Simulink Mask Port Visibility

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Fabian David Chico Moreno
Fabian David Chico Moreno on 20 Nov 2020
Answered: Katherine May on 20 Apr 2022
Hello!
I have a masked simulink block which has 3 models with different level of fidelity.
I would like to add a check box that when selected turns on/off the visibility of certain ports that are/are not required in the block depending of the user selection.
I see that in some blocks such as the battery one in the figure. This functionality is already added. The port Ta is activated or deactived as a function of the check box.
Does anyone know who to do this?
Thanks in advance.

Answers (3)

Nikhil Sonavane
Nikhil Sonavane on 27 Nov 2020
You may refer to this link for more details.

Arthur Reis
Arthur Reis on 23 Mar 2022
Perhaps using an enabled subsystem?

Katherine May
Katherine May on 20 Apr 2022
If you're running a custom S-function using a MEXed C-file, you can add the checkbox value to the S-function parameters to send it through to your C file, then selectively enable only the number of ports that you need. Also make sure that accompanying TLC files & port labels will set/grab the correct values from the correct ports.
Like this:
static void mdlInitializeSizes(SimStruct *S) {
boolean usePort = mxGetScalar(ssGetSFcnParam(S, INDEX_USE_PORT)) == 1;
[...]
if(usePort){
ssSetNumInputPorts(S, 1);
ssSetNumOutputPorts(S, 1);
} else {
ssSetNumInputPorts(S, 0);
ssSetNumOutputPorts(S, 0);
}
}
I'm still investigating a solution for when the controlling block is a subsystem containing S-function blocks.

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