This version introduced the ability to design and configure custom sets of instructions. AOIs allow you to encapsulate common control algorithms (like a standard valve or motor block), reuse them throughout a project, and protect intellectual property with passwords.
The standout "helpful feature" introduced in RSLogix 5000 Version 16 Add-On Instruction (AOI)
: Programs are organized into tasks (Continuous, Periodic, or Event). Every program must have a MainRoutine to execute logic.