Multitask conditionally executed subsystem

Diagnostic action to take when a subsystem might cause data corruption or non-deterministic behavior

Model Configuration Pane: Diagnostics / Sample Time

Description

The Multitask conditionally executed subsystem parameter specifies the diagnostic action to take if Simulink^® software detects a subsystem that may cause data corruption or non-deterministic behavior.

Settings

error (default) | none | warning

none

Simulink software takes no action.

warning

Simulink software displays a warning.

error

Simulink software terminates the simulation and displays an error message.

Tips

• These types of subsystems can be caused by either of the following conditions:

  • Your model uses multitasking solver mode and it contains an enabled subsystem that operates at multiple rates.

  • Your model contains a conditionally executed subsystem that can reset its states and that contains an asynchronous subsystem.

  These types of subsystems can cause corrupted data or nondeterministic behavior in a real-time system that uses code generated from the model.

• For models that use multitasking solver mode and contain an enabled subsystem that operates at multiple rates, consider using single-tasking solver mode or using a single-rate enabled subsystem instead.

• For models that contain a conditionally executed subsystem that can reset its states and that contains an asynchronous subsystem, consider moving the asynchronous subsystem outside the conditionally executed subsystem.

Recommended Settings

Application	Setting
Debugging	No impact
Traceability	No impact
Efficiency	No impact
Safety precaution	error

Programmatic Use

Parameter: MultiTaskCondExecSysMsg

Value: "none" | "warning" | "error"

Default: "error"

Version History

Introduced in R2006a