Initialize, Reset, and Terminate Function Limitations

Unsupported Blocks

Initialize Function, Reset Function, and Terminate Function blocks do not support:

• Model blocks

• Custom code blocks

• Stateflow^® charts

• Resettable Subsystem blocks

• Blocks with state, for example, Unit Delay blocks

• Blocks with absolute time, for example, Clock blocks

• MATLAB System blocks

• MATLAB Function blocks which use persistent or global data. However, MATLAB Function blocks without persistent or global data are supported.

Initialize Function, Reset Function, and Terminate Function blocks cannot call Simulink Function blocks with:

• Input or output ports

• An Initialize Function, Reset Function, or Terminate Function block

• Unsupported blocks

Unsupported Features

Initialize Function, Reset Function, and Terminate Function blocks do not support:

• Using variable-size signals

Component I/O Blocks

The input ports of a model component containing Initialize Function or Reset Function blocks must connect to root Inport blocks without intervening blocks, and the output ports of a model component containing Reset Function or Terminate Function blocks must connect to root Outport blocks without intervening blocks.

If a model containing an Initialize Function, Reset Function, or Terminate Function block is an export-function model, the signal from the root Inport must not be branched to a Simulink Function block. If the model is not an export-function model, the signal from the root Inport must not be branched to any other block.

In this example, an Initialize Function block is placed in a Subsystem block. The model containing the Subsystem block is referenced from a model that is referenced from the root level model. Only the top-level model with the Show model initialize port parameter selected can have blocks between the input and output ports.