The MAST task can be configured in Freewheeling or Cyclic mode. The MAST task is automatically created by default in Cyclic mode. Its preset priority is medium (15), its preset interval is 20 ms, and its task watchdog service is activated with a time of 100 ms and a sensitivity of 1. Refer to Task Priorities for more information on priority settings. Refer to Task Watchdogs for more information on watchdogs.
Designing an efficient application program is important in systems approaching the maximum number of tasks. In such an application, it can be difficult to keep the resource utilization below the system watchdog threshold. If priority reassignments alone are not sufficient to remain below the threshold, some lower priority tasks can be made to use fewer system resources if the SysTaskWaitSleep function, contained in the SysTask library, is added to those tasks.
NOTE: Do not delete or change the name of the MAST task. Otherwise, EcoStruxure Machine Expert detects an error when you attempt to build the application, and you are not able to download it to the controller.
