Specifications

Code 128 - subset B is programmed directly as ASCII text, except for

values greater than 94 decimal and a few special characters:

^>~

These characters must be programmed by using the invocation codes

shown in the table on page 131.

Example of Code 128 - Subsets A and C

Code 128 subsets A and C are programmed as pairs of digits, 00-99,

in the field data string. (Refer to the Code 128 characters chart on

page .130)

In subset A, each pair of digits results in a single character being

encoded in the barcode; in subset C, they are printed as entered. Fig E

below is an example of Subset A. (The “>9" is the Start Code for Sub-

set A.)

NOTE: Non-integers programmed as the first character of a digit

pair (D2) are ignored. However, non-integers programmed as the

second character of a digit pair (2D) invalidate the entire digit pair,

and the pair is ignored. An extra, unpaired digit in the field data

string just before a code shift is also ignored.

Fig. C and Fig. D below are examples of subset C. Notice that the bar

codes in the figures are identical. In the program code for Fig. D, the

“D” is ignored and the 2 is paired with the 4.

ZPL II COMMAND REFERENCE 133

Fig. E: Subset A

Fig D: Subset C

Ignored Alpha

Character

Fig. C: Subset C

Normal Data