Q. The input device used for PLC is

A
Sensors
B
Alarms
C
Relays
D
All the above
Solution:
  • There are two main types of inputs: data inputs from devices and machines, and data inputs that are human-facilitated. The input data from sensors and machines are sent to the PLC.
  • Inputs can include on/off states for things like mechanical switches, buttons, and encoders.
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