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. Historically, relays have been used since the late 1800’s to control simple processes. They were used in the early days to control rail
| Category | arts |
|---|---|
| Subject | The Arts |
| Year | 2023 |
| Authors | |
| Chapters | 15 |
| Word Count | |
| Price | |
| License | Creative Commons - Attribution - https://creativecommons.org/licenses/by/4.0/ |