Updated to reflect recent industry developments, this edition features practical information on Rockwell Automation?s SLC 500 family of PLCs and includes a no-nonsense introduction to RSLogix software and the new ControlLogix PLC. To assist readers in understanding key concepts, the art program has been modernized to include improved illustrations, current manufacturer-specific photos, and actual RSLogix software screens to visibly illustrate essential principles of PLC operation. New material has been added on ControlNet and DeviceNet, and a new chapter on program flow instructions includes updated references to the SLC 500, MicroLogix, and the PLC 5.

Table of Contents:
1. Welcome to the World of Programmable Logic Controllers 2. Micro Programmable Logic Controllers 3. Programming a Programmable Controller 4. Number Systems 5. Introduction to PLC Operation 6. Introduction to Logic 7. Input Modules 8. Output Modules 9. Putting Together a Modular PLC 10. PLC Processors 11. Introduction to ControlNet and DeviceNet 12. Processor Data Organization 13. The Basic Relay Instructions 14. Understanding Relay Instructions and the Programmable Controller Input Modules 15.Documenting Your PLC System 16. Timer and Counter Instructions 17. Comparison and Data-Handling Instructions 18. Sequencer Instructions 19. Program Flow Instructions