Textbook in PDF format

Programmable Logic Controllers: Hardware and Programming provides an introduction to PLCs and their applications in process and industrial control systems. The text begins with basic hardware and programming concepts and then progresses to system-level applications. Many illustrations and examples found throughout the textbook are based on the LogixPro 500 PLC Simulator Software, which is developed by and available from The Learning Pit.
Programmable Logic Controller (PLC) Overview
PLC Selection, Components, and Communication
Number Systems and Codes
Input/Output Devices and Motor Controls
Creating Relay Logic Diagrams
PLC Programming
Programming Logic Gate Functions in PLCs
PLC Timer Instructions
PLC Counter Instructions
PLC Math Instructions
PLC Compare, Jump, and MCR Instructions
PLC Subroutine Functions
PLC Logic and Bit Shift Instructions
Data Handling Instructions
Sequencer Instructions
Troubleshooting and Servicing the PLC System
PLC Networks in Manufacturing
PLC Programming with RSLogix 5000 Software
Electromechanical Devices