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sinking sourcing io

1 article tagged “sinking sourcing io”.

Sinking vs sourcing PLC input wiring diagram showing NPN and PNP sensor connections
sinking sourcing ioplc wiringnpn pnp sensors

Sinking vs Sourcing PLC I/O: Wiring It Right

Sinking vs sourcing PLC I/O confuses almost every technician at least once. Here is the current-flow logic that makes it click, plus real wiring rules.

Jun 30, 2026 · 8 min read

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