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Programmable Logic Controllers, Third Edition
by: W. Bolton
Topics include: program instruction list, master control relay, logic gate system, ladder diagram rung, equivalent ladder diagram, internal relays, momentary input, four answer options, sequential function chart, automatic drilling machine, timer contacts, status lamp, input contacts, programming terminal, stops the conveyor, input ceases, analogue input, entrance barrier, function block diagrams, relay outputs, ladder diagrams, pulse input, start switch, double acting cylinder, proximity switch
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Book Description
This is the introduction to PLCs for which baffled students, technicians and managers have been waiting. In this straightforward, easy-to-read guide, Bill Bolton has kept the maths to a minimum, avoided detailed programming instructions and presented the subject in a way that is not device specific - increasing its applicability to courses in electronics and control systems.
Having read this book, you should be able to:
* Identify the main design characteristics and internal architecture of PLCs.
* Describe and identify the characteristics of commonly used input and output devices.
* Explain the processing of inputs and outputs of PLCs.
* Describe communication links involved with control systems.
* Develop ladder programs for the logic functions AND, OR, NOR, NAND, NOT and XOR.
* Demonstrate use of internal relays, timers, counters, shift registers, sequencers and data handling.
* Identify fail/safe methods.
* Identify methods used for fault diagnosis, testing and debugging programs.
The third edition has been expanded to contain new material on fail / safe operating conditions, Sequential Function Charts, floating point numbers and dummy rungs, with discussion of commercial PLCs. There is also extended coverage on the programming of PLCs for fault diagnosis, as well as distributed systems and program documentation. Each chapter is followed with a Problems section, for students to put the theory they have learnt into practice. Appendices contain further problems, and answers to all questions from each chapter are included at the back of the book.
* New edition expanded to cover safety - a key aspect of PLC use
* Further problems included at the end of each chapter, with a complete set of answers given at the back of the book
* Presentation is not device-specific, maximising applicability to a range of courses in electronics and control systems
Book Info
Text introduces programmable logic controllers for first year undergraduate students in engineering. Includes new material on fail/safe operating conditions, Sequential Function Charts, floating point numbers, dummy rungs, and discussion of commercial PLCs. Includes chapter problems and answers. Previous edition: c2000. Softcover.
From the Publisher
Ideal as an accessible introduction for university students, the second edition includes expanded sections on internal architecture, input-output devices, networks, and programming languages with microprocessor systems, and has been fully revised in line with the new BTEC Higher National unit on PLCs, and the 2000 specifications for the Advanced GNVQ unit from Edexcel.
About the Author
Bill Bolton is a leading author of college texts in engineering and other technical subjects. As well as being a lecturer for many years, he has worked in industry, been Head of Research, Development and Monitoring at the British Training and Education Council and acted as a consultant for UNESCO and the Further Education Unit (FEU)
Reviews:
This is a great book for beginning PLC programmers, but there are numerouse errors throughout the book which cause confusion when trying to understand the use of Internal Relays, Timers and Counters. Use caution and refer back to the text when completing the tests at the end of each section and when reading about how some ladder logic is functioning, I noticed miss-labled Inputs.
Do not buy this book if youre programming STL: I did not get any benefits of this book, sadly.
It is useless with Siemens S7 and you want to learn the STL language. To few examples with this language. Sorry
This book is an excellent text for anyone just starting out or just wanting to brush up on programmable logic controllers. The content and layout of the information was very good. It made it easy to start with the basics and work up to the more complex operations. I especially liked that the book did not focus on one particular brand name of controller, but mentioned each brand and included many program examples of all the major brands.
The only drawback I found was that there seemed to be a lot of evident errors and misprints witht the text. Some are obvious such as incorrect numbering, while others I caught by asking questions of experienced individuals. I liked the fact that each chapter included a set of chapter review questions, but once again there seemed to be many misprints and incorrect answers. I only wish that the publisher would have checked closer for the misprints.
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