MATLAB: How to switch between Model Reference and Subsystems in the model for debugging

referencingsimulinktemplate

When I model my system using Model Reference blocks, it is difficult to debug problems with Model Reference blocks because there is no way to look into the execution of the block like there is in Normal mode.

Also, if I make small changes to my referenced model, I need to rebuild my model each time, which is time consuming and a lot slower than tuning parameters and editing Subsystems.

Is there a way I can switch back and forth between Model Reference and Subsystems?

Best Answer

The attached example in config.zip has a library (called "Config_lib.mdl") that contains a Configurable Subsystem that allows switching between a subsystem implementation and a subsystem wrapped around a Model Reference block (which in turn uses the Subsystem block as its algorithm).

The other files contained in the ZIP-file are:

mtop.mdl - the top level model

Mconfig1.mdl - a referenced model

The Configurable Subsystem in the "Config_lib" library is masked to eliminate the need for two masks. The single source for the algorithm is the Subsystem in the library. The Configurable Subsystem allows for easy switching between a Model Reference implementation and a Subsystem implementation.

Related Solutions

MATLAB: Am I receiving an error related to “OutputPortOutputBusAsStructs” when using model reference and virtual buses

Root-cause of the error:

This error is thrown due to a combination of the following two factors:

1. There is a mismatch between the reference model outport and the reference block in the top model:

The top model is expecting a nonvirtual bus.
But the reference model checkbox is not selected to" output as nonvirtual bus in parent model":

2. Plus, "Ports and parameters mismatch" is set to "error" in Diagnostics > Model referencing in the configuration parameters.

How to fix this error:

If you want to output a nonvirtual bus from the reference model, you can check the option "output a nonvirtual bus in parent model" in the outport inside the reference model (see image above), and the error will be fixed.
If you want a virtual bus, you will need to update the reference model block from the top model, so that the configuration is updated based on the referenced model:

If the "Ports and parameters mismatch" diagnostic were set to "none", the model reference block is automatically updated. Because it is set to "error" here, you will need to update it manually.

MATLAB: Is it possible to add a “configurable subsystem” in a library using add_block command

Hi,

here is a piece of code I use :

function test_add()
model = bdroot(gcb);
config_subsystem = strcat(model, '/config_subsystem');
add_block('configurable_subsystem/template',config_subsystem,...
    'Position', [480, 104, 580, 146]);
set_param(config_subsystem,'MemberBlocks', 'config_1, config_2, config_3');
set_param(config_subsystem,'BlockChoice', 'config_1');
end

I put a configurable subsystem named "template" in a library named "configurable_subsystem.mdl". "template" block is not configured.

I can add it to my library (it contains 3 subsystems named "config_1", "config_2", "config_3") but I can not configure it.

error message is :

??? Error using ==> set_param Cannot set member block list for configurable subsystem instance 'my_lib/config_subsystem'.

Error in ==> test_add at 10 set_param(config_subsystem,'MemberBlocks', 'config_1, config_2, config_3');

Thank you for help.

Best Answer

Related Solutions

MATLAB: Am I receiving an error related to “OutputPor​tOutputBus​AsStructs” when using model reference and virtual buses

MATLAB: Is it possible to add a “configurable subsystem” in a library using add_block command

Related Question

MATLAB: Am I receiving an error related to “OutputPortOutputBusAsStructs” when using model reference and virtual buses