Professionals transitioning from hardwired relay logic to automated software control.
Decrements the accumulator value, often used in conjunction with CTU for monitoring parking garage capacity or inventory levels. Math and Data Manipulation
Covers PLC history, internal architecture, and initial setup.
The practical utility of PLCs spans across almost every manufacturing and utility sector. Webb illustrates these principles through standard industry case studies.
On-Delay (TON) and Off-Delay (TOF) timers used for sequencing events, such as delaying a motor start after an alarm sounds.
A fundamental principle highlighted in Webb’s book is the operational nature of the PLC, known as the . Unlike a standard personal computer that runs multiple tasks simultaneously, a PLC executes a sequential, continuous loop optimized for real-time responsiveness.
The book defines a PLC as an industrial computer designed for real-time control of electromechanical processes. Key principles include:
This rapid cycle ensures that the controller responds almost instantly to changes on the factory floor. 3. Ladder Logic Programming
It builds a rock-solid understanding of boolean logic and electrical fundamentals before diving into software.
A major strength of the book is its practical diagnostics:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
