Program Flow Instructions Using RS Logix 500 A practical guide for developing your knowledge of PLC "ladder logic" programming. Whether you work as a technician or as a design engineer, this guide will serve as a valuable resource and reference for concepts and specific instructions that control the scan cycle of the PLC processor. Topics included are: -Using the Jump To (JMP) and Label (LBL) instructions. -How to correctly use the Jump to Subroutine (JSR), Subroutine (SBR) and Return (RET) instructions in you program structure. -The Master Control Reset (MCR) instruction and its use. -The use of Temporary End (TND), and Suspend (SUS) instructions for debugging programs. -Doing immediate updates by using the IIM, IOM, and REF instructions. -Programming for different Interrupts: the STI, the DII, and I/O subroutines. -Developing good programming techniques. The main objectives of the author are to provide a practical resource for those new to PLC and ladder logic programming. Learn the skills necessary to do your own programming and be able to quickly go online with the PLC controllers on the factory floor for troubleshooting purposes. The author's career experience of 30+ years has been in industrial electronics and electrical power distribution, while his educational background is in technical education. Perhaps for these reasons, this book is written in the clear, concise and easy to understand language of someone who understands the work from the "shop floor" perspective of the technician.