Unitech MS920 Manual do Utilizador descarregar pdf (Página 23)

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A, B, C, D

Check digit

check digit verication

- AIM has a recommended check character for Codabar

- Each Codabar data character (including Start/Stop) has a value assigned to

it:

0 = 0 1 = 1 2 = 2 3 = 3 4 = 4 5 = 5 6 = 6 7 = 7 8 = 8 9

= 9 - = 10 $ = 11 : = 12 / = 13 , = 14 + = 15 A = 16 B = 17 C = 18

D = 19

- The values are added and the check is calculated:

check = [(next multiple of 16) - (sum of assigned AIM values)]

Example

data characters: A 0 1 2 3 4 B

AIM values = 16 + 0 + 1 + 2 + 3 + 4 + 17: 43

next multiple of 16: 48

check = 48 - 43: 5

nal message: A 0 1 2 3 4 5 B

Disable (*)

Enable

check digit transmissionr

- You can chose to transmit or not transmitted the check digit.

Disable (*)

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