Standard Serial Interface Pins And Signal Names - Star Micronics Star SCP700 Series Programmer's Manual

14

Standard serial interface pins and signal names

Pin Signal
Direction
No. Name
1 FG —
2 RXD IN
3 TXD OUT
4 DTR OUT
5 SG —
6 DSR IN
7 RTS OUT
8 INIT IN
9 N/C —
5
9
Frame Ground
Receive data
Transmission data
Data terminal ready signal. This signal changes to SPACE when the printer is ready to
receive data.
Signal ground
Signal line that indicates if the host computer can receive data.
SPACE: host can receive
MARK: host cannot receive
The status of this signal is not confirmed.
This signal can be specified as an internal reset signal using Switch 7 of DIP Switch 1
(page 4). MARK of 1ms or longer activates the reset.
Same as DTR (Pin 4).
This signal can be specified as an internal reset signal using Switch 8 of DIP Switch 1
(page 4). SPACE of 1ms or longer activates the reset.
Not connected
1
6
Function