Create S-function block of generated c-code

Hello,

I want to create a s-function block of generated c-code. The aim of this s-function block is to test the generated c-code on model base. I have created a s-functin.c file with the 3 commands:

set_param( modelName, 'GenerateErtSFunction', 'on' );

set_param( modelName, 'GenCodeOnly', 'off' );

rtwbuild( modelName );

My problem is now, that I don't know how I can create a Simulink S-function block of the generated C-Code. I tried to use the s-function block of the library but than I got only one input and one output of the block. How can I add/configure the other outputs? Because my model has 3 inputs and 2 outputs.

Thank you in advance.

[Kaustubha Govind]

Did the rtwbuild command generate a MEX-file in the current directory (usually, it has the name modelname_sf)?