Epson C82305 - Manual (Page 20)

SPECIFICATIONS
1. Synchronization: Asynchronous
2. Baud Rate: 75, 110, 134.5, 150, 200, 300, 600,
1,200, 1,800, 2,400, 4,800, 9,600, or
19,200 BPS (selectable)
3. Word length:
Start bit: 1 bit
Data bit: 7 or 8 bits (selectable)
Parity bit: Odd, even, none, or ignore (selectable)
Stop bit: 1 bit or more
4. Input signal polarity:
1) With RS-232D:
MARK = logic "1' ( - 3 to -25V)
SPACE = logic "0" ( +3 to +25V)
2) Current loop:
MARK = logic "1" (Current ON)
SPACE = logic "0" (Current OFF)
Note
The above voltage, between pin No. 17 and No. 24,
must not exceed 25V.
17