Cino M230B - Manual (Page 176)

167
Programming Reference
VERSAJET
For UPC-A (m = 0, 65) process
Modular check character is processed as follows:
Automatically added when processing data is 11 bytes.
The 12th byte data is processed as a modular check character when processing data
is 12 bytes. In this case, modular check character is not checked.
Left guard bar/center bar/right guard bar are added automatically.
For UPC-E (m = 1, 66) process
The first data (d1) is processed as number system character (NSC) so 0 must be
specified.
If n is out of the specified range or if n is an odd number when ITF bar code system (m =
70) is selected, this command is canceled and the following data is processed as normal
data.
Modular check character is processed as follows:
Automatically added when processing data is 11 bytes.
The 12th byte data is processed as a modular check character when processing data
is 12 bytes. In this case, modular check character is not checked.
Modular check characters are data to decide bar code pattern, they are not included
printing data.