EP002 — Knowledge Check

Five questions to check what stuck from "Digital Inputs vs Outputs." Try to answer in your head first, then reveal the answer to check yourself.

1. 01

   A photoeye is a: (A) Digital Output (B) Digital Input (C) Relay (D) Contactor

   Reveal answer
2. 02

   Which device is normally controlled by a PLC output? (A) Pressure Switch (B) Proximity Sensor (C) Solenoid Valve (D) Selector Switch

   Reveal answer
3. 03

   If the Output LED is ON but the motor is OFF, what should you check next?

   Reveal answer
4. 04

   True or False: A PLC input receives information from the machine.

   Reveal answer
5. 05

   True or False: An illuminated output LED always guarantees the load is energized.

   Reveal answer