Lexmark FORMS 249X Technical Reference page 158

Since the b0 bit of the c parameter has a value of 01 (check digit by printer),
there must be 7 data characters (x07) specified in the Data Transfer Command.
Invalid EAN-8 command:
>x
1B5B66
0600
B3
00
00
4003
01
1B5B70
0700
>058C454 ...
The letter 'C' is not a valid data character for EAN-8; the numbers '0'-'9' are the
only valid characters.
158
Section 8: Barcodes
- barcode setup command prefix
- setup data length (low byte first) -
x0006, 6
- barcode type = EAN-8
- module width = default
- space width adjustment = default
- height (low byte first) - x0340 = 832 =
0.385 inches
- control byte: check digit from host, print
human readable character
- barcode data transfer command prefix
- data transfer length (low byte first) -
x0007, 7