Interface Connections - Star Micronics SLIP SP298 SERIES Programmer's Manual

Pin Signal
Direction
No. Name
20 DTR OUT
21 - 24 N.C.
25 INIT IN

Interface connections

Refer to the interface specifications for the host computer for details on
connecting to its interface connector. The following illustration shows a
typical connection configuration.
Printer side
(D-sub 25 pin)
F-GND 1
TXD 2
RXD 3
RTS 4
DSR
6
7
S-GND
DTR 20
INIT 25
Indicates whether data receive from host is enabled or disabled.
DTR/DSR Communication Mode
Space when receive is enabled.
X-On/X-Off Communication Mode
Always space, except during following conditions:
• Period between reset and communication enabled
• During self-test printing and dot alignment adjustment
Not connected
• DIP Switch 10 = OFF
This signal not used.
• DIP Switch 10 = ON
This signal becomes reset signal. Printer is reset whenever signal is in mark state with pulse
width of 1mS or more.
Function
IBM PC side
25 pin
1
2
3
4
5
6
7
8
20
13
9 pin
F-GND
3 TXD
2 RXD
7 RTS
8 CTS
DSR
6
5 S-GND
1 DCD
4 DTR