PLC Programming Using RSLogix 500: Advanced Programming Concepts is the 2nd book of the PLC programming series. It provides; together with other books in the series, a guided approach in developing the skills necessary for programming the PLC control systems used in industrial and manufacturing environments. The main objective for this series of books is to provide a practical resource for those who are relatively new to PLC controls and want to learn ladder logic programming. It will aid technicians in troubleshooting existing program applications, and serve as a valuable reference guide as you develop your own projects.