fmi2ExitIn​itializati​onMode error

Hi all,

I am getting an 'fmi2ExitInitializationMode' error when simulating an imported FMU (which was generated in GT-ISE2024) in MATLAB 2024b .

Can anyone pls look into this and suggest some way to overcome this error!

[Adarsh]

Hi @Rajaram,

Once can you make sure there are no spaces in the path to the FMU and try simulating the FMU again. Some of the errors can be arised due to representation of " "(space) as "%20" by MATLAB.

Answer 1

[Maneet Kaur Bagga]

Hi,

As per my understanding from the log attached, the error occurs at "fmi2ExitInitializationMode", which suggests the issue with the transition from initialization to simulation. Please refer to the following as the possible workaround for the same :

The log shows "F_OilPumpSpeed = 0.0e+000" which can be a possible error as FMU expects a non zero value. Please refer to the following MathWorks documentation for the same.

https://www.mathworks.com/help/simulink/ref_extras/fmu.html

Also, the log shows the following error:

fmi2SetupExperiment: toleranceDefined=0 tolerance=0.001

For resolving the above in MATLAB, set a nonzero tolerance before running the FMU:

fmi2SetupExperiment(fmu, 'tolerance', 1e-4);

You can enable the Debug mode in MATLAB for better understanding the error. Also, try isolating the error occuring because of MATLAB to check if there is an error in FMU itself or the error is caused after running in MATLAB.

Hope this helps!

[Rajaram]

Hi Maneet,

Thanks a lot for your time and suggestions, will try these options

Answer 2

[Rajaram]

Hi all,

The error resolved when I generated a standalone FMU instead of GT-needed FMU and now it is running in simulink without any error.

[Larry]

The fmi2ExitInitializationMode error usually means the FMU failed during initialization. Check parameter settings, required inputs, and compatibility with MATLAB 2024b. Enable FMU logging for detailed errors, or test in other tools like FMPy or FMUChecker. Group projects took up most of my time this semester, and solo assignments kept piling up.