Datamax E-Class Mark II Programmer's Manual page 232

W1C: DataMatrix with Byte Count Specifier
Specified Length – The upper case C identifies a DataMatrix bar code with a string 4-
digit length specifier. This allows values 0x00 through 0xFF to be included within the
data strings without conflicting with the DPL format record terminators. The four-digit
decimal data byte count immediately follows the four-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>
1W1C440000100010000292000000000Datamax<0x0D>prints best<CR>
121100000000100Barcode W1C<CR>
E
From the example above, the bar code's data stream,
1W1C440000100010000292000000000 Datamax<0x0D>prints best
includes a Byte Count Specifier (the portion in bold), where 0029
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 DataMatrix bar code produced encodes
"Datamax<CR>prints best," and prints a line of text: Barcode
W1C.
W1d / W1D: QR Code
Valid Characters: Numeric Data, Alphanumeric Data, 8-bit byte data, and Kanji
characters
Variable Length: The two-dimensional bar code (as documented in AIM, Version 7.0).
Syntax (spaces added for readability): a W1 b c d eee ffff gggg hh...h
Where:
220
Appendix G – Bar Code Details
Barcode W1C
Class Series 2 Programmer's Manual