Hybrid PLC Mechatronics - Chapter 1 Introduction to PLCs

Programmable logic controllers (PLCs) were introduced to industry between 1968 and 1970 as a way to replace large expensive panels of relays, timers, and counters. Automotive manufacturers were looking for ways to simplify start up of new car lines after model changeovers each year and save money in the cost of manufacturing installations. This statement starts the text introducing PLCs and the study of how they are used to automate processes. The Hybrid Text is complemented by the Hybrid Lab Text and together they form a good study of the use of PLCs as well as instrumentation to automate a machine or complete process. The YouTube videos were recorded primarily during the covid time period with the assumption that the course(s) may necessarily be taught remotely for a number of years. The picture of instructors from around the world at the end of this chapter shows a school picture taken in 2008 in Germany at a Siemens School to Train the Trainer. Notice the number of Chinese. There were 19 from China, 4 from the US, 7 from Mexico and South America, 7 from the eastern European/Russian area and one I believe from Malaysia. This school represents the world and its desire for good PLC education. Accompanying YouTube Video (38:27): PLC Series Chapter 1 - Introduction (see Additional Public Access to Materials below)
Primary Material Type:
Online Course Module
Other Material Types:
Open Textbook
University of Toledo
plcs, automation, engineering, engineer, programmable logic controllers

Industry / Occupation

Industry Sector:
Manufacturing -- Miscellaneous Manufacturing -- Robotics, Mechatronics, and other Miscellaneous Manufacturing (3399)
Production Occupations (51-0000)

Education / Instructional Information

Instructional Program:
Engineering Technologies/Technicians (15)
Credit Type:
  • Credit
Credential Type:
  • Credential
Educational Level of Materials:
  • 2nd year Community College or equivalent
Time Required:
1 hour
Quality Assurance Organization:
OMWP Editorial Board
Quality of Subject Matter was assured by:
  • Consultations during development of instructional materials
Quality of Online/Hybrid Course Design assured by:
  • None

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This work is licensed under a Creative Commons Attribution 4.0 International License.