Each chapter includes worked examples, diagrams that are easy to replicate, and end-of-chapter review questions. This pedagogical structure explains why many instructors choose Bolton’s text over denser volumes like Petruzella or Hugh Jack.

The 5th edition of "Programmable Logic Controllers" by W. Bolton is a comprehensive guide to PLCs, covering their hardware, programming, and applications. The PDF version of this book offers a convenient, searchable, and space-saving resource for students, engineers, and technicians seeking to understand and work with PLCs. Whether you are a seasoned professional or a newcomer to the field of industrial automation, this book provides a valuable resource for designing, implementing, and maintaining PLC-based control systems.

No book alone makes you a programmer. Combine Bolton’s theory with free simulators:

The book is structured into 14 chapters covering the lifecycle of PLC usage: Introduction : Programmable Logic Controllers. : Input/Output Devices and Digital Systems. Processing : I/O Processing and signal conditioning. Programming Basics : Ladder and Functional Block Programming. Advanced Methods : IL, SFC, and ST Programming. Control Elements