User's Manual

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WirelessHandheldGunTypeScanner
14
USER’SMANUAL
ScannertoRemoteApplication
DataFormatofPacket
Tosendadata(barcode)totheremoteapplication,theBTscannerhastoencapsulateit:
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EAH
(Header)
Sizeof
payload
FEH
(Format
Byte)
Data
ID
Data
Barcode
Type
AEH
(Endof
Byte)
Reserved
Byte
1byte 1byte 1byte 1byte Varies 1byte 1byte 1byte
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Title Definition
HeaderCharacter(EAH) ThecharacterIDattheheadofeverydata.Ithasto
startwithEAH.
SizeofPayload Theencapsulateddatalengthexcludingheader
character.
FormatByte(FEH) Differentiatedataformat;barcodedataisalwaysFEH.
DataID Thenumberofeachdata.IfreceivethesameIDmore
thanonce,onlythefirstoneisvalid,deletetherest.
BarcodeType(1byte) PleaserefertotheBarcodeTypeTable.
Data Decodedbarcodedata.
EndofByte(AEH) Recorddataends.
ReservedByte Reservedforfutureuse.
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Example:
IfCode39barcodedatais"ABCD",thansendersendsout:
EAH+0AH+FEH+ID+"ABCD"+11H+AEH+ReservedByte
0AH=1+1+1+4+1+1+1
Acknowledgepacket
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55H(Header) DataID 55H(endofbyte)
1byte 1byte 1byte
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Example:
Ifscannersendsout:
EAH,0AH,FEH,01H,"ABCD",011H,AEH,EEH
Remoteacknowledges:55H+01H+55H