【P 0.00】
Display 【P 0.000】
Display 【P 0】
Forexample,press[HOLD] keywhenitshows【P 0.000】,nowthedecimalpointsettingis
0.000，andwillcomeintofullcapacitysettingstateautomatically.

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③Fullcapacitysetting：
Display 【FULL 】press[TARE]keytocomeintothenumberinputstate.
Display 【000000】press [TARE] key，indicate symbol▼will move to right one step
bystepto which inputposition you want,and press [ZERO]to add
value to adjust thenumber you need, press [TARE] to adjust all the
numbers you need until input the full capacity you need, and press
[HOLD] orconfirmationandindicatorwillcomeintonext
parametersetting.
Forexample,whenitdisplays 【025000】press[HOLD] keyforconfirmationandwill
comeintozeropointsettingcalibrationstate.
④Zerocalibration：
Display 【nOLOAD】Insure there’s no loads on the platform and wait until the stable
indicate symbol▼display,then press [HOLD] key ，zero
calibration finished, and indicator come into full capacity calibration
state.
⑤Fullcapacitycalibration：
Display 【AdLOAD】Putweightsontheplatformandpress[TARE]keytocomeinto
inputstateafterstabilization.
Display 【000000 】Press[TARE]key，the indicate symbol▼move to right and to the
positionwhichcanselectnumberinput,press[ZERO]keytoadd
numberanduntilinputthenumberyouneedandthen
press[TARE]key , the indicate symbol▼move to right andtothe
positionwhichyoucanselectnumberinput,press[ZERO]keyto
addnumberuntilgetthenumberassameastheweightvalueofthe
weight.Press[HOLD] keyforconfirmationandfinishthefull
capacitycalibrationstate.
Display 【End】
⑥Press[CLEAR]keyandbacktoweighingstateandnewparameterstakeeffects.Atthistimeyou
canalsokeeppressing[HOLD] keytootherparameters.

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(2)Press[HOLD] keyduringstartupinitialization,theindicatorwillcomeintocalibration
state.
FastZerocalibration:
Press [FUNC] key in any time before display 【nOLOAD】,the indicator will save the
parameter of division, decimal point, full capacity，and come into the zero calibration state
directly. Press [ZERO] key when thestabilization symbol ▼ appear, it displays【End】，it
meansthat theindicatorsavethe fullcapacitycalibrationparameterbeforeand press [CLEAR]
key,theindicatorsavetheparametersandbacktoweighingstate.
Comeintofullcapacitycalibrationstatedirectly：
Press [ACCUM] key in any time before display 【AdLOAd】,the indicator will save the
parametersofdivision,decimalpoint,fullcapacity，andcome intothefullcapacitycalibration
statedirectly.
Note ：Pulloutshort-circuitringfromJP7afterthecalibration,andleadsealingagain.

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User’s function setting
Press[FUNC]keyover5secondsinweighingstate,theindicatorwillcomeintousersettingmode,
thereareP1~P14fourteenparametersettinginusersettingmode,press[TARE]keytoadjustthe
numberandpress[ACCUM] keytocomeintonextparameter.Theparametersdescriptions areas
follows:
1.P1 x kg Lbconversion
x=1: kgdisplay
x=2: Lbdisplay
2.P2 x functionchoose
x=1: nootherfunction
x=2: turnontheanimalfunction
x=3: turnontheholdfunction
3. P3 x Bateratesetting
x=1: 9600
x=2: 4800
x=3: 2400
x=4: 1200
4.P4 x RS232outputnetweight,grossweight,tareweightchoose
x=1: outputnetweight
x=2: outputgrossweight
x=3: outputtareweight
5.P5 x RS232outputmethodchoose
x=1: notransmission（RS232stop）
x=2: continuoustransmission
x=3: continuoustransmissionafterstabilization
x=4: commandmethod
（Z：zero，T：tare，R：sendweightdataonce）
x=5: 232largescreencommunicationformat
x=6: forextendfunctionuse
6.P6 x power-savingsetting
x=1: power-savingturnoff
x=2: power-savingmethod1,about30seconds
x=3: power-savingmethod2,about60seconds
x=4: power-savingmethod3,about30seconds,onlypresskeycan
exitthepower-savingstate
x=5: power-savingmethod4,about60seconds,onlypresskeycan
exitthepower-savingstate

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7.P7 x zerotrackingrange
x=1: 0.5e
x=2: 1.0e
x=3: 1.5e
x=4: 2.0e
x=5: 2.5e
x=6: 3.0e
x=7: 5.0e
x=8: trackingisforbidden
8.P8 x Zerorange
x=1: 2%FS
x=2: 4%FS
x=3: 10%FS
x=4: 20%FS
x=5: 100%FS
x=6: manualZeroisforbidden
9.P9 x startupzerorange
x=1: 2%FS
x=2: 4%FS
x=3: 10%FS
x=4: 20%FS
x=5: 100%FS
x=6: startupzeroisforbidden
10.P10 x digitalfiltertimeintensity
x=1: fast
x=2: middle
x=3: slow
11. P11 x stabletime
x=1: fast
x=2: middle
x=3 slow
12.P12 x stabilizationextent
x=1: low
x=2: middle
x=3 high
13.P13 x batteryindicationrefreshtime
x=1: slow
x=2: fast

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14.P14 x Displaysetting
x=1: brightness1
x=2: brightness2
x=3：brightness3
x=4：brightness4
x=5：brightness5

