Example {A,1,A,R,10,5,P,"65432" p }
Adds check digit scheme number 1 to the printer’s memory. The modulus is 10, the maximum number of characters in the field is 5. The check digit is calculated by using the Sum of Products and the string of digits used in the calculation is "65432."
S u m o f P r o d u c t s C a l c u l a t i o n
This is an example of how the printer uses Sum of Products 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
field:5 2 3 2 4 5 2 1 9
weight string: 4 1 2 3 4 1 2 3 4
2.Each digit in the field is multiplied by the weight assigned to it:
field:5 2 3 2 4 5 2 1 9
weight string: 4 1 2 3 4 1 2 3 4
products: 20 2 6 6 16 5 4 3 36