Epson ESC Manuale Utente Scaricare il pdf (Pagina 125)

B-18

Code 93

DC4 DC4 ESC ! n 15 p EM

CODE-93 bar code fields do not have a defined format length and contain

data belonging to the standard ASCII character set including control codes.

Since GS and EM control codes used within COMPUPRINT DC4 DC4 ESC

(... EM “Print bar-code” control sequence are part of the supported character

set, the host application must SET THE HIGHER-ORDER BIT of the above

control codes, to allow the printer distinguish between encodable data and

string terminators.

The complete ASCII standard character set is encoded by means of 47

combinations of 9 bar/space narrow elements arranged into 3 variable width

bars with their adjacent variable width spaces: each of the bars in the

supported combinations can be 1, 2 or 3 modules wide. The START/STOP

character has a 4-module wide bar. CODE-93 directly implements the basic

subset shown below:

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z-

.SPACES $ / + %

($) (%) (/) (+) (as special control characters)

# (as unique START/STOP character)

The other STANDARD-ASCII codes not presented above will be represented

by means of a combination of one control character in the above set followed

by a symbol in the alphabetical set. The HRC string is printed BELOW the

symbol when f field is set to 1, without check digits: ASCII non-printable

characters are represented in the “control code” format (e.g. CR is ^M, where

"control” is represented as DARK-SQUARE symbol).

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 287 288

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Epson ESC Manuale Utente Pagina 125