Intermec Trakker Antares 2460, Руководство пользователя

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C d 39
Configuration Command Reference
8-19
8
Code 39 full ASCII
Full ASCII uses a two-character encoding scheme to extend the
character set to 128 characters. You use the dollar sign ($), slash (/), percent (%), or
plus (+) followed by an uppercase letter to represent one of the characters in the
extended set. You must encode lowercase letters as a plus sign (+) followed by their
uppercase equivalents. For a list of ASCII characters and their Code 39 representations,
see the “Full ASCII Table” in Appendix B.
Use Code 39 full ASCII to enter ASCII control characters or lowercase characters as
data. You should also enable Code 39 full ASCII to use ASCII command characters.
For example, you encode the data “sample” in Code 39 full ASCII as follows:
*+S+A+M+P+L+E*
*+S+A+M+P+L+E*
In Code 39 non-full ASCII, this label decodes as +S+A+M+P+L+E. In Code 39 full
ASCII, this label decodes as sample.
Code 39 mixed-full ASCII
Use mixed-full ASCII when printers encode the same label
two different ways. For example, if you have a bar code with the data $%a, some
printers encode the data as follows:
*/D/E+A*
*/D/E+A*
In the Full ASCII Table in Appendix B, /D represents $ and /E represents %. If you
configure the terminal for Code 39 full ASCII, the terminal decodes the data as $%a
because there are three valid full ASCII character pairs to represent the data.
Other printers encode the data $%a as:
*$%+A*
*$%+A*
The $ and % are valid Code 39 characters in the non-full ASCII character set. However,
the terminal will not decode this label if it is configured for full ASCII, because the data
is not represented by valid full ASCII character pairs. To decode the label correctly,
you need to configure the terminal for mixed-full ASCII.
When you configure the terminal for Code 39 mixed-full ASCII, the terminal will
decode both of the labels above as $%a.
Mixed-full ASCII interprets any valid full ASCII character pairs that appear in the
label, but does not require that all data be encoded with a valid full ASCII character
pair. If you are uncertain how your labels are encoded, configure the terminal for
mixed-full ASCII, which decodes all valid Code 39 labels.
If you configure the terminal for Code 39 full ASCII, you should check for Code 39
mixed-full ASCII. Mixed-full ASCII does not apply when you configure the terminal
for non-full ASCII.