Black Box PC124C Installation Manual page 145

LASER CARDS FOR HP 4000 TWINAX AND COAX PRINTERS
Since Interleaved 2 of 5 symbols are created from data-character pairs,
the number to be encoded must have an even number of digits. If an
odd number of data characters (including the optional check digit) is
entered, the interface adds an "0" to the beginning of the bar code. If an
even number of data characters (including the optional check digit) is
entered, the interface prints the bar code exactly as it is input.
Code 128
Code 128 has three unique character subsets (code A, B, and C) shown in the
table on the following pages. When entering data representing Code 128 bar
code, follow these two steps:
1. Define which code set you want to use. For example, type "A" to represent
code A; type "B" to represent Code B; and type "C" to represent code C.
2. If you are using code set B, enter the data characters directly. The ~ character
and other special characters are represented by the Symbol Character Value
found in the left column of the table on the following pages.
If you are using code set A or C, enter the Symbol Character Value found in the
left column of the table. Each character is represented by two digits or a ~
followed by a digit. For example, to bar code the character "&" using Code Set A,
type 06.
Maximum number of data characters:
Valid characters:
Example: ¬B2,3,2,1,1,0,BABCDEFGHIJKLMNOPQRSTUVWXYZ¬B
144
0123456789
NOTE
30 (includes special characters)
Differs with selected code set; see table
on following pages