Now in four-color, this outstanding text for the first course in programmable logic controllers (PLCs) focuses on how PLCs work and gives students practical information about installing, programming, and maintaining PLC systems. It's not intended to replace manufacturer's or user's manuals, but rather complements and expands on the information contained in these materials. All topics are covered in small segments. Students systematically carry out a wide range of generic programming exercises and assignments. All of the information about PLCs has been updated.

Table of Contents

1 Programmable Logic Controls (PLCs): An Overview
2 PLC Hardware Components
3 Number Systems and Codes
4 Fundamentals of Logic
5 Basics of PLC Programming
6 Fundamental PLC Wiring Diagrams and Ladder Logic Programs
7 Programming Timers
8 Programming Counters
9 Program Control Instructions
10 Data Manipulation Instructions
11 Math Instructions
12 Sequencer and Shift Register Instructions
13 PLC Installation Practices, Editing, and Troubleshooting
14 Process Control and Data Acquisition Systems
15 Computer-Controlled Machines and Processes