Star Micronics Star SCP700 Series - Manual (Page 26)

22
Optional serial interface pins and signal names
Pin
No. Signal
Name
Direction Function
1 FG — Frame Ground
2 TXD OUT Transmission data
3 RXD IN Receive data
4 RTS OUT Data terminal ready signal. This signal changes to SPACE when the printer is ready to
receive data.
6 DSR IN 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 of DIP Switch 7 (page 21).
MARK of 1ms or longer activates the reset.
7 SG — Signal ground
20 DTR OUT Same as RTS (Pin 4).
25 INIT IN This signal can be specified as an internal reset signal using of DIP Switch 8 (page 21).
SPACE of 1ms or longer activates the reset.
13
25
1
14