Omron Programmable Terminals NT631 Setup Manual page 125

Connecting to the Host's RS-422A/485 Port
Using the NT Link (1:N)
Method
108
Setting the DIP Switches on a C200HX/HG/HE(-Z)E Communications
Board
Set the switches on a C200HX/HG/HE(-Z)E Communications Board as fol-
lows.
Switch 1: (4-wire = RS-422A)
4
Switch 2: ON (terminator ON = terminating resistance enabled).
Setting Switches on a CQM1H Serial Communications Board
Set the switches on a CQM1H Serial Communications Board as follows.
2-wire or 4-wire selector (WIRE):
Terminating resistance switch (TERM): ON (terminator ON = terminating
Compatible Host Units
The OMRON PLCs that can be connected using the RS-422A/485 NT Link
(1:N) method are the CS/CJ-series, C200HX/HG/HE(-Z)E, and CQM1H mod-
els only. A Serial Communications Board/Unit or a Communications Board
must be installed to make the connection.
Check the model and series of the PLC against the type of CPU Unit or com-
munications board before making the connections.
The hosts that can be connected to the RS-232C port of the NT631/NT631C
by the RS-422A NT Link (1:N) function via an Adapter are indicated in the
table below.
PLC CPU Units with
Series Built-in NT Link
(1:1) Function
CS
Series
CJ
Series
(4-wire = RS-422A)
4
resistance enabled).
Serial Communications Board
(Inner Board slot 1)
Terminator Switch (TERM)
Set to ON (right side).
Wire Selection Switch (WIRE)
Set to 4 (right side).
CPU Unit that becomes
connectable by installing a
Communications Board/Unit
CS1G-CPU42/43/44/45-E(V1)
CS1H-CPU63/64/65/66/67-E(V1)
CS1G-CPU42H/43H/44H/45H
CS1H-CPU63H/64H/65H/66H/67H
(*2)
CS1D-CPU65H/67H
(*3)
CJ1G-CPU44/45
CJ1G-CPU42H/43H/44H/45H
(*3)
CJ1H-CPU65H/66H/67H
CJ1M-CPU11/12/13/21/22/23
Section 5-2
Model Name
(*1) CS1G
CS1H
(*1)
CS1D
(*1)
(*1)
CJ1G
CJ1H
(*3)
CJ1M
(*3)