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pnp npn

1 article tagged “pnp npn”.

PNP and NPN 3-wire sensor wiring diagram to PLC input terminals

3-Wire Sensor Wiring: PNP vs NPN to PLC Inputs

PNP or NPN sensor, sinking or sourcing input? Learn exactly how to wire 3-wire sensors to any PLC input card with real wiring rules and common mistakes.

Jul 1, 2026 · 9 min read

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