Serial Interface; General Specifications; Connector Signals And Functional Descriptions - Star AR-1000 Technical Manual

4

Serial Interface

4-1. General Specifications

Item
Interface
Synchronization System
Baud rate
Word length
Start bit:
Data bit:
Parity bit:
Stop bit:
Signal polarity
Mark:
Space:
Handshaking

4-2. Connector Signals and Functional Descriptions

Pin No. Signal name
1 F-GND
2 TXD
3 RXD
4 RTS
5 CTS
6 NC
7 S-GND
8~10 NC
11 RCH
12 NC
13 NC
14~19 NC
20 DTR
21~25 NC
RS-232C level
Asynchronous
300 - 19,200 bits per second (BPS) [selectable]
300, 600, 1200, 2400, 4800, 9600, 19200 BPS
1 bit
7 or 8 bits (selectable)
Odd, Even or None (selectable)
More than 1 bit length
Logic "1" (–3V to –15V)
Logic "0" (+3V to +15V)
DTR
X /X
ON OFF
Direction
— Printer chassis ground.
OUT This pin carries data from the printer
IN This pin carries data to the printer.
OUT Always space.
This signal is space when the computer is ready to send data.
—
The printer does not check this pin.
Unused.
— Signal ground.
Unused.
The printer sets this signal to space when it is ready to receive data.
OUT
This line carries the same signal as pin 20.
Unused.
Unused. (Signal ground.)
Unused.
OUT The printer sets this signal to space when it is ready to receive data.
Unused.
– 8 –
Specifications
Function