Select how Simulink® software handles initialization of initial conditions for conditionally executed subsystems, Merge blocks, subsystem elapsed time, and Discrete-Time Integrator blocks.
Category: Diagnostics
Default:
Simplified
ClassicInitial conditions are initialized the same way they were prior to R2008b.
SimplifiedInitial conditions are initialized using the enhanced behavior, which can improve the consistency of simulation results.
Use Classic to ensure compatibility with
previous releases of Simulink.
Use Simplified to improve the consistency of
simulation results, especially for models that do not specify initial
conditions for conditional subsystem output ports, and for models that have
conditionally executed subsystem output ports connected to S-functions. For
more information, see Simplified Initialization Modeand Classic Initialization Mode.
For existing models, MathWorks® recommends using the Model Advisor to migrate your model to the new settings. To migrate your model to simplified initialization mode, run the following Model Advisor checks:
For more information, see Convert from Classic to Simplified Initialization Mode.
When using Simplified initialization
mode, you must set Bus signal treated as vector to error on the Connectivity Diagnostics
pane.
Selecting Classic enables the following
parameters:
Detect multiple driving blocks executing at the same time step
Check undefined subsystem initial output
Check runtime output of execution context
Selecting Simplified disables these parameters, and
automatically sets Detect multiple driving blocks executing at the same
time step to error.
Parameter:
UnderspecifiedInitializationDetection |
Value:
'Classic' | 'Simplified'
|
Default:
'Classic' |
| Application | Setting |
|---|---|
| Debugging | Simplified |
| Traceability | Simplified |
| Efficiency | Simplified |
| Safety precaution | Simplified |
Discrete-Time Integrator | Merge