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 12, Problem 6RQ
Program Plan Intro

Sequencer instruction:

  • Programmable Logic Controller (PLC) sequencer instructions are used for controlling machines which provides a stepped sequence of repeatable operations.
  • It simplifies the ladder program by allowing the user to use a single or pair of instructions for performing complex operations.
  • Various sequencer instructions can be program based on the PLC manufacturer.
  • PLC sequencer performs ON or OFF output patterns using sequencer instructions.
  • The sequencer output instruction is used for controlling the output devices.

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