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7000 Bus Converter User Manual (version 1.2,Feb/2003, 7PH-006-10) --------------- 20
2.5 PCI-7520AR Pin Assignment and Specification:
CON2: RS-485/422 DB9 Male Connector
Terminal 2-wire RS-485 4-wire RS-422
1
2
DATA+ TX+
3 Not Connect
4
5
Not Connect RX+
6
7
DATA- TX-
8
9
Not Connect RX-
The PCI-7520AR is exactly the same as 7520AR except for the PCI
interface. It is designed for easy installation.
RXD
TXD
GND
CN1
DB9M FEMALE
1
6
2
7
3
8
4
9
5
TX-
TX-
TX+
TX+
RX+
RX+
RX-
RX-
D-
D-
D+
D+
CN2
DB9S MALE
5
9
4
8
3
7
2
6
1
CN2
DB9S MALE
5
9
4
8
3
7
2
6
1
RS-485 ( D+, D- ) RS-422 ( RX+, RX-, TX+, TX- )