Worth Data 7000 manual MSI/Plessey Specifications

sixth digit:

If the code	UPC-E Data	Insertion Digits	Insertion	10 digit code
ends in:	abcde0	00000	Position	ab00000cde
0			3
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

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

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:

The MSI Mod 10 check digit is calculated as follows:

The example bar code data is:

82345

•Form a number from the odd positions, starting in the units position.

835

•Multiply the new number by 2

(835) x 2 = 1670

•Add the digits of product

1 + 6 + 7 + 0 = 14

•Add the even digits of the original number to the result in 3

2 + 4 + 14 = 20

•Subtract the result from the next highest multiple of 10

20 - 20 = 0