Signal – AAEON PFM-C42C User Manual
Page 18
P C / 1 0 4 P e r i p h e r a l M o d u l e
P F M - C 4 2 C
PFM-C42C Quick Installation Guide
1-18
1.15 RS-232 Serial Port Connector (COM1) (For 4/8-port)
Pin S i g n a l
P i n S i g n a l
1 DCD#1(485D-
/
422TXD-) 2 RXD1(422RXD+)
3
TXD1(485D+ / 422TXD+)
4
DTR#1(422RXD-)
5 GND
6 DSR#1
7 RTS#1
8 CTS#1
9 RI#1
10
N.C
1.16 RS-232 Serial Port Connector (COM2) (For 4/8-port)
Pin S i g n a l
P i n S i g n a l
1 DCD#2(485D-
/
422TXD-) 2 RXD2(422RXD+)
3
TXD2(485D+ / 422TXD+)
4
DTR#2(422RXD-)
5 GND
6 DSR#2
7 RTS#2
8 CTS#2
9 RI#2
10
N.C
1.17 RS-232 Serial Port Connector (COM3) (For 4/8-port)
Pin S i g n a l
P i n S i g n a l
1 DCD#3
2 RXD3
3 TXD3
4 DTR#3
5 GND
6 DSR#3
7 RTS#3
8 CTS#3
9 RI#3
10
N.C
1.18 RS-232 Serial Port Connector (COM4) (For 4/8-port)
Pin S i g n a l
P i n S i g n a l
1 DCD#4
2 RXD4