Code 93 Barcode Font User Manual

• Character Set
• ASCII Chart | Encoding Full ASCII
• Generation and Check Digit Calculations

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Code 93 Barcode Symbology Character Set

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.

Low-Resolution Printer Support

When using a printer with less than 600 DPI, such as a thermal printer, use the following point sizes to create accurate barcodes:

Generation  and Check Digit Calculations

To generate the Code 93 Barcode, the start and stop digits with 2 check characters must be included. IDAutomation provides font encoders to automatically format the start, stop and check characters to the barcode fonts. Thus, manual check digit calculations are not generally necessary. IDAutomation Code 93 font encoders include:

• User Encoders:
  • Crystal Reports Font Formulas
  • Excel, Access & Word VBA Macros & Functions
  • Online Font Encoder
    
  • OpenOffice VB Macros
• Developer Encoders: (included in Developer License and above)
  • .NET Assembly DLL
  • C++ Header File

Manual Check Digit Calculation

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 Character Set table above for the values 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.

Obtain Check Characters and Generate Barcode Encoding "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

Generating the Code 93 Barcode

To create the barcode containing the data "CODE 93" type or print the following with the Code 93 barcode font selected: (CODE=93E0)

Full Code 93 ASCII Character Set:

Related Products:

• Code 93 Fonts
• Code 93 Scanner
• Access Native Generator