Programmable Logic Controllers Principles And Applications By John W Webb.pdf 'link' Jun 2026

Webb’s book is the teach a person to fish of PLCs. It won’t get you a job programming a CompactLogix tomorrow, but it will stop you from being lost when someone says “scan cycle,” “retentive timer,” or “seal-in circuit.”

The text introduces the concept of closed-loop control, specifically PID (Proportional, Integral, Derivative) control. This is crucial for industries like chemical processing or water treatment where variables (temperature, pressure, flow) must be maintained at specific levels rather than just turned on or off. Webb’s book is the teach a person to fish of PLCs

– The book traces the evolution of PLCs from relay‑based systems to networked, microprocessor‑driven controllers. Understanding that progression helps engineers appreciate why modern PLCs work the way they do. – The book traces the evolution of PLCs

A: Webb is better for beginners and maintenance techs. Berger is better for advanced design engineers . Webb focuses on "why," while Berger focuses on "how in Siemens." Berger is better for advanced design engineers