Chapter 5. Defining Field Options

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."

Sum of Products Calculation

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 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

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

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

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Paxar TCMPCL2PR manual Sum of Products Calculation, Field Weight string Products
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