Epson C82305 - Manual (Page 10)

DIP switch 2 (interface operations)
The table below contains information on switch
functions, and the factory setting of each.
Table 2.
Data word structure
The data word structure is also operator selectable
through DIP switch settings (See Table 1). The word
structure for serial data is:
1 start bit +7 or 8 data bits (selectable) + 1 parity
bit (selectable) +1 or more stop bits.