<CR> (ASCII 13),< LF> (ASCII 10), <FF> (ASCII 12), <Esc> (ASCII 27)
Any barcode which permits only numeric characters according to the standard is valid
as a numeric barcode. Barcodes which also permit alphanumeric characters must not
be closed with the space character (ASCII 32) as the stop character even if the base
data contains only numeric characters. Barcodes, which permit the space character
in the base data, are essentially considered to be alphanumeric in this sense.
Note
The stop character is interpreted. In other words: if you use <FF> as the stop
character, this is interpreted not only as a stop character, but also as a page
break. When, for example, the stop character <Esc> is used, this is
interpreted not only as a stop character, but also as the start of an escape
sequence.
The stop character informs PCL Barcode Flash that the base data collected since the
sequence <Esc>(s#T is to be printed as a barcode symbol.
Example:
<Esc>(s24670T12345<CR>
In this example, the number 24670 stands for Code 39. Here, <CR> (ASCII 13) is
used as the stop character. This sequence prints the character string “12345” as a
Code 39 symbol.
3.2.2 Stopping Barcode mode
To stop (deactivate) Barcode mode to enable you to print text again, change the font
again. Send once again a <Esc>(s#T sequence to the printer which includes the
number of the font that the printer is to use for further text from now on.
Some barcodes allow all 256 characters of the ASCII code, including the characters
that are valid as stop characters as described above. Because of this, the
appropriate characters cannot, of course, be used as stop characters as they may
appear in the middle of the base data, after all. For this reason, in addition to the
procedure described above, a second option – “Transparent mode” – is available to
you for isolating the base data. If you would like to create a barcode of this type and
use the stop characters as base data, add a second Escape sequence to the
barcode call sequence. This will indicate how many characters are to be assigned to
the barcode symbol.
Example:
<Esc>(s24820T12345<Esc>&p5X12345
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