Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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Wiring Methods
Section 3-5
• If the I/O wiring and power cables must be placed in the same duct, they
must be shielded from each other using grounded steel sheet metal.
3-5 Wiring Methods
3-5-1 Example I/O Wiring for X and XA CPU Units
Input Wiring
The input circuits for X and XA CPU Units have 24 points/common. Use power
lines with sufficient current capacity for the COM terminals.
Upper Terminal Block
AC-power-supply models have a 24-VDC output terminals on the lower termi-
nal block. They can be used as a DC power supply for the input circuit.
To use high-speed counters, make the following setting in the PLC Setup.
Enable using the high-speed counters with
Built-in Input - High Speed
Counter 0 to 3 - Use high speed counter 0 to 3 . For details on high-speed
counter inputs, refer to 2-2-3 I/O Specifications for XA and X CPU Units .
300 mm min.
300 mm min.
PLC I/O wiring
PLC power supply
cable and general
control circuit wiring
Power lines
Low-current cables
Control cables
Power cables
Ground to 100
Ω
or less
200 mm min.
PLC I/O wiring
PLC power
supply cable
and general
control circuit
wiring
Power lines
Steel sheet metal
Ground to 100
Ω
or less
L1 L2/N
COM
01 03 05 07 09 11 01 03 05 07 09 11
00 02 04 06 08 10 00 02 04 06 08 10
CIO 0 CIO 1
24 VDC
CIO 0 CIO 1