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Error Indication
[Err 1] Innercodeloadingistoosmallorthecapacityofloadcellistoolarge
[Err 2] Outofmanualzerosettingrange
[Err 3] Zeropositionistoohighorthereisheavygoodsonplatformwhenstartup.
[Err 7] Thecalibrationshort-circuitringdidnotconnected
[Err 8] Loadcellsignallineconnectinreverse,pleaseconnectLoadcelllineinrightway.
[------] Outofdisplayrange,displayvalueshouldbetween-99999～999999
[A oL] Outofthemaximumtimesofaccumulationorweighofaccumulation,
nowtheaccumulationisnotworkable,pleasedotheoperationafterclearance.
Maintenance and attention
1. Toguaranteeitsclarityandservicelife,theindicator shouldn’t be placed directly under sunshine and
shouldbesetintheplainspace.
2. Itisnotsuitabletoplacetheindicatorinthedustyandvibrationenvironmentandalsoavoidusingin
themoistenvironment.
3. Signalsourceandweighingindicatorshouldbereliablyconnected,andsystemshouldbewell
grounding.Itshouldbefarawaywithstrongelectricfield,strongmagneticfield.Loadcelland
indicatorshouldbefarawaywithstrongcorrosive,inflammable,explosiveobject.
▲Donotuseunderinflammablegasorinflammablesteam;donotuseunderpressure
containercanningsystem.
▲ Lightningfrequentareas,itmustbeinstalledreliablelightningarrester,toensure
operatorssafetyandpreventdamageofinstrumentsandrelevantequipmentdueto
lightning.
▲ Signalsourceandindicatorarestaticsensitiveequipments,whenusingmustearnestly
adoptanti-staticmeasure.Itisprohibitedinmeasuringdeviceforweldingoperationor
otherstrongelectricfieldoperation;inthunderstormsseason,wemustimplementthe
reliablelightning-protectionmeasurestopreventsignalsourceandtheindicatordamage
causedbylightningstrike,ensureoperatorssafetyofweighingequipmentandrelated
equipmentsafetyoperation.
4. Neverusestrongsolvents(e.g.,benzene,nitroclassoil)tocleanthehousing.
5. Liquidorelectricityconductingparticlesshouldnotbepouredintotheindicator,incasetheindicator
damageandelectricshock.
6. Youshouldcutoffpowersupplyofindicatorandrelevantdevicebeforeyoupull-inandoutthe
connectingcableofindicatorandexternaldevice.Youshouldcutoffpowersupplybeforepull-inand
outconnectingcableofsignalsource.

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7. Companyadviceforcustomers:starttouseourindicatoraftertest.Thecompanyisonlyresponsible
forthequalityofindicator,thebiggestcompensationisnotmorethantwiceofindicatorvalue,the
companyisnotresponsiblefailureofthewholesystem.
8. Outputinterfacesofindicatormustbestrictlyinaccordancetotheuser'smanual,youshouldnotalter
anyconnection.Ifthereisfailurewhenusingtheindicator,youshouldimmediatelyunplugit,andsend
tomanufacturersforrepair.Ordinarynon-professionalmanufacturersshouldnotrepairittoavoid
biggerdamage.
9. Sinceinvoicedate,theindicatorhasaone-yearfreerepairperiod.Ifanynon-artificiallyfailure
happensunderregularusingconditionswithinthisperiod,theusercansendtheindicatorwithits
guaranteecard(ofthecorrectnumber)backtoourservicestationorsupplierforrepair.Theindicator
shouldn’t be open without authorization, otherwise free guarantee will be cancelled
10.Battery
①ThebatterywillbechargedafterpowercordisconnectedtoAC220Vpowersupply.Soplease
removethebatteryifitisnotusedfrequently.
Inordertoavoidinternalover-heatandbatteryover-charging,thecurrentwillbelimited.Ifyoufeelthat
chargingistooslow,pleasebuyaspecialchargerforexternalcharging.Pleasenotethatthewireends
connectedtobatteryshallnotbeconnectedinversely(red+,black-),ortheindicatormayburnout.
Besuretofullychargethebatterybeforeusingthebuilt-inbatteryforthefirsttime!
②Whentheindicatorisbattery-powered,itwillautomaticallyswitchtoACsupplymodeoncethe
ACpowersupplyisconnected;inthiscase,theACindicatinglampwilllighton.Therearebattery
levelindicationsatthelowerleftcornerofindicatorscreen.Theindicatorwillautomaticallycutoffthe
DCpowersupplyafterthelastindicatinglampgoesout.Pleasechargethebatteryimmediatelyinthis
situation.Thecurrentbatteryvoltagecanbedisplayedwhentheindicatorisstarted.Pleasepayattention
tothisdatafromtimetotime.
③Pleasechargethebatteryforabout10-16hoursbeforeitsfirstusesoastoavoidatoolowvoltage
causedbyself-dischargingofbatterywhichmaybemistakenlytakenasfailure.
④Thebatteryshallbechargedforabout10-16hoursatatimeduringthenormaloperation.Ifthe
indicatorisnottobeusedforlong,thebatteryshallbechargedfor10-16hourseverytwo monthsin
ordertoextenditsservicelife.
⑤Fourgradebatteryvoltagedisplay,andbatteryvoltageare:6.19V、5.99V、5.77V、5.55V。The
indicatorwillturnoffwhenthelastlightisoff.
Thebuilt-inbatteryofindicatorisaconsumablepartthatisnotwithintherangeof"three
guarantees".
11.Powersupplyearthterminalshouldreliablecontactground

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MEMO

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