Postek G-2108 - Appendix A: Interface Specifications

G-2108/G-3106 User’s Manual Appendix A: Interface Specifications
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Appendix A: Interface Specifications
The RS232 connector on the printer is a DB9F:
Pin
Direction
Definition
1
/
/
2
Out
TX
3
In
RX
4
In
CTS
5
-
Ground
6
Out
RTS
7
In
DSR
8
Out
DTR
9
/
/
Connection with host:
Host 25S
Printer 9P
Host 9S
Printer 9P
TX 2
………
3 RX
RX 2
………
2 TX
RX 3
………
2 TX
TX 3
………
3 RX
DSR 6
………
8 DTR
DTR 4
………
7 DSR
DTR 20
………
7 DSR
DSR 6
………
8 DTR
RTS 4
………
4 CTS
RTS 7
………
4 CTS
CTS 5
………
6 RTS
CTS 8
………
6 RTS
GND 7
………
5 GND
GND 5
………
5 GND
Alternately you can just connect the 3 wires as follows:
Host 25S
Printer 9P
Host 9S
Printer 9P
TX 2
………
3 RX
RX 2
………
2 TX
RX 3
………
2 TX
TX 3
………
3 RX
GND 7
………
5 GND
GND 5
………
5 GND
pin 4
pin 4
pin 5
pin 6
pin 6
pin 7
pin 20
pin 8