Lexmark FORMS 249X Technical Reference page 163

INTERLEAVED 2of5
Interleaved 2of5 is used to express all-numeric messages. Two bytes of data are
encoded to form one barcode character. If the check digit generation flag is on
(b0 = 1), the printer will add a '0' to the data string automatically.
k value:
m value:
s value:
minimum v1, v2 value:
c parameter:
n1 value (b0 = 0):
n1 value (b0 = 1):
n2 value:
182, xB6
0 to 4, x00 to x04
-3 to 3, xFD to x03
x0E, x01 (248x)
x20, x01 (249x)
available functions:
b0, check digit
b1, human readable
1 to 255, x01 to xFF
1 to 255, x01 to xFF
0, x00
Section 8: Barcodes
163