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 that are 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 enables a check digit to be generated for Code 39 barcodes that 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 by using the same check digit formula that is used by the Interleaved 2 of 5, UPC, EAN, and GS1-128 (UCC/EAN-128) symbologies. Select this setting only when the barcode data string contains numeric-only data.
MSI MOD 10: This check digit is calculated by using the same check digit formula that is used by the MSI Plessey symbology. Select this setting only when the barcode data string contains numeric-only data.
UNISON MOD 10: This check digit is calculated by using a modified version of the MSI Plessey check digit formula. Select this setting only 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 that is arrived at by adding the weighted value of each byte of data and then dividing by 11.
C+K: This check digit includes the C check digit and 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 rightmost character in the data source.

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

Supported Symbologies

This option is available for the following symbologies:

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

Related Topics

Check Digit