user manual

Robust Panel PC APC-9172
Chapter 2 Hardware Installation
2 - 3
2.2 COM1~4 RS-232/422/485 Serial Port Connector (CN16)
5
1
9
6
COM 4 is reserved for touch screen.
Pin Signal Pin Signal
1 DCD1 2 DSR1
3 RXD1 4 RTS1
5 TXD1 6 CTS1
7 DTR1 8 RI1
9 GND