Design of a control scheme using a programmable controller

Abstract

This report lS about Programmable Controllers in general and a control scheme is investigated as one of their apolications. It examines the history, the nature, characteristics and capabilities of the Programmable Logic Controllers (PLCs). A detail led description of the above is made, having as a reference the PLCs, SLC 500 by Allen TSX 47 by Telemechanique. Bradley and the F'LC of the H.T.I .. , It also deals with the programming capabilities of the Ladder Diagram programming language. In addition, it covers an application program for a particular control scheme. The main purpose of this report is to provide a basic, clear, and outlined idea on PLCs and their applications. Moreover it intends to get the reader familiar with such applications by dealing with a certain design of a control scheme with a detailed explanation of the program and an overall costing of the system. The unique feature of this report is that it does not depend on the reader's background knowledge on F'LCsF emphasis is given to the simplicity of the language used. I tried to write generic and short topics with simple and clear statements. I sincerely hope, that it will be both interesting to read and useful.