Specify sample time behavior and tunability for S-function blocks with port-based sample times
MATLAB
SetAllowConstantSampleTime(s,flag)
s Instance of Simulink.MSFcnRunTimeBlock class
representing the Level-2 MATLAB S-Function block.
flag Logical value to allow a sample time of Inf for
ports in the S-function. The default is False.
Use this macro to specify sample time behavior for your S-function
with port-based sample times. If you set flag to False,
the Simulink engine does not allow a sample time of Inf for
this S-function. If you set flag to True,
the S-function block is tunable and its ports can have a sample time
of Inf. To set the sample time for ports in the
S-function, use SetInputPortSampleTime and SetOutputPortSampleTime. These ports
execute every time you tune any parameter in your model during simulation.