User`s manual

A–9Bar Codes
Checksums
Checksums can be included within the bar code symbol. If a checksum digit
is required for a particular style, it is computed by the user and sent along
with the rest of the characters that make up the bar code symbol. The printer
automatically computes the check digit and embeds it at the end of the bar
code for the UPC, EAN, Code 11, Code 128, and Postnet bar codes.
Parity
You can use odd or even parity to send an individual character in styles
EAN–8, EAN–13, UPC–A, and UPC–E. The individual digits (0 through 9,
since these are the only allowable characters in these styles) might have
different bar patterns, depending on whether the character is coded in odd or
even parity.
Multiple Bar Codes
The printer can make multiple bar codes on the same line. To do this, use the
following sequence:
POSITION START Print Stop POSITION Start next Print Stop
(VPA) bar code bar code bar code (VPA) bar code bar code bar code
The above method prints multiple bar codes on one line by means of multiple
passes. For example, the printer will print the first bar code, reverse the
paper, then print the next bar code on the same line.
The sequence for printing multiple barcodes is shown below, implemented
via control codes described on the indicated pages:
<esc>[3d<esc>%0data<esc>%@<esc>[3d<esc>%0data<esc>%@
|________ __| |______| |________| |__________| |_______| |________|
↑ ↑ ↑ ↑ ↑ ↑
VPA DECBARC ROCS VPA DECBARC ROCS
7–75 A–6 A–6 7–75 A–6 A–6