IDAutomation Code 93 Barcode Font
Data Sheet and Check Character Calculation Example

To print the Code 93 Barcode Font, the start and stop digits and 2 check characters must be included. IDAutomation currently provides the Microsoft Office VBA (Visual Basic) Source Code for Excel and Access that is free to use with IDAutomation fonts. This VBA automatically formats the start, stop and check characters to the barcode fonts and it can be used as a guide for conversion to other languages. Therefore, manual check digit calculations are not generally necessary. IDAutomation also provides the functions for the Code 93 barcode in ActiveX DLL for Windows and in Crystal UFL for Crystal Reports.

Note: It is necessary to print the Code 93 space character from the "=" character instead of a space. The space character will produce a space and not a barcode. The space character can be printed before and after the barcode to ensure the proper quiet zone.

NOTE: IDAutomation currently provides the Microsoft Office VBA (Visual Basic) Source Code for Excel and Access that is free to use with IDAutomation fonts. This VBA automatically formats the start, stop and check characters to the barcode fonts and it can be used as a guide for conversion to other languages. Therefore, manual check digit calculations are not generally necessary. IDAutomation also provides functions for the Code 93 barcode in the ActiveX DLL for Windows and in the Crystal UFL for Crystal Reports.

The check character is positioned after the data characters and just before the stop character. To determine the value of the check character:

1. Reference the table above to obtain the value of all data characters.
2. Assign a weighting to each data character.
   • The first check character is referred to as "C" and is a modulo 47 sum of the data character values and weighting values. These increase from right to left, with the last data character first. The range for weighting "C" is from 1-20, therefore, after 20 this value is reset to 1.
   • The second check character is referred to as "K" and is also a modulo 47 sum of the data character values and weighting values. These also increase from right to left, with the "C" check character first. The range for weighting "K" is from 1-15, therefore, after 15 this value is reset to 1.
3. For check characters "C" and "K"; multiply the character values by their weights for the data characters.
4. Add these all together, divide by 47 and obtain the remainder.
5. Use the table above to locate the character that has the value of the remainder, use this as the check character.

The following is an example of how to obtain the check characters and print the barcode for the data "CODE 93"

 DATA = C O D E 9 3
Data Values = 12 24 13 14 38 9 3
C Weights = 7 6 5 4 3 2 1
K Weights = 8 7 6 5 4 3 2 1

To Calculate C:
(1*3)+(2*9)+(3*38)+(4*14)+(5*13)+(6*24)+(7*12)=484
484 / 47 = 10 remainder 14
C = E
To Calculate K:
(value of C = 14) + (2*3)+(3*9)+(4*38)+(5*14)+(6*13)+(7*24)+(8*12)=611
611 / 47 = 13 remainder 0
K = 0

CREATING THE CODE 93 BARCODE:
Therefore, to create the barcode containing the data "CODE 93" type or print the following with the Code 93 barcode font selected: (CODE=93E0)

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