Omron NV3Q Connection Manual page 109

Web Controller Series
9-3-3 RS-485 Connections
Connecting Using an RJ45
Connector and User-made
Cable
PLC type Link interface
23 points CPU Unit serial
(EH-WD23DR) port
Hitachi PLC
■
Connection Diagram
Refer to the previous RJ45 Modular Port diagram for the pin numbers for the
RJ45 Connector.
RJ45 Connector on CPU
Module Port (RS-485) on
Hitachi PLC
Signal
Pin No.
SG
1
-
2
-
3
SD+
4
SD−
5
RD−
6
7
RD+
8 -
User-made cable
Connection diagram
To power
PT
supply
Pin No.
1
2
3
4
5
6
7
Terminator setting (built-
8
in 120 Ω resistance)
Section 9-3
PT
PT
NV3W,
NV4W, or
NV3Q for RS-
485
Signal
+
-
FG
+SD
−SD
+RD
−RD
85