Simulink Error Message Inquiry

I'm not getting error messages relative to a new integration problem that I've mapped into Simulink. Its telling me the following when I run it:

Simulation 8 3

10:54 AM Elapsed: 2 sec

Output port 1 of 'SimIntegrator/Cpsi2' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/P' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/Q1' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/R2' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/Spsi2' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/U' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/V1' is not connected.

Component:Simulink | Category:Block warning

Output port 1 of 'SimIntegrator/W2' is not connected.

Component:Simulink | Category:Block warning

Error evaluating 'StartFcn' callback of MultiPlot Graph block (mask) 'SimIntegrator/Output Graph3'.

Callback string is 'sfun_multiplot([],[],[],'Start')'

Caused by:

There should be a single port of width NU.

Component:Simulink | Category:Block error

Error evaluating 'StartFcn' callback of MultiPlot Graph block (mask) 'SimIntegrator/Output Graph4'.

Callback string is 'sfun_multiplot([],[],[],'Start')'

Caused by:

There should be a single port of width NU.

Component:Simulink | Category:Block error

Error evaluating 'StartFcn' callback of MultiPlot Graph block (mask) 'SimIntegrator/Output Graph5'.

Callback string is 'sfun_multiplot([],[],[],'Start')'

Caused by:

There should be a single port of width NU.

Component:Simulink | Category:Block error

I understand the reason for the warnings, but I don't grasp the basis for the errors. Does anyone else? ("There should be a single port of width NU?") Please respond if you do. Thank you.

I've attached the file.

Answer 1

[Yukthi S]

Hi @DJ V

I've been able to reproduce the error at my side. It seems that the issue might be due to a bug in the callback function code.

I noticed that some constant blocks in the Simulink model had the "Interpret vector parameters as 1-D" option unchecked. After enabling this option for all the Constant blocks, the error was resolved. This might be a possible workaround for the issue.