ScholarLens Back to search
2004•Unpublished venueRequires access

PROGRAMMABLE LOGIC CONTROLLERS

Gustafson, J. Robert, and Mark T. Morgan

Open publisher page 5 citations

Abstract

This chapter will cover the basics of programmable logic controllers (PLCs). PLCscan perform all of the functions of relay-based control systems and much more. Theyhave replaced hard-wired relay-based control systems in most industries because oftheir compact size, ruggedness, and most importantly, their ability to be easily reprogrammed.Changes in a control system or process function can be made with minimalre-wiring. One reason for their rapid adoption was that they could be programmed using thesame language used for relays, i.e., ladder logic diagrams. For this same reason, understandinghow PLCs operate is generally only a small step from understanding ladderlogic diagrams.

About this research paper

What this paper is about

This chapter will cover the basics of programmable logic controllers (PLCs). PLCscan perform all of the functions of relay-based control systems and much more. Theyhave replaced hard-wired relay-based control systems in most industries because oftheir compact size, ruggedness, and most importantly, their ability to be easily reprogrammed.Changes in a control system or process function can be made with minimalre-wiring. One reason for their rapid adoption was that they could be programmed using thesame language used for relays, i.e., ladder logic diagrams. For this same reason, understandinghow PLCs operate is generally only a small step from understanding ladderlogic diagrams.

Why it matters

OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

This chapter will cover the basics of programmable logic controllers (PLCs). PLCscan perform all of the functions of relay-based control systems and much more. Theyhave replaced hard-wired relay-based control systems in most industries because oftheir compact size, ruggedness, and most importantly, their ability to be easily reprogrammed.Changes in a control system or process function can be made with minimalre-wiring. One reason for their rapid adoption was that they could be programmed using thesame language used for relays, i.e., ladder logic diagrams. For this same reason, understandinghow PLCs operate is generally only a small step from understanding ladderlogic diagrams.

Key concepts: Ladder logic, Programmable logic controller, Programmable logic device, Simple programmable logic device, Function block diagram, Relay, Erasable programmable logic device, Cover (algebra)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
PROGRAMMABLE LOGIC CONTROLLERS — Research Paper | ScholarLens