Star Micronics SCP700 Series User Manual page 170

166
Pin Signal
Direction
No. Name
4 DTR OUT
6 DSR IN
7 SG —
20 DTR OUT
25 INIT IN
Printer side
(D-sub 25 pin)
F-GND 1
TXD 2
RXD 3
RTS 4
DSR
6
7
S-GND
DTR 20
25
INIT
2) X-ON/X-OFF mode
Indicates whether or not the printer can receive data from the host.
This signal is a space, except in the following cases.
1. After reset until communication is possible
2. During test printing
Signal line that indicates if the host computer can receive data.
SPACE: host can receive
MARK: host cannot receive
In the X-ON/X-OFF or Star mode, the status of this signal is not confirmed.
• The status of this signal is not confirmed.
This signal can be specified as an internal reset signal using of DIP Switch 7 (page 163).
MARK of 1ms or longer activates the reset.
Signal ground
Same as RTS (Pin 4).
This signal can be specified as an internal reset signal using of DIP Switch 8 (page 163).
SPACE of 1ms or longer activates the reset.
Function
IBM PC side
25 pin 9 pin
1
2 3
3 2
4 7
5 8
6 6
7 5
8 1
20 4
F-GND
TXD
RXD
RTS
CTS
DSR
S-GND
DCD
DTR