2-Port RS422/485 Serial PCI Card
7
3.
Click
〝
Next
〞
to continue, and click
〝
Finish
〞
to complete the
installation.
4.
To check the Installation, right click on
〝
My Computer
〞
and
choose
〝
Manage
〞
. Choose
〝
Device Manager
〞
and double click
〝
Ports
〞
.
DB9-Male Pin Assignment:
RS422 Cable Wiring:
RS485 (2-wire) Cable Wiring:
6. RS422/485 Pin Assignments and Cable Wiring
DB9 (RS422 to USB Cable)
1 TXD-
2 TXD+
3 RXD+
4 RXD-
5 GND
(RS422 Device)
1 TXD-
2 TXD+
3 RXD+
4 RXD-
5 GND
NC = No connection
1 5
6 9
9 Pins Signal
1 TXD- (DATA-)
2 TXD+ (DATA+)
3 RXD+
4 RXD-
5 GND
6 NC
7 NC
8 NC
9 NC
DB9 (485 to USB Cable)
1 DATA-
2 DATA+
3 NC
4 NC
5 GND
(RS485 Device)
1 DATA-
2 DATA+
3 NC
4 NC
5 GND
