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Hello community,
I'm facing a problem linking a Matlab file with Trnsys 18. After validation that the code is correct, I tried to link it with TRNSYS using these instructions:
% Read input data from file
Tambs = trnInputs(1);
vext = trnInputs(2);
G1 = trnInputs(3);
RHamb = trnInputs(4);
% --- Set outputs ---
trnOutputs(1) = X;
trnOutputs(2) = Ta;
trnOutputs(3) = Tb;
but it keeps giving me an error related to mFileErrorCode (Message : The M-File has flagged an error. Returned value for 'mFileErrorCode': 130.0000000000000 . The error occurred at info(7) = 0 , info(13) = 0)
I don't know how I should set and use this mFileErrorCode. Can you please give me tips or instructions i can use to solve this issue and thank you so much.
It is a bit unclear to me when the error is occurring. Do you get this error as soon as you launch the coupled simulation? If so then I would recommend looking at the Type155 documentation; it contains the entire knowledge base including some troubleshooting tips as concerns the connection between TRNSYS and Matlab.
If the error is getting thrown at some point during the simulation (such that you know that the problem is not in the communication between TRNSYS and Matlab but in the computations) then I would suggest trying to add some code to your m-file that creates its own output file where it can write the values of key variables as it receives them from Trnsys and as it carries out its calculations. There may be a division by zero or some other unexpected math error hiding somewhere.
kind regards,
David
salwa Topic starter
10/01/2024 11:52 am
@davidbradley
Thank you so much for your reply. I checked the Type155 documentation as you suggested, and I followed the instructions to add it to my code. And after I run the simulation, here is what appears:
DavidBradley 15/01/2024 2:59 pm
@salwa
When we compile Type155, we have to link it to four *.lib files. The *.lib file that is referenced in your screen capture (libmx.dll) is one of those libraries. Unfortunately an "access violation" is a very generic message that doesn't really give much useful information. It may be a silly question but are you sure that the version of Type155.dll you are running corresponds to the version of Matlab that you are running?
