Intelligent RS-485 and RS-422 Adaptors
7
RS-422 Connector
The RS-422 port on the Intelligent Adaptor is a standard DB9 Male
connector, wired as follows:
Pin Function
1 n/c
2
RS-422 TX B (+ve)
3
RS-422 TX A (-ve)
4
RS-422 RX B (+ve)
5
RS-422 RX A (-ve)
6 & 7 Power ve
8 & 9 Power Supply -ve
RJ-45 Connector
The Intelligent RS-485 and RS-422 Adaptors also provide for the use of
Category 3 or Category 5 twisted pair cable via an RJ-45 socket on the
front panel. This connector is wired as follows:
Pin RS-485 RS-422
1
Power ve
Power ve
2
Power ve
Power ve
3
RS-485 B (+ve)
RS-422 TX A (-ve)
4
n/c
RS-422 RX B (+ve)
5
n/c
RS-422 RX A (-ve)
6
RS-485 A (-ve)
RS-422 TX B (+ve)
7
Power Supply -ve
Power Supply -ve
8
Power Supply -ve
Power Supply -ve
