Dascom 7010 Programmers Manual DMX - Manual (Page 106)

1-104
Bar code K: PLESSEY
This bar code consists of only numeric characters and number of
digits is variable in length. Checksum is added to the end of digit
through the modulus 10 calculation.
Bar code L: CASE CODE
This is a case code of the Interleaved 2 of 5 modulus 10 checksum
and is 14-digit fixed length. Valid ASCII code is 48-57. Standard ratio
is 5 : 2.
Bar code M: UPC 2DIG ADD
This is a supplementary code of 2 digits for UPC and consists of only
numeric characters and is 3-digit fixed length. The 2-digit numerics are
input from the computer or applications software and the 3rd digit is a
checksum automatically calculated by the printer. When the 3rd digit
numeric is sent from the computer, the printer compares the
characters with the calculated checksum. If they do not agree, the
printer prints all bar codes 0 (zero).