Table of Contents
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Chapter 10
Develop Applications
Tasks
264
Figure 39 - Elements of a Control Program
Control Application
Controller Fault Handler
Controller Fault Handler
Task 32
Task 1
Program 1000
Program 1
Program (Local
Main Routine
Tags and
Parameters)
Fault Routine
Other
Routines
Controller (global)
Tags
A Logix5000™ controller lets you use multiple tasks to schedule and prioritize the
execution of your programs that are based on criteria. This multitasking allocates
the processing time of the controller among the different operations in your
application:
• The controller executes only one task at a time.
• One task can interrupt the execution of another task and take control.
• In any given task, multiple programs can be used. However, only one
program executes at a time.
• You can display tasks in the Controller or Logical Organizer views, as
necessary.
Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
Configuration
Status
Watchdog
I/O Data
System-shared Data
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