Datamax-O'Neil Class Series Programmer’s Manual - Manual (Page 209)

Appendix G – Barcode Details
Class Series Programmer’s Manual 195
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