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)