Configure a periodic task

Use the
Configuration
 tab of the
Task Properties
 dialog box to edit task configuration parameters once the task is created.
To configure a periodic task:
  1. From the
    Type
     menu, choose the task type for the task.
  2. In
    Period
    , enter the rate for the task to execute.
    Reducing the rate value increases the frequency of the task’s execution, causing other tasks within the controller to execute more slowly.
  3. In
    Priority
    , enter the priority level for the task.
    Lower numbers indicate higher priorities for tasks. For example, a task that is assigned a priority of 1 is a higher priority task than one that is assigned a priority of 15
  4. In
    Watchdog
    , enter the value (in ms) for the watchdog timer.
    If a watchdog timer expires, a Major Controller Fault is generated. For Safety tasks, the Watchdog value must be less than or equal to the Task Period.
  5. (optional) To prevent the controller from executing this task when its trigger occurs, select
    Inhibit task
    .
  6. If you want to prevent the external output modules from being updated to the controller's data table values at the end of the task scan, select the
    Disable Automatic Output Processing to Reduce Task Overhead
     check box.
    This check box does not appear for Safety tasks.
  7. Select
    Synchronize Redundancy Data after Execution
    . By default, this option is turned on. When it is turned off for the parent task, the program setting is ignored.
    This check box does not appear for Safety tasks.
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