Example of Code 128 - Subset B
Since Code 128 subset ‘B’ is the most commonly used subset, ZPL II
defaults to subset ‘B’ if no start character is specified in the data
string. This is demonstrated in following two samples.
The bar codes in the following two samples are identical.
The first two instructions (^XA^FO100,75) start the label format and
sets the field origin (from the upper-left corner) at which the bar code
field begins to 100 dots across the x axis and 75 dots down the y axis.
The third instruction (^BCN,100,Y,N,N) calls for a Code 128 style bar
code to be printed with no rotation and a height of 100 dots.
Instruction four (^FDCODE128 in Fig.A) and (^FD>:CODE128 in
Fig. B) specify the content of the bar code.
Instructions five (^XZ) indicates the end of the print field and the end
of the label format.
The interpretation line will print below the code with the UCC check
digit turned off.
NOTE: The ^FD instruction for Fig. A does not specify any subset
so the ‘B’ subset is used. In Fig. B , the ^FD instruction specifically
calls subset ‘B.’ Although ZPL II defaults to Code B, it is very good
practice to include the “invocation characters” in the instruction.
132 ZPL II COMMAND REFERENCE
Fig. B: Subset B - With Start
Character
Fig. A: SubsetB-NoStart
Character
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