Справочник Пользователя для Worth Data 802 RF
I-1
Appendix I
MSI/Plessey Specifications
Plessey is a variable length numeric only bar code. MSI Bar Code is a
variable length, numeric-only code with an automatically appended
Modulus 10 check digit. MSI is sometimes called Modified Plessey Code.
If the user specifies an additional check digit, the MSI code can be 14 digits
long, otherwise it has a maximum length of 13 characters. This is how the
MSI check digit(s) are calculated:
variable length, numeric-only code with an automatically appended
Modulus 10 check digit. MSI is sometimes called Modified Plessey Code.
If the user specifies an additional check digit, the MSI code can be 14 digits
long, otherwise it has a maximum length of 13 characters. This is how the
MSI check digit(s) are calculated:
The MSI
Mod 10 check digit is calculated as follows:
The example bar code data is:
82345
1. Form a number from the odd positions, starting in the units
position.
835
2. Multiply the new number by 2
(835) x 2 = 1670
3. Add the digits of product
1 + 6 + 7 + 0 = 14
4. Add the even digits of the original number to the result in 3
2 + 4 + 14 = 20
5. Subtract the result from the next highest multiple of 10
20 - 20 = 0
6. New
Check
Digit
0
7. Data with check digit is:
823450