Programmable Logic Controllers — Principles And Applications By John W Webb.pdf

| Edition | Year | Key Features & Updates | Publisher | | :--- | :--- | :--- | :--- | | | 1992 | First edition by John W. Webb alone; established the book's core structure and accessible teaching style. | Merrill, Maxwell Macmillan Canada | | 3rd Edition | 1995 | Expanded to remain current with industry practices. | Prentice Hall | | 4th Edition | 1999 | Introduced Ronald A. Reis as co-author. Reflected the latest manuals of eight major PLC manufacturers. Included expanded coverage of jump functions, stacking functions, PID programming, HMI, and newer control languages . | Prentice Hall / Pearson College Div | | 5th Edition | 2003 | The most recent edition under the Webb & Reis byline. Further updated for contemporary PLC applications. | Prentice-Hall of India / Prentice Hall PTR |

However, some criticisms have emerged. A reviewer on Amazon.in noted that the book feels “dated” and the exposition is “excruciatingly repetitive,” suggesting that newer editions of other PLC books might serve modern readers better. Other readers pointed out that while the book covers fundamentals thoroughly, it lacks advanced applications like integrating with different programming platforms and does not offer a methodology for designing sequential logic control circuits. | Edition | Year | Key Features &