Class Series 2 Programmer’s Manual 203
Appendix G
Bar Code Details
Unless otherwise noted all bar codes depicted in this section were produced using the
ratio/module values of 00 and height fields of 000 to cause the printer to produce symbols
using default bar widths and height fields. See Appendix F for the default values.
A: Code 3 of 9
Valid Characters: 0-9, A-Z, - . * $ / + % and the space character.
Variable Length.
Valid bar widths: The expected ratio of wide to narrow bars can range from 2:1 to 3:1.
The following example prints a 3 of 9 bar code with a wide to narrow bar ratio of 3:1:
<STX>L
D11<CR>
1A00000001501000123456789<CR>
121100000000100Barcode A<CR>
E
B: UPC-A
Valid Characters: 0-9
Length: 12 digits. If the user provides 11 digits, the printer will compute the checksum.
If the user provides the checksum, the printer will check that it matches the expected
checksum. If it does not match, the printer will print out all zeros and the expected
checksum. See Appendix O.
Valid bar widths: The fourth character of record is the width of the narrow bar in dots.
All other bars are a ratio of the narrow bar (2 times, 3 times, and 4 times the narrow
bar width).
The following example prints a UPC-A bar code:
<STX>L
D11<CR>
1B000000015010001234567890<CR>
121100000000100Barcode B<CR>
E
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