Activities Manual For Programmable Logic Controllers
Activities Manual For Programmable Logic Controllers
5th Edition
ISBN: 9781259682476
Author: Frank Petruzella
Publisher: Mcgraw-hill Higher Education (us)
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Chapter 5, Problem 3P

Explanation of Solution

Diagram:

The given program is redrawn to solve the problem of a nested vertical programmed contact as shown below.

Explanation:

  • In the above given ladder program, the contact switch B acts as a vertically nested switch since it is connected inside the branch vertically.
  • Thus, an alternate ladder logic program can be implemented by duplication of switch...

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