In modern industry the Programmable Logic Controllers (PLCs) are the most important devices without which there would have been no mass production and our technical civilisation as we know it today. PLCs in industry are as important as standard PCs in our offices and homes. During the time the prices of PLCs have reached the level when it is both convenient and reasonable to use them in all kinds of installations: ranging from the advanced controlling of industry processes to the very simple home solutions e.g.: heating installations.
The presented book comes into being on the basis of student tutorials held for the Digital Control class at the Department of Process Control at the Faculty of Mechanical Engineering and Robotics at The University of Science and Technology AGH in Cracow. Both authors work at AGH as academic lecturers. Many years of specialization in PLCs programming together with experienced gathered in industry in starting up installations based on controllers have given them the knowledge which is presented in the book. Also the AGH students made a contribution to this book, especially to make PLCs programming easier to understand for beginners.
The book concerns programming the controllers of the Japanese manufacturer OMRON, which belongs to the leading automation equipment manufacturers. On the market there is still lack of practical books and the main aim of our book is to present examples of particular instructions with their descriptions. The more advanced the examples are, the more specialised commands they include, and this is the area, where for many users problems occurred. The authors believe that the information gathered in the presented book help the users overcome these problems.
This book is dedicated to automation and computer science students and engineers, who deal with applying programmable logic controllers in practice.