APPENDIX
RTP-3280 Thermal Receipt Printer
62
Appendix II : RS232C Connector Pin Assignment
Serial RS232C connector to PC/HOST
Connector Type: D-sub 9Pin (Female)
1.
Pin assignment
Pin # Signal
I/O
Transmission
Function Description
1
2 TXD Output Printer
PC/Host
Printer status data
3 RXD Input
PC/Host
Printer
Receive data
4 DTR Input
PC/Host
Printer
PC/HOST set ready signal
5 GND
Power
ground
6 DSR Output PC/Host
Printer
Printer set ready signal
7 CTS Input PC/Host
Printer
PC/Host ACK to RTS signal
8 RTS Output
Printer
PC/Host
Printer request send signal
9
2.
Series Cable Connection for Printer
PC/HOST PRINTER
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
6
9
1
5