15 - 46 DS6878 Product Reference Guide
I 2 of 5 Check Digit Verification
Enable this feature to check the integrity of all I 2 of 5 symbols to verify the data complies with either the specified 
Uniform Symbology Specification (USS), or the Optical Product Code Council (OPCC) check digit algorithm.
Transmit I 2 of 5 Check Digit
Scan the appropriate bar code below to transmit I 2 of 5 data with or without the check digit. 
*Disable
(00h)
USS Check Digit 
(01h)
OPCC Check Digit 
(02h)
Transmit I 2 of 5 Check Digit (Enable)
(01h)
*Do Not Transmit I 2 of 5 Check Digit (Disable)
(00h)