User Manual
 7000 Bus Converter User’s Manual (Version 1.8  Jan/2006, 7PH-006-18)  --------------- 17 
2.5 PCISA-7520AR Pin Assignment and Specification: 
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- )
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 PCISA-7520AR is exactly the same as 7520AR except for the PCI 
and ISA interface. It is designed for easy installation.










