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61
Communicating with the PC Using C200H Direct Communication
Section 2-7
Connection to C
jj
H
Connect the CPU unit with an I/O connection cable. The following restrictions ap-
ply when making this connection.
S
A maximum of one CPU unit can be connected.
S
Up to two I/O units can be connected for the one CPU unit, but I/O extension
units cannot be connected.
S
It is not possible to connect a C
jj
H I/O unit after the NT20S. It must be the final
connection in the system.
Host interface connector
I/O connection cable
(C20H-CN
jj
2)
CPU unit
I/O unit
Max. 2 units
I/O connection cable
(NT20M-CNP
jj
2
/C20H-CN
jj
2)
(Rear face of NT20S)
I/O unit
I/O connection cable
(C20H-CN
jj
2)
Note:
When connecting a C
jj
H, always install a noise filter.
1. Insert the noise filter in the power supply line of the C
jj
H.
2. Make the distance between the noise filter and the C
jj
H as short as possible
and separate it from the power supply line.
3. Install the noise filter case on the FG face.
4. Use a ZGB2202-01U(manufactured by TDK) or equivalent as the noise filter.
Noise filter
1
2
4
3
+24V
IN
OUT
24V
+
–
Содержание NT20S
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