Publication 1756-UM001G-EN-P - January 2007
68 Develop Applications
DevelopPrograms
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.
Program Development Overview
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
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