AAEON PFM-LNP - Manual (Page 24)

P C / 1 0 4 C P U M o d u l e P F M - L N P
Chapter 2 Quick Installation Guide 2-12
7 DTR#1
8 RI#1
9 GND
2.21 RS-232/422/485 Serial Port Connector (COM2)
Pin Signal
1 DCD#2(422TXD-/485DATA-)
2 DSR#2
3 RXD2(422RXD+)
4 RTS#2
5 TXD2(422TXD+/485DATA+)
6 CTS#2
7 DTR#2(422RXD-)
8 RI#2/12V/5V
9 GND
2.22 RS-232 Serial Port Connector (COM3)
Pin Signal
1 DCD#3
2 DSR#3
3 RXD3
4 RTS#3
5 TXD3
6 CTS#3
7 DTR#3
8 RI#3
9 GND