APPENDIX: CODE 128 BAR CODE
Description of the CODE 128 Bar Code
In CODE 128 bar code system, it is possible to represent 128 ASCII
characters and 2-digit numerals using one bar code character that is defined
by combining one of the 103 bar code characters and 3 code sets. Each code
set is used for representing the following characters:
Code set A: ASCII character 00h to 5Fh
Code set B: ASCII characters 20h to 7Fh
Code set C: 2-digit numeral characters using one bar code character
(100 numerals from 00 to 99).
SHIFT characters
In code set A, the character just after SHIFT is processed as a
character for code set B. In code set B, the character just after SHIFT
is processed as the character for code set A. SHFIT characters cannot
be used in code set C.
Code set selection character (CODE A, CODE B, CODE C)
Each character switches code set selection to code set A, B, or C
accordingly.
Function character (FNC1, FNC2, FNC3, FNC4)
The usage of function characters depends on the application software.
In code set C, only FNC1 is available.
Command Manual - Page 68