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Inst Tools > Blog > Practical Questions > PLC connected to Three Pushbutton Switches

PLC connected to Three Pushbutton Switches

Suppose we have a PLC connected to three pushbutton switches. Sketch a Ladder Diagram program for program example.

Last updated: February 12, 2021 9:53 pm
Editorial Staff
Practical Questions
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Suppose we have a PLC connected to three pushbutton switches as shown in this illustration:

PLC Circuit Answers

Sketch a Ladder Diagram program for this PLC to energize the lamp if the following input conditions are met:

  • Either switch A or switch B pressed
  • Switch C unpressed

Answer:

PLC Circuit ladder Answers

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Pushbutton Example

Credits : by Tony R. Kuphaldt

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1 Comment
  • Santosh says:
    April 13, 2020 at 8:29 am

    The ladder u have shown .in answer is wrong …

    Reply

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