Oki Pos 441 - Manual (Page 49)

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11. RS-232C Serial Interface
MARK “1”
A: Start bit
B: Data bit
C: Parity bit
D: Stop bit
11-1. Interface Specifications
1 Data transmission method: Asynchronous serial interface
2 Baud rate: Selectable from 400, 600, 00, 400 bps
(Refer to “0. DIP Switch Setting”.)
3 Word length Start bit:  bit
Data bit:  or  bits (selectable.)
Parity bit: Odd, even or none (selectable.)
Stop bit:  bit length
4 Signal polarity RS-
MARK: Logic “” (–V to –5V)
SPACE: Logic “0” (+V to +5V)
! " # $
B B B B B B B B
SPACE “0”