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Show a ladder diagram of a NOR Gate.

Show a ladder diagram of a NOR Gate. Correct Answer <img alt="F1 Shubham B 27-10-21 Savita D23" src="//storage.googleapis.com/tb-img/production/21/11/F1_Shubham%20B_27-10-21_Savita_D23.png" style="width: 235px; height: 95px;">

PLC Ladder Logic:

  • It is visual programming language is a PLC programming language called ladder logic or ladder diagram (LD).
  • It is a graphical PLC programming language that expresses logic operations with symbolic notation using ladder diagrams.
  • The ladder logic program consists of Virtual relay-type contacts and coils​.
  • It looks very similar to electrical relay circuits.
  • Ladder logic is mainly for bit logic operations, although it is possible to scale a PLC analog input.
  • Ladder logic is a fast and simple way of creating logic expressions for a PLC in order to automate repetitive machine tasks and sequences.
  • It is used in a multitude of industrial automation applications.

Some industrial automation applications are Ball Mill Lubrication System, Logistics Package Conveying and Sorting, Cement Batching, etc

Example of Ladder Logic Function blocks:

1. AND Function blocks:

[ alt="F1 Nakshtra 17-11-21 Savita D29" src="//storage.googleapis.com/tb-img/production/21/11/F1_Nakshtra_17-11-21_Savita_D29.png" style="width: 205px; height: 24px;">

2. OR Function blocks:

[ alt="F1 Nakshtra 17-11-21 Savita D30" src="//storage.googleapis.com/tb-img/production/21/11/F1_Nakshtra_17-11-21_Savita_D30.png" style="width: 161px; height: 82px;">

3. X-OR Function blocks:

[ alt="F1 Nakshtra 17-11-21 Savita D31" src="//storage.googleapis.com/tb-img/production/21/11/F1_Nakshtra_17-11-21_Savita_D31.png" style="width: 207px; height: 82px;">

4. NOR Function blocks:

[ alt="F1 Shubham B 27-10-21 Savita D23" src="//storage.googleapis.com/tb-img/production/21/11/F1_Shubham%20B_27-10-21_Savita_D23.png" style=" width: 235px; height: 95px;">

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The correct sequence should be
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