F-1
Appendix F
Bar Code Quick Reference
1.
Introduction
The bar code print facility is available in all three emulations.
2.
Programming
There are three escape sequences to print bar codes
The first sequence is to define the Bar Code Header. The type of bar code as well as all
parameters are selected by a header. The header does not affect any parameters outside
the bar code application and remains valid until another header is transmitted or the
printer is turned off. This can be done at any time but before bar code printing.
The header has the following format:
ESC [ ; P
2
; P
3
; P
4
; P
5
; P
6
; P
7
8
z
Note:
8
= Space
In step two, the ESC-sequence "Set Mode Bar Code (SMBC)" starts the Bar Code printing.
ESC [ ? 0 h
Finally, the ESC-sequence "Reset Mode Bar Code (RMBC)" will stop printing.
ESC [ ? 0 l
Note:
Between SMBC and RMBC are only printable characters tolerated (no CR or LF).
Bar Code Header
Format
Function/Parameter
Hex Code
BH
Bar Code Header P
2
=
Bar Code type;
P
3
= Height of Bar Code;
P
4
= Width of thin bars;
P
5
= Width of thin gaps;
P
6
= Ratio width to height;
P
7
= Uni/Bidirectional printing
1B 5B 3B P
2
3B P
3
3B P
4
3B P
5
3B P
6
3B P
7
20 7A
SMBC
Start of Bar Code
1B 5B 3F 30 68
RMBC
Stop Bar Code
1B 5B 3F 30 6C
Содержание PP 404
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