Serial Interface; Interface Specifications - Star Micronics TSP400 Series Programmer's Manual

4-1. Interface Specifications

Transmission type ................. Asynchronous serial interface
Baud rate (bps) ..................... 2400, 4800, 9600, or 19200
Word format
Start bit: ......................1
Data bits: ....................7 or 8 (Selected by DIP switch)
Parity: ......................... Odd, Even, or None
Stop bit: ......................1
Signal polarities
RS-232C ..................... Mark = Logic "1" (–3V to –15V)
RS-422A ..................... Mark = Logic "1" ("A" negative with respect to
Handshaking ......................... DTR or XON/XOFF mode (Selected by DIP
Mark [1]
Space [0]
A

4. SERIAL INTERFACE

(Selected by DIP switch)
(Selected by DIP switch)
Space = Logic "0" (+3V to +15V)
"B" by at least 0.2V: A
Space = Logic "0" ("A" positive with respect to
"B" by at least 0.2V: A
switch)
b0 b1 b2 b3
– 6 –
B – 0.2V)
B + 0.2V)
b4 b5 b6 (b7)
B C D
A: Start bit
B: Data bits
C: Vertical parity bit
D: Stop bit