PLC wiring micro-lab

Wire a real PLC input correctly.

Connect power, signal, and common in the right order—then prove the PLC sees the field device.

  1. Step 1Connect sensor power
  2. Step 2Connect the PLC input
  3. Step 3Present a target
Live I/O bench

24 VDC digital input wiring

IEC 61131-3

3-WIRE SENSOR

BROWN +24 V

BLUE 0 V

BLACK SIGNAL

PLC INPUT CARD

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1Real control concept
3Proven operating states
0Downloads or card details