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A: Start bit
B: Data bit
C: Parity bit
D: Stop bit
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B B B B B B B B
13. RS-232C Serial Interface
13-1. Interface Specications
① Data transmission method: Asynchronous serial interface
② Baud rate: Selectable from 4800, 9600, 19200, 38400 bps
(Refer to “11. DIP Switch Setting”.)
③ Word length Start bit: 1 bit
Data bit: 7 or 8 bits (selectable.)
Parity bit: Odd, even or none (selectable.)
Stop bit: 1 bit length
④ Signal polarity RS-232C
MARK: Logic “1” (–3 V to –15 V)
SPACE: Logic “0” (+3 V to +15 V)
MARK “1”
SPACE “0”