Calculating the Checksum for Code 3 of 9
A 3 of 9 symbol is a
The check digit is the modulus 43 sum of all the character values in a given symbol.
1.Compute the check character for the character string:
12345ABCDE/
2.Sum the values of the characters based on their locations in the 3 of 9 character table:
1+ 2 + 3 + 4 + 5 + 10 + 11 + 12 + 13 + 14 + 40 = 115
3.Compute the modulus 43 of the sum:
115/43 = 2 Remainder 29
4.The check character is the character corresponding to location 29 in the 3 of 9 character table, which is T. Send to the printer:
12345ABCDE/T
Code 3 of 9 Character Table
0 | 0 |
| 12 | C |
| 24 | O |
| 36 | - (minus sign) |
1 | 1 |
| 13 | D |
| 25 | P |
| 37 | . (period) |
2 | 2 |
| 14 | E |
| 26 | Q |
| 38 | (space) |
3 | 3 |
| 15 | F |
| 27 | R |
| 39 | $ |
4 | 4 |
| 16 | G |
| 28 | S |
| 40 | / |
5 | 5 |
| 17 | H |
| 29 | T |
| 41 | + |
6 | 6 |
| 18 | I |
| 30 | U |
| 42 | % |
7 | 7 |
| 19 | J |
| 31 | V |
|
|
|
8 | 8 |
| 20 | K |
| 32 | W |
|
|
|
9 | 9 |
| 21 | L |
| 33 | X |
|
|
|
10 | A |
| 22 | M |
| 34 | Y |
|
|
|
11 | B |
| 23 | N |
| 35 | Z |
|
|
|
Calculating the Checksum for CODE 93
A Code 93 symbol consists of a start code, a variable number of data characters, two check digits (referred to as "C" and "K"), and a stop code.
The values used to compute the checksum for a Code 93 symbol are the locations of individual characters in the Code 93 character table. Check digit "C" is the modulo 47 sum of the character values and a weighting sequence, where the weights from right to left are in the sequence 1, 2, 3...19, 20, 1, 2, 3...19, 20....
Check digit "K" is the modulo 47 sum of the character values and a weighting sequence, where the weights from right to left, starting with the check character "C", are in the sequence
1, 2, 3...14, 15, 1, 2, 3...14,15....
7265 Programmer’s Manual | 58 |
Copyright © 2004 TallyGenicom | Chapter 3 ANSI Bar Codes |
