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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 4800, 9600, 19200, 38400 bps
(Refer to “10. 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-232
MARK: Logic “1” (–3V to –15V)
SPACE: Logic “0” (+3V to +15V)
A
B
C
D
b 0 b 1 b 2 b 3 b 4 b 5 b 6 (b 7 )
SPACE “0”
