You should be able to use a combination of instructions in the following two documentation sections to write a script that generates S-functions for you.
The high level idea is to
- set the System Target as 'rtwsfcn.tlc',
- make sure "Create new model" is selected, and
- use the subsystem handle to call the 'rtwbuild' function like
>> new_block = rtwbuild(subsystem_handle)
The 'rtwbuild' function will return the handle to the newly created S-function block, which you should be able to use to perform the intended operations on the new block (like replacing the sub-system with it or saving the block in a new model).
