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 13, Problem 18RQ
Program Plan Intro

Contact histogram function:

  • Contact histogram function is used to detect the intermittent problems that are related to hardware or logic.
  • It provides the transition history of a data table value.
  • The delta time of the contact histogram refers to the elapsed time between the changes in states.

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