Rockwell-automation GMLC Reference Manual Manual de usuario descargar pdf (Pagina 376)

100

101

Publication GMLC-5.2 - November 1999

End Program 339

When using this technique, it is important that task 0 (the main task) be

the last task resumed. Once task 0 is resumed, the When End or Fault

sequence is aborted and any blocks following a Resume Task 0 block are

not executed.

As with any Task Control block, with Resume Task selected, each task

continues from where it was interrupted when the fault occurred. Do not

use Task Control blocks, with Start New Task selected, to start or restart

tasks in the fault handler.

If a global or runtime fault is still active when a Task Control block with

Resume Task selected executes, the task dispatcher does not restart and

the task does not resume—the fault handler is immediately called again

via the End Program block with When End or Fault selected. This ensures

that all faults are cleared before any task resumes. The connection from

the Resume Task 0 block to the

block of the diagram never

executes, but is required to avoid a translation error due to an

unconnected output node on the task control block, with resume task

selected, when the diagram is translated to a script.

ATTENTION:

Blocks following a Resume Task 0

block, in the When End or Fault sequence, are not

executed.

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