Moxa Technologies PCI Express Board User Manual page 83

PCI Express Board User's Manual
Female DB25 (OPT8A+/S+)
13
Pin
2
3
4
5
6
7
8
20
Female DB25 (OPT8F+/Z+)
Pin
2
3
7
14
16
Female DB25 (OPT8K+/I+)
Pin
2
3
7
14
16
1
25 14
RS-232
RxD
TxD
CTS
RTS
DTR
GND
DCD
DSR
RS-422
RxD+(B)
TxD+(B)
GND
RxD-(A)
TxD-(A)
RS-422 /
4-wire RS-485
RxD+(B)
TxD+(B)
GND
RxD-(A)
TxD-(A)
2-wire RS-485
Data+(B)
---
GND
Data-(A)
---
5-8
Pin Assignments