Specifications

Mod 10 and Mod 43 Check Digits
Mod 10 Check Digit
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45541L-004 Rev. A ZPL II Programming Guide 9/15/06
Mod 10 Check Digit
The calculations for determining the Mod 10 Check Digit character are as follows:
1. Start at the first position and add the value of every other position together.
0 + 2 + 4 + 6 + 8 + 0 = 20
2. The result of Step 1 is multiplied by 3.
20 x 3 = 60
3. Start at the second position and add the value of every other position together.
1 + 3 + 5 + 7 + 9 = 25
4. The results of steps 1 and 3 are added together.
60 + 25 = 85
5. The check character (12th character) is the smallest number which, when added to the
result in step 4, produces a multiple of 10.
85 + X = 90 (next higher multiple of 10)
X = 5 Check Character
This bar code illustrates the above example. The digit on the right (5) is the check digit.