Appostar RTP-3280 - Appendix II: RS232 C Connector Pin Assignment

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