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<TITLE>Matlab/Simulink coupled with TRNSYS - Can run simulation only once per Matlab start</TITLE>
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<P><FONT SIZE=2 FACE="Arial">Hello all,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I am using Trnsys module as a part of my Simulink model. It has all been working fine, apart from one thing - if I run simulation once (and it finishes, or I interrupt it), prior to running it again, I have to close and reopen Matlab, otherwise I get the following error message (exception):</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Error in 'efhb1_radiators_mixed_unmixed/Gebäude/coupling/TRNSYS1' while executing M-File S-function 'trn_sfun', flag = 0 (initialize), at start of simulation. MATLAB error message:</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Unknown Windows exception value=c000008c in MATLAB.</FONT>
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<P><FONT SIZE=2 FACE="Arial">I stepped through the Fortran code, and located the exception in the RCHECK.FOR, when the following is executed (as KKOUT has silly value): </FONT></P>
<P><FONT SIZE=2 FACE="Arial">C DETERMINE OUTPUT VARIABLE TYPE </FONT>
<BR><FONT SIZE=2 FACE="Arial"> <B> </B></FONT><B><FONT COLOR="#FF0000" SIZE=2 FACE="Arial">ATMP1 = OCHECK(KKOUT)</FONT></B>
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<P><FONT SIZE=2 FACE