Preh MC12 User manual

Preh TechBytesNo.13
Update: 4/26/00
Product Family: MagneticStripeReader(MSR)inPrehTouchscreen
Subject: ProtocolfortheintegratedMSRinBaseofPrehTouchscreen
RS-232InterfaceONLY.
Overview
TheMSRcanbeconfiguredtoenableordisableTrack1,2and3output,andcanbeconfiguredto
disableautoinputandrequirearequesttoforcedataoutput.
OPOSdrivershavebeenwrittenfortheRS-232interfaceMSRinTouchscreenandareavailable
under:http://www.preh.com/
TheMSRelectronicsareNOTprogrammabletoincludeacustomerdefinableHeaderand
Terminatorstring,alsosentinelscannotbeprogrammedtobesentorturnedoff.
Initialization
RS232-Parameterfixed:9600Baud,8Databits,1Stopbit,evenParity.
Output-parameter:
IfAutoinputisonyouwillreceivedataofCarddirectlyafteracardswipe.IfAutoinputisoffyou
havetosendacommandRequest(02h)toreceivedata.
Setup
Ifyouchangeconfigurationofdeviceyouhavetosend3bytes.YouwillreceiveaNAK0x15(not
Acknowledge)orACK0x06(Acknowledge).Itispossibletochangeconfigurationatanytime.
ThedefaultsettingofSetupbyteis0x8F(afterPoweron).
Setupsequence:
Startbyte
01h=‘^A’ Setupbyte Endbyte 04h=‘^D’

Preh TechBytesNo.13
Setupbyte:
Bit0: MSRTrack1enable default:1
Bit1: MSRTrack2enable default:1
Bit2: MSRTrack3enable default:1
Bit3: Autoinput default:1
Bit4: RFU(=0)notused default:0
Bit5: RFU(=0)notused default:0
Bit6: M3,MSR3Trackfix default:0
Bit7: Format:
0:binaryoutputofdata;EDC==LRC)
1:ASCII-outputofdata;EDCaboveASCII-Data)
default:1
AcknowledgeHSMSR→ Host(Setupsequencei.O.):
Acknowledge
06h
NotAcknowledgeHSMSR→ Host(Setupsequencewasnotunderstood):
NotAcknowledge
15h
Request
IsBit3is settozero theAutoinputisoff andyouhavetosendarequesttoforcedata:
RequestHost→ HSMSR:
Request
02h
Dataoutput
Thedataoutputsequencestartswith0x02STX.followedbydataoftracks(withstart-and
endsentinel).
Theoutputstartswithtrack1,thentrack2andfinallytrack3.Ifonetrackisnotenabledyouwill
receivenodataforthistrack.TheTAGcontainsinformationaboutthedecodeddataformat.
ThenyouwillreceivethedataofthetrackinASCIIorbinaryformat.
AttheendofeachtrackthereisanErrorDetectionCode(EDC)abovetrackdata,equalLRCof
Card.TheEDCisXORabovealldataincludingstartandendsentinel(Exception: JISwithout
startsentinel).Theidentifierforendofsequenceis(F0h).
Data:

Preh TechBytesNo.13
Start
02h TAG1 Data1 EDC1 TAG2 Data2 EDC2 TAG3 Data3 EDC3 End F0h
TAG:
10T T 0 0 E E
T=Track: 00=JIS
01=ISO1(ISOTrack1)
10=ISO2(ISOTrack2)
11=ISO3(ISOTrack3)
E=Errorcode: 00=noerror
01= noStartsentineldetected
10=Parity-Error
11=ChecksumError
ExamplewithISO-Card:Track1=‘1’,Track2=‘2’Track3=‘3’:
1. Withoutinitialization
aftercardswipe
02h,90h,25h,31h,3Fh,2Bh,A0h,3Bh,32h,3Fh,36h,B0h,3Bh,33h,3Fh,37h;F0h
equal^BÉ%1?+á; 2?6B0h;3?7F0h
2. Initialization:01h03h04h Response:06h
aftercardswipeyouwillnotautomaticallyreceivedata.
AfteraRequest(02h)youwillreceivethedata
02h,90h,05h,11h,1Fh,0Bh,A0h,0Bh,02h,0Fh,06h,F0h
3. Initialization:01h89h04h Response:06h
afteracardswipewithchecksumerror:
02h,93h,F0h
Fortestingyoucanuseaterminalprogram.