How can I resolve this error ?

While simulating model in Simulink I got error as "External input specified in the Configuration Parameters dialog box on the Data Import/Export page (or as an option to SIM command) to a model containing no root level input ports"

Answer 1

[Fangjun Jiang]

You specified input data, but there is no root level input ports, which means no input data is needed.

If you've done this manually or inadvertently, press Ctrl+E, select "Data Import/Export" on the left, un-check "Input" on the right.

[Abhijeet Anand]

Thank You

[Param]

What should I do if I actually need input data for my Simulink model from the base workspace, and I'm still receiving the same error?

Basically, I'm generating a cosine wave (u) in MATLAB, using a Time vector (tout) that was generated by a simulink model (model_A, say). I want to send this cosine wave to another Simulink model (model_B, say) for further processing.

Here's my MATLAB script:

% tout is a variable generated in the same workspace, from simulink model_A
u=cos(tout);
sim('model_B');

Command Widow Error:

External input specified in the Configuration Parameters dialog box on the Data Import/Export page (or

as an option to SIM command) to a model containing no root level input ports

Thanks.

[Fangjun Jiang]

In this case, you need to have a root level Inport block. Then in model Configuration Parameters, Data Import/Export, check Input, [tout,u].

This is as if you are connecting the base workspace data [tout, u] to the root level Inport block.

Another way is to use a "From Workspace" block in the model and specify the data as [tout, u]. Then you don't need the Inport block.

[Param]

Thanks for the response @Fangjun Jiang.

I was actually using the "From Workspace" block since the beginning and had infact put the same input configurations [tout, u]. I had also specified the same in the "Data Import/Export page" of the model configurations, still I was getting the error.

However, I tried using the inport block, and it worked just fine.

Thanks a lot for your help.

[madhan ravi]

+1