Worth Data P11/12 user manual MSI Mod 11 check digit is calculated as follows

The MSI Mod 11 check digit is calculated as follows:

The example bar code data is:

943457842

1.Assign a checking factor to each number, starting with the units position of the number (in this example, the 2) up to the highest order position (the 9). Use checking factors of:

2,3,4,5,6,7,2,3,4,5,6,7...

2.Multiply the checking factor with its assigned number and add the products:

4 + 12 + 32 + 35 + 30 + 28 + 6 + 12 + 36 = 195

3.Divide the sum by 11

195/11 = 17 remainder 8

4. Subtract remainder from 11

11 - 8 = 3

5. New Check Digit

3

(If the remainder is 10, no check digit is added.)

6. Data with check digit is:

943457823

I-2