Monarch 9403 M o f D i g i t s C a l c u l a t i o n, 20 + 2 + 6 + 6 + 16 + 5 + 4 + 3 + 36 =

3.Next, the product of each digit is added together. This is the sum of the products.

20 + 2 + 6 + 6 + 16 + 5 + 4 + 3 + 36 = 98

4.Divide the sum of the products by the modulus (10 in this case), only to the whole number. The balance is called the remainder.

9

1098

90

8

5.Subtract the remainder from the modulus.

The result becomes the check digit. In this case, the check digit is 2.

10 - 8 = 2

S u m o f D i g i t s C a l c u l a t i o n

This is an example of how the printer uses Sum of Digits to calculate a check digit for this data:

5 2 3 2 4 5 2 1 9

1.Weights are applied to each digit, starting with the last digit in the weight string. They are applied right to left, beginning at the right-most position of the field. Remember, a weight string must contain at least two different numbers. This example has a weight string

of 1,2,3,4.

field:5 2 3 2 4 5 2 1 9

weight string: 4 1 2 3 4 1 2 3 4

Defining Field Options 4-19