MS-804FZY and MS-904HS Integration Guide
MSI Plessey Check Digit Algorithm
Parameter # 33h
When the Two MSI Plessey check digits option is selected, an additional verification is
required to ensure integrity. Select one of the following algorithms.
7-80
*MOD 10/ MOD 11
(00h)
MOD 10/ MOD 10
(01h)