Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 75)

Note
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Section 2-7
Connection to a C H Make the connection to the CPU unit with an I/O connecting cable. The following
restrictions apply to this connection.
Only one CPU unit can be connected.
Up to two I/O units can be connected to one CPU unit. However, it is not possible
to connect an I/O extension unit.
It is not possible to connect a C H I/O unit after a C200H interface unit. The
C200H interface unit must be the final element in the system.
CPU unit
I/O unit
Max. 2 units
(Rear face of NT600S)
C200H I/F unit
I/O extension cable
(C20M-CNP
2/
C20H-CN 2)
I/O connection cable
(C20H-CN
2)
I/O unit
I/O connection cable
(C20H-CN
2)
When making a connection to a C H, a noise filter must be installed.
1. Insert the noise filter in the power supply line of the C H.
2. Make the distance between the noise filter and the C H as short as pos-
sible, and separate it from the power supply line.
3. Connect the case of the noise filter to the FG face.
4. For the noise filter, use a ZGB2202-01U made by TDK or equivalent.
Noise filter
1
2
4
3
+24V IN OUT 24V
+
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