The Code 39 bar code shows the ZPL II script written like this:
^XA^FO100,75^BY3
^B3N,N,100,Y,N
^FD123ABC^XZ
Since it is only one field, however, the entire command can be written as a one line entry:
^XA^FO100,75^BY3^B3N,N,100,Y,N^FD123ABC^XZ
Finally, this script can be further simplified by writing it on one line, using the comma (,) delimiter to reduce the default parameters in the
^B3
command and eliminating the default parameters at the end of the
^B3
command:
^XA^FO100,75^BY3^B3,,100^FD123ABC^XZ
You might write your ZPL II scripts in any way that makes sense to you. Some programmers prefer to write out each format command and field on a line by line basis like this:
^XA
^PR2^FS
^LL935^FS
^LH30,30^FS
^FO20,10^AF^FDZEBRA^FS
^FO20,60^B3,,40^FDAA001^FS
^FO20,180^AF^SNSERIAL NUMBER 00000000111,1,Y^FS
^PQ10^FS
^XZ
Although this script will print with no problems, it contains unnecessary
^FS
(Field Separator) commands which have been placed after the format commands. Some programmers feel it is required to place a
^FS
command at the end of each line, but the
^FS
command is only needed to separate specific fields. Therefore, the script would transmit more quickly written like this:
^XA
^PR2
^LL935
^LH30,30
^FO20,10^AF^FDZEBRA^FS
^FO20,60^B3,,40^FDAA001^FS
^FO20,180^AF^SNSERIAL NUMBER 00000000111,1,Y^FS
^PQ10
^XZ
Other programmers prefer to keep the format commands on one line as an organizational preference, like this:
^XA^PR2^LL935^LH30,30
^FO20,10^AF^FDZEBRA^FS
^FO20,60^B3,,40^FDAA001^FS
^FO20,180^AF^SNSERIAL NUMBER 00000000111,1,Y^FS
^PQ10^XZ
The label will print out the same so you should develop a scripting pattern that suits your own organizational style but one which is efficient and is concerned with keeping transmission times to a minimum.
