| Terms | Applicable Categories |
|---|---|
| N+1 redundant system | Power Supplies |
| naming connected devices | Networks |
| naming Units | Networks |
| negative logic | Digital Panel Indicators |
| network address | Programmable Controllers |
| network communications | Programmable Controllers |
| network communications unit | Programmable Controllers |
| network power voltage monitor | Networks |
| neutral zone | Digital Panel Indicators |
| node address | Programmable Controllers |
| noise | Networks |
| noise filter | Inverters |
| noise immunity | Timers |
| noise immunity for I/O line impulse | Power Supplies |
| no-load | Inverters |
| nominal value | Axial Fans |
| non-modulated light | Photoelectric Sensors |
| Normal Mode | Programmable Controllers |
| normal mode voltage | Digital Panel Indicators |
| NS-Runtime | Programmable Terminals |
| NT Link | Programmable Terminals |
| number of contact poles | General Purpose Relays |
| number of inputs | Temperature Controllers |
| number of motor poles | Inverters |
| number of notches | Push Buttons / Indicator Lamps |
| number of steps | Counters |
| Numeral Display | Programmable Terminals |
| numeral unit and scale settings | Programmable Terminals |
| numerical aperture | Networks |