Omron NX1P2 series User Manual page 218

5 Installation and Wiring
• As shown in the following diagram, when using shielded cable for I/O wiring, connect the shield
near the Controller to the enclosure ground terminal.
Follow the instructions in the Communications Unit manual for preparing shielded communica-
tions cable.
 Controller Ground Terminals
The Controller has the following ground terminal.
Grounding
type
Functional
Grounding
When the functional ground terminal is correctly grounded, it is generally effective in suppressing
power supply common noise. Occasionally, however, grounding this terminal will result in picking up
more noise, so be careful when using it.
5 - 86
Controller
Input Output
Common Common
Shielded Cable Ground
Symbol
Ground this terminal when power supply noise causes malfunctioning.
Connection
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)