Symbol DS7708 - OCR Check Digit Multiplier

OCR PROGRAMMING 13 - 39
OCR Check Digit Multiplier
SSI # F1h BCh
Parameter # 700
This option sets OCR check digit multipliers for the character positions. For check digit validation, each
character in scanned data has an equivalent weight used in the check digit calculation. PL3307 OCR ships
with the following weight equivalents:
0 = 0 A = 10 K = 20 U = 30
1 = 1 B = 1
1 L = 21 V = 31
2 = 2 C = 12 M = 22 W = 32
3 = 3 D = 13 N = 23 X = 33
4 = 4 E = 14 O = 24 Y = 34
5 = 5 F = 15 P = 25 Z = 35
6 = 6 G = 16 Q = 26 Space = 0
7 = 7 H = 17 R = 27
8 = 8 I = 18 S = 28
9 = 9 J = 19 T = 29
All other characters are equivalent to one (1).
You can define the multiplier string if
it is differ
ent from the default.
121212121212 (default)
123456789
A (for ISBN, Product Add Right to Left. See OCR Check Digit Validation on page 13-40)
For example:
ISBN 0 2 0 1 1 8 3 9 9 4
Mu
ltiplier 10
9 8 7 6 5 4 3 2 1
Product 0 18 0 7 6 40 12 27 18 4
Product add 0+ 18+ 0+ 7+ 6+ 40+ 12+ 27+ 18+ 4= 132
ISBN uses modulo 11 for its check digit. In this case, 132 is
divisible by 11
, so it passes the check digit.
To set the check digit multiplier, scan
the following bar code, then scan numbers and letters to form the
multiplier string from the alphanumeric keyboard in the Advanced Data Formatting Guide. Then scan
End of
Message
in the Advanced Data Formatting Guide.
OCR Check Digit Multiplier