Appendix G – Bar Code Details
Class Series 2 Programmer’s Manual 217
Z: PDF-417 with Byte Count Specifier
Specified Length – The upper case Z identifies a PDF-417 bar code with a string 4-digit
length specifier. This allows values 0x00 through 0xFF to be used within the data strings
without conflicting with the DPL format record terminators. The four-digit decimal data
byte count immediately follows the 4-digit column position field. This value includes all
of the data following the byte count field, but does not include itself.
<STX>L
D11<CR>
1Z00000001501000015F1000000pdf<0x0D>417<CR>
121100000000100Barcode Z<CR>
E
Barcode Z
From the example above, the bar code’s data stream,
1Z00000001501000015F1000000pdf<CR>417
includes a Byte Count Specifier (the portion in bold), where 0015 equals the four-digit
decimal data byte count and includes all bytes that follow until the end of the bar code
data. Field termination is set by the byte count. <STX>, <CR>, and <0x0D> all represent
single byte values of hexadecimal 02, 0D, and 0D, respectively. The PDF-417 bar code
produced encodes “pdf<CR>417”, and prints a line of text: Barcode Z.
W1c: DataMatrix
Valid Characters: Any 8-bit byte data
Variable Length
DataMatrix is a two-dimensional matrix symbology, which is comprised of square
modules arranged within a perimeter finder pattern. There are two basic types: ECC
000-140 and ECC 200.
ECC 000 - 140 symbols:
These square symbols can be any odd size from 9x9 to 49x49, which may be specified in
fields jjj and kkk. If an ECC 000-140 symbol is specified with even numbers of rows or
columns, the next largest odd value will be used. Input values greater than 49 or less
than 9 will cause the symbol to be automatically sized for the input character stream.
The record format is shown here, expanded with spaces.
a W b[b] c d eee ffff gggg hhh i jjj kkk ll…l
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