Rockwell Automation 9323-PA1E QUICK START GUIDE APS 6.0 - Manual (Page 19)

Preface
APS Quick Start for New Users
2–2
SLC 500 File Concepts
The CPU, or processor, provides control through the use of a program you create.
The program you create is called a processor file. This file contains other files that
break your program down into more manageable sections. These sections are:
•
Program Files - provide storage and control of the main program and
subroutines.
•
Data Files - contains the status of inputs, outputs, the processor, timers,
counters, and so on.
Processor Files
Each CPU can hold 1 processor file at a time. The processor file is made up of
program files (up to 256 per controller) and data files (up to 256 per controller).
Processor File
Data Files Program Files
Processor files are created in the offline mode using APS. These files are then
restored, also referred to as downloaded, to the processor for online operation.