Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 209

Wiring Methods
IC101
CPU Rack
I/O Expansion Cable
Control panel
IC101
CPU
CPU Rack
I/O Expansion Cable
Control panel
Wiring Communications Lines
Recommended Wiring
CPU 1:1 Isolating
L2
L1 transformer
LG
GR
Match to the I/O
Expansion Cable.
Wiring Susceptible to Noise
L2
L1
LG
GR
When using communications from one or more Rack in the system, ground
the entire system so that only one point is grounded. (Refer to user documen-
tation for the devices connected.) For detailed connection methods, refer to
the Operation Manual for the Communications Unit.
Recommended Wiring
Wiring Susceptible to Noise
Control panel
CPU Rack
IC101
I/O Expansion Cable
I102
Expansion Rack
Control panel
I102
L2
L1
LG
GR
Expansion Rack
Control panel
Control panel
CPU Rack
IC101
GR
I/O Expansion Cable
Control panel
Expansion Rack
II102
GR
Section 5-4
1:1 Isolating
L2
L1 transformer
LG
GR
Noise source
Grounded to building
Control panel
Expansion Rack
II102
GR
GR
GR
Noise source
GR
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