Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 70)

Publication 1794-UM001G-EN-P - January 2007
70 Develop Applications
Develop Programs The controller operating system is a preemptive multitasking system
that is IEC 1131-3 compliant. This environment provides:
• tasks to configure controller execution
• programs to group data and logic
• routines to encapsulate executable code written in a single
programming language
control application
controller fault handler
task 8
task 1
configuration
status
watchdog
program 32
program 1
main routine
fault routine
program (local)
tags
other routines
controller (global) tags I/O data system-shared data