Rs-232/422/485 Serial Port Connector (Cn20) - Aaeon PCM-8200 Quick Installation Manual

C o m p a c t B o a r d
2.30 RS -232/422/485 Serial Port Connector (CN20)
Pin Signal
1 DCD1
3 RXD1
5 TXD1
7 DTR1
9 GND
DCD2
11
(422TXD-/485DATA-)
13 RXD2 (422RXD+)
TXD2
15
(422TXD+/485DATA+)
17 DTR2 (422RXD-)
19 GND
21 DCD3
23 RXD3
25 TXD3
27 DTR3
29 GND
31 DCD4
33 RXD4
35 TXD4
37 DTR4
39 GND
Chapter 2 Quick Installation Guide
P C M - 8 2 0 0
Pin Signal
2 DSR1
4 RTS1
6 CTS1
8 RI1
10 N.C.
12 DSR2
14 RTS2
16 CTS2
18 RI2/+12V
20 N.C.
22 DSR3
24 RTS3
26 CTS3
28 RI3
30 N.C.
32 DSR4
34 RTS4
36 CTS4
38 RI4
40 N.C.
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