Known for its comprehensive, clear introduction to programmable logic controllers (PLCs), the completely updated TECHNICIAN'S GUIDE TO PROGRAMMABLE CONTROLLERS, Seventh Edition, covers theory, hardware, instructions, programming, installation, startup and troubleshooting in a way that makes even complex material easy to understand and apply. The current edition includes all-new color figures, step-by-step programming information and practical examples using the latest software in the Allen-Bradley ControlLogix family of PLCs. Updated and expanded material covers topics such as array instructions, analog configuration, proportional integral derivative (PID) instructions and tuning and industrial communications, as well as an introduction to sequential function chart, function block and structured text programming. The latest PLC hardware, software and instructions are presented along with practical applications and examples throughout the text. Supplementary programming examples using the PLC instructions in the text give readers a better understanding of the various instructions and how they can be combined to create simple yet effective control logic solutions for today's world.