Moxa Technologies C168P - Manual (Page 13)

Introduction
C168P User’s Manual 1-7
Opt8J
v RS-422/485 connection box with 8 port female DB25 connectors.
v 1.5 meter DB62 to DB62 cable.
v 110V or 220V adapter.
1
2
3
4
5
6
7
8
Tx Rx
Opt8J
C168 P
Opt8J is the RS-422/485 connection box with 8 port female DB25 connectors for
MOXA 8 port boards, including the C168P. There are 8-DIP switches on the side of
the Opt8J. Each switch controls the communication mode (RS-422 or RS-485) of
each port, respectively.
RS-422/485 Port Switch of Opt8J
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
DIP
ON DIP
RS-422 Mode
Set the respective switch to OFF position to use RS-422 interface. This means the
port is always ready to transmit and receive data simultaneously (full-duplex).