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How to Export a FMU as C# ( Csharp ) ?

#7014  Permalink Top

How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 11:40:29

Hi,

iam new in this community and want to learn to work with modelica. My first project idea was to connect a robot model with my Robot in Solidworks, to simulate the Robot while turning in my motion study in Solidworks.

Therefor i need to export the Modelica-Model in C#. I saw its possible to export as C-Code, but when i change the target language i get this error:

------------------------------------------------------------------------------------------------------

[27] 13:18:18 Übersetzung Fehler
Interner Fehler Unknown FMU template target: CSharp

[28] 13:18:18 Übersetzung Fehler
Interner Fehler SimCode: The model testrob could not be translated to FMU

------------------------------------------------------------------------------------------------------


What setting do i need to export the FMU as CSharp?




The next question is, how can i work with the exported model-Code. I saw the Exporter exports a "main.c" file, but i didnt got how i can start the model and get any output?!

Does any one of you exported a Model and used it in a code? Maybe i start a 2. thread but i first need the Csharp files to test it with my Solidworks-Addin.


Best regards,
Simon Fritz

Edited by: Fritz - Jun-14-16 11:42:46
#7015  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 12:07:19

FMI is a binary format specifying C linkage. So all FMUs regardless of language used will import in the way (unless you use source-code FMUs which we do not do for C#; we also do not do FMI export using C#). My guess is that you just need an FMI master written in C# and load the FMU from that at run-time.

#7016  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 12:12:30

thx for your quick reply!

Could you help me get started by coding a FMI master? I started working with modelica this week so i have no clue how to do this current/big_smile Or do you know a good tutorial how to code a FMI master?

Thx!

Simon

#7017  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 12:14:32

Go to fmi-standard.org and read the documentation very carefully. That + Google weird errors importing dll's should tell you everything you need to know.

#7018  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 12:17:18

ok ill try! Thx!

#7019  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 13:03:10

do you know any code examples? Maybe in C or C++? Would help me a lot, cause the documentation doesnt gives a quick introduction in coding a FMI master^^

#7020  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 13:05:32

Try the FMU SDK or FMI Library: https://fmi-standard.org/downloads

#7021  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-14-16 15:00:26

-

Edited by: Fritz - Jun-21-16 07:11:42
#7048  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 07:11:26

I found a easier solution for my problem. I use the ".exe" file to simulate. I just have the problem that i didnt found a way to read the results from the ".mat" file with C#.

I found this library but its only for Matlab 5 Files... and it doesnt work for the modelica results (Matlab 4)

http://www.mathworks.com/matlabcentral/ … or-net-2-0


Does anyone has a idea to read the result files without matlab in C#?

#7049  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 07:18:57

The mat4 format is very simple, the reader is quite short: https://github.com/OpenModelica/OMCompi … _matlab4.c

#7050  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 08:00:15

Hm... ok if there is no C# version ill try to translate it ^^

Thanks a lot!! current/smile

Edited by: Fritz - Jun-21-16 08:00:33
#7052  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 11:42:49

hm... ok not that easy but ill get help tomorrow of a friend of mine, he knows c++.

Edited by: Fritz - Jun-21-16 11:46:35
#7053  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 12:01:49

Efficiency reasons. Reading mat-files is easier than parsing csv, I promise. But yes, you can change output format to csv. Just specify -r outfile.csv when calling the simulation executable or choose csv from OMEdit or call https://openmodelica.org/doc/OpenModeli … ionresults to convert from mat to csv.

#7054  Permalink Top

Re: How to Export a FMU as C# ( Csharp ) ?

Jun-21-16 14:19:49

Ok i think ill go for the .csv Version. My Software is just a prototype so it must not be very efficient it just has to work^^

Thank you a lot current/smile

Edited by: Fritz - Jun-21-16 14:21:12
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