Worth Data 701 RF UPC-E Checksum Calculation

J-4
5. Subtract the result from the next higher multiple of 10.
Next higher multiple of 10 over 125 = 130
130 - 125 = 5
5 is the Modulo-10 check character. The data to be printed
becomes:
183145899385.
This same formula is used for EAN-13 (using the 1-12 digits) and
EAN-8 (using the 1-7 digits).
UPC-E Checksum Calculation
Use the sample data of 123456 to demonstrate the UPC-E checksum
calculation:
1. The 6 digit UPC-E code is converted to a 10-digit code,
using an expansion scheme based on the sixth digit:
If the code
ends in:
UPC-E Data Insertion Digits Insertion
Position
10 digit code
0 abcde0 00000 3 ab00000cde
1 abcde1 10000 3 ab10000cde
2 abcde2 20000 3 ab20000cde
3 abcde3 00000 4 abc00000de
4 abcde4 00000 5 abcd00000e
5 abcde5 0000 6 abcde00005
6 abcde6 0000 6 abcde00006
7 abcde7 0000 6 abcde00007
8 abcde8 0000 6 abcde00008
9 abcde9 0000 6 abcde00009
Because the sample UPC-E code ends in a 6, the insertion digits
0000 are inserted at the sixth digit (insertion position 6):
1234500006
2. Add the Number System Character of 0 to the sample data:
01234500006
3. Use the UPC-A check digit calculation described in the
previous section to produce a check digit as if it were a
UPC-A code. The check digit for the sample data is:
5
4. The complete 8 digit code consists of the Number System
Character, the original 6 digit code and the check digit:
01234565