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Full Description
This textbook, now in its sixth edition, continues to be straightforward and easy-to-read, presenting the principles of PLCs while not tying itself to one manufacturer or another. Extensive examples and chapter ending problems utilize several popular PLCs, highlighting understanding of fundamentals that can be used regardless of manufacturer. This book will help you to understand the main design characteristics, internal architecture, and operating principles of PLCs, as well as Identify safety issues and methods for fault diagnosis, testing, and debugging. New to This edition:
A new chapter 1 with a comparison of relay-controlled systems, microprocessor-controlled systems, and the programmable logic controller, a discussion of PLC hardware and architecture, examples from various PLC manufacturers, and coverage of security, the IEC programming standard, programming devices and manufacturer's software
More detail of programming using Sequential Function Charts
Extended coverage of the sequencer
More Information on fault finding, including testing inputs and outputs with an illustration of how it is done with the PLC manufacturer's software
New case studies
Contents
1. Programmable logic controllers2. Input-output devices3. Digital systems4. I/O processing5. Ladder and functional block programming6. IL, SFC and ST programming methods7. Internal relays8. Jump and call9. Timers10. Counters11. Shift registers12. Data handling13. Designing systems14. Programs
