Worth Data 5000 - Manual (Page 119)

118
UPC-E Checksum Calculation
Use the sample data of 123456 to demonstrate the UPC-E checksum calculation:
The 6 digit UPC-E code is converted to a 10-digit code, using an expansion scheme based on the sixth digit:
Because the sample UPC-E code ends in a 6, the insertion digits 0000 are inserted at the sixth digit (insertion position 6):
1234500006
Add the Number System Character of 0 to the sample data:
01234500006
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
The complete 8 digit code consists of the Number System Character, the original 6 digit code and the check digit:
01234565
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