Introduction to Programmable Logic Controllers (PLC)

Learning objectives

  • Describe the purpose of each of the major PLC components
  • Discuss basic PLC operation
  • Describe the internal structure of the CPU
  • Describe the internal architecture of a typical PLC
  • Identify typical input and output devices
  • Discuss the function of the I/O (input/output) modules
  • Identify types of signals used by PLC and discuss how they are handled
  • Define ladder logic and explain its use
  • Discuss how binary, octal, and hexadecimal numbering systems are used in PLC programming

Course overview

Programmable logic controllers (PLC) are specialized computers used in commercial and industrial control applications. A PLC is a solid-state, microprocessor-based programmable controller. While the specific applications vary widely, all PLCs monitor inputs and other variable values, make decisions based on a stored program, and control outputs to automate a process or machines.

The Introduction to Programmable Logic Controllers (PLC) training course examines the theory and structure behind PLC and the basic programming logic and number systems involved. This course describes PLC major components' design and function. It also converts numbers from decimal to binary, binary coded decimal, and hexadecimal.

This online training course covers:

  • Operation principles
  • Hardware
  • Internal architecture
  • Input devices
  • Output devices
  • Number systems

Introduction to Programmable Logic Controllers is part of the Programmable Logic Controllers training series.

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