Turning The Power On/Off When Using C200H Direct Communications - Omron NT20 User Manual

Communicating with the PLC Using C200H Direct Communications
2-7-3 Turning the Power ON/OFF When Using C200H Direct
Communications
!Caution Depending on the method used to turn the power ON and OFF, the entire sys-
Power ON
• It is not possible to connect a C@@H I/O Unit after the NT20. It must be
the final connection in the system.
I/O Connecting Cable
(C20H-CN@@2)
I/O Connecting Cable
(C20H-CN@@2)
I/O Connecting Cable
(NT20M-CNP@@2
/C20H-CN
Note When connecting a C@@H, always install a noise filter.
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. Install the noise filter case on the FG face.
4. Use a ZGB2202-01U (manufactured by TDK) or equivalent as the noise fil-
ter.
+24 V
The NT20-ST121-E functions as an expansion I/O unit of the PLC. Use the
following procedure to turn the power ON and OFF.
tem may stop. Follow the procedure described below to turn the power ON
and OFF.
Turn the power ON as follows:
Turn ON the power to the NT20.
"Connecting to Host" is displayed on the NT20 screen.
CPU Unit
I/O Unit
I/O Unit
(Rear face of NT20)
Host interface connector
Noise filter
1 4
IN OUT
2 3
Section 2-7
2 Units max.
+
24 V
–
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