AAEON PCM-8120 - Manual (Page 33)

C o m p a c t B o a r d P C M - 8 1 2 0
Chapter 2 Quick Installation Guide 2 - 20
2.27 COM1~COM4 Ports Connector (CN 11)
Pin Signal Pin Signal
1 DCD1 2 DSR1
3 RXD1 4 RTS1
5 TXD1 6 CTS1
7 DTR1 8 RI1/+5V/+12V
9 COMGND 10 N.C.
11 DCD2(422TXD-/485DATA-) 12 DSR2
13 RXD2(422RXD+) 14 RTS2
15 TXD2(422TXD+/485DATA+) 16 CTS2
17 DTR2(422RXD-) 18 RI2/+5V/+12V
19 COMGND 20 N.C.
21 DCD3 22 DSR3
23 RXD3 24 RTS3
25 TXD3 26 CTS3
27 DTR3 28 RI3/+5V/+12V
29 COMGND 30 N.C.
31 DCD4 32 DSR4
33 RXD4 34 RTS4
35 TXD4 36 CTS4
37 DTR4 38 RI4/+5V/+12V
39 COMGND 40 N.C.