Datamax Prodigy Plus Operator's Manual page 28

The example shown below prints out a Code 3 of 9 bar code with a
wide to narrow bar ratio of 3:1 and can be used to print any of the
bar codes shown in Appendix B by altering the example's fields.
Refer to Figures 2-2 and 2-3 for a brief explanation of the data fields
that appear in the barcode shown below.
<STX>L<CR>
D11<CR>
1A93040001501000123456789<CR>
121100000000100Barcode A<CR>
E
<STX>L <STX>L on line 1 is used to enter the label formatting
mode.
20
Printer Setup
Figure 2-2 Example line 3
Figure 2-3 Example line 4
Prodigy Plus