"Diagnostics & Troubleshooting" is the third installment of the series "PLC Programming – Using RSLogix 500" This book, together with, "Basic Programming Concepts" and "Advanced Programming Concepts", serves as an instructional guide for developing a practical and comprehensive knowledge of PLC ladder logic programming. The main objectives of this series are to provide step-by-step and guided approach for learning PLC ladder programming. In Diagnostics & Troubleshooting you will learn: The Processor status LED’s and their interpretation. Discussion of the "Status File" and its use in finding and correcting faults. Using the "Search" and "Data Monitoring" tools and functions. How to perform "online editing". How to understand and use "fault routine" ladder logic files. How to add "Symbols", "Descriptions" and "Comments" to your ladder logic program. Understanding the use of "forces" and how they are executed within the program scan. Importing and exporting a program database. Building a documentation database using the ".csv" format template. Building fault routines for "specific" faults. Developing good programming techniques.