OCR Programming
269
OCR Check Digit Multiplier
Parameter # 700 (SSI # F1h BCh)
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. RS6000 OCR ships with the following
weight equivalents:
0 = 0 A = 10 K = 20 U = 30
1 = 1 B = 11 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 different from the default.
121212121212 (default)
123456789A (for ISBN, Product Add Right to Left. See OCR Check Digit Validation on page 270)
For example:
ISBN 0 2 0 1 1 8 3 9 9 4
Multiplier 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
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