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What is Introduction to PLC Programming Basics about?

This document provides an introduction to programmable logic controllers (PLCs). It discusses that PLCs were invented to replace sequential relay circuits for machine control. PLCs look at their inputs and depending on the state, turn their outputs on or off based on a programmed logic. The document then gives a brief history of PLCs, including that they were first introduced in the late 1960s to reduce costs of replacing complicated relay-based machine control systems. It also discusses some of the early t

Author

irfanWPK

Language

EN