The safety task, Safety task period specification – Rockwell Automation 1756-L7x GuardLogix 5570 Controllers User Manual

Page 80

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Rockwell Automation Publication 1756-UM022A-EN-P - November 2012

Chapter 6

Develop Safety Applications

The Safety Task

When you create a safety controller project, the Logix Designer application
automatically creates a safety task with a safety program and a main (safety)
routine.

Figure 22 - Safety Task in the Controller Organizer

Within the safety task, you can use multiple safety programs, composed of
multiple safety routines. The GuardLogix controller supports one safety task.
The safety task cannot be deleted.

You cannot schedule standard programs or execute standard routines within the
safety task.

Safety Task Period Specification

The safety task is a periodic timed task. You select the task priority and watchdog
time via the Task Properties - Safety Task dialog box. Open the dialog box by
right-clicking the Safety Task and choosing Properties.

Figure 23 - Configuring the Safety Task Period

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