Check Digit Type

The check digit type specifies which algorithm BarTender uses to calculate the appended check digit for the symbol. Use the Check Digit Type option to select a check digit type from those supported by your symbol.

Code 39

You can set the check digit type for Code 39 - Full ASCII, Code 39 - Regular, and Circular Code 39 symbols. The following options are available:

MOD 43. This is the check digit type used most often when printing Code 39 barcodes. This is also the only setting that allows a check digit to be generated for Code 39 barcodes which contain non-numeric (alpha) characters in the data string. BarTender automatically ignores all alpha characters in your barcode data string when you select one of the other check digit types.
UCC MOD 10. This check digit is calculated using the same check digit formula used by the Interleaved 2-of-5, UPC, EAN, and GS1-128 (UCC/EAN-128) symbologies. Only choose this setting when the barcode data string contains numeric-only data.
MSI MOD 10. This check digit is calculated using the same check digit formula used by the MSI Plessey symbology. Only choose this setting when the barcode data string contains numeric-only data.
UNISON MOD 10. This check digit is calculated using a modified version of the MSI Plessey check digit formula. Only choose this setting when the barcode data string contains numeric-only data.

Code 11 (USD-8)

The following check digit type options are available for Code 11 (USD-8) symbols:

Auto. BarTender automatically chooses the most appropriate check digit type.
C. This check digit is the remainder of the result arrived at by adding the weighted value of each byte of data, and dividing by 11.
C+K. This check digit includes the "C" check digit listed above, as well as the "K" check digit. The "K" check digit is calculated in the same way as the "C" check digit, except that it includes the "C" check digit as the right-most character in the data source.

The Code 11 (USD-8) symbol specification recommends that if the length of the message to be encoded is less than 10 characters, C can be used. Alternatively, C+K is used if the message is 10 characters or longer.

Supported Symbologies

Circular Code 39
Code 11 (USD-8)
Code 39 - Full ASCII
Code 39 - Regular

Related Topics

Check Digits

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