Start And Stop Characters; Error Checking Characters; Unprinted Areas - HP PSI PP 4050 XP Benutzerhandbuch

Appendix A Programming Guide

$ Start and Stop characters

For bar code types EAN, UPC, Code 93, Code 128 and Postnet the printer
automatically adds start and stop characters.
For bar code type Code 39, 2 of 5 industrial and 2 of 5 interleaved the printer
adds start and stop characters only if they are not generated by the system.
For bar code type Codabar the application has to generate the start and stop
characters.
Following start and stop characters are accepted by the printer:
Bar code Type
Code 39
2 of 5 types
Codabar
Following combinations (start / stop) are specified for Codabar, but not
Note:
checked by the printer:
(a / t) (b / n)

$ Error checking characters

Error checking characters are added by the printer only for bar code types
Code 128, Code 93 and Postnet. For all other bar code types the application
has to generate error checking characters and transmit them to the printer.

$ Unprinted areas

To ensure proper readability of a bar code unprinted areas in front and
behind the bar code are required. The printer does not insert these areas
itself; the amount of space has to be calculated by the application.
A-34
Start Character
*
:
a, b, c, d, A, B, C, D
(c / *) (d / e) (A / A)
Stop Character
*
;
t, n, *, e, A, B, C, D
(B / B) (C / C) (D / D)