PCI Express Boards
Pin Assignments
7-14
Device Side Pin Assignments—Male DB9
PIN
RS-232
RS-422/RS-485-4W
RS-485-2W
1
DCD
TxD-(A)
–
2
RxD
TxD+(B)
–
3
TxD
RxD+(B)
Data+(B)
4
DTR
RxD-(A)
Data-(A)
5
GND
GND
GND
6
DSR
–
–
7
RTS
–
–
8
CTS
–
–
Male DB25 (CBL-M78M25x8-100)
PIN
RS-232
RS-422/RS-485-4W
RS-485-2W
2
TxD
RxD+(B)
Data+(B)
3
RxD
TxD+(B)
–
4
RTS
–
–
5
CTS
–
–
6
DSR
–
–
7
GND
GND
GND
8
DCD
TxD-(A)
–
20
DTR
RxD-(A)
Data-(A)
www.ipc2u.ru
www.ipc2u.com
www.moxa.pro
