MATLAB: Do I receive the error “There is no block named…” when adding a MATLAB file (level-2) S-Function to a SIMULINK model using the function ADD_BLOCK

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I receive the following error when adding a MATLAB file (level-2) S-Function to a SIMULINK model using the function ADD_BLOCK:

 ??? Error using ==> add_block
 There is no block named 'simulink/User-Defined Functions/MATLAB file (level-2) S-Function'.

To reproduce this error, you can use the following code:

new_system('mySystem')
open_system('mySystem')
add_block('simulink/User-Defined Functions/MATLAB file (level-2) S-Function', 'mySystem/mySFunction')

To work around this issue, add the block as shown below:

add_block('built-in/M-S-Function', 'mySystem/test')

The following URL links to a description of how to add blocks to a model using the add_block function with the block's 'Blocktype' property.

This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, please read below for any possible workarounds:

The ability to copy S-function builder blocks without losing port information is not available in Simulink.

Currently to work around this issue, try the following:

1. Create an S-function builder block and completely build the required S-function.

2. Add another S-function block to the model and configure this block to have the same:

    a. name
    b. parameter list

as the S-function builder block. You may need to build a mask for the S-function parameters.

3. Now make copies of the new S-function.

add_block's output will be the handle of the newly added block. From this, the name of the newly inserted block can be found out.

eg;

blockHandle = add_block(gcb, gcb, 'MakeNameUnique', 'on');

get_param(blockHandle , 'Name')