Programmable Logic Controllers: Hardware and Programming is an intro-ductory text that explores many aspects of PLCs in an easy-to-understand manner. The key concepts of PLCs are discussed …

Programmable logic controllers – PLCs – are designed for interlocking, timing, counting and math operation tasks at high speeds, replacing auxiliary contactors, timers and electromechanical counters …

Each PLC contains a pre-written program for determining the systems behavior known as a BIOS in the PC and as FIRMWARE in the PLC. Each PLC contains a certain amount of RAM or random access …

The worksheet below serves as a checklist of things to consider when determining programmable controller requirements. It lists the most important areas to consider when choosing a system, as well …

The development of low co st computer has brought the most recent rev- olution, the Programmable Logic Controller (PLC). The advent of the PLC began in the 1970s, and has become the most …

Introduction to Programmable Logic Controllers – Part I Module 1: Introduction to PLC Hardware In this course module, the PLC hardware is discussed. After studying this module, the student will know the …

Introduction to the Programmable Logic Controller (PLC) 1.1 In this chapter, we will learn the following: