Advantech PPC-L127T - Com2 (Cn22); COM3 RS-232 Serial Port (CN31)

29 Appendix A
A.4 COM2 (CN22)
A.5 COM3 RS-232 serial port (CN31)
Table A.4: COM2 (CN22)
Pin Signal RS-232 RS-422 RS-485
1 DCD TX- DATA-
2RX TX+ DATA+
3 TX RX+
4DTR RX-
5 GND GND
6DSR
7 RTS
8CTS
9 RI
Table A.5: COM3 RS-232 serial port (CN31)
Pin Signal Pin Signal
1 DCD 2 RXD
3TxD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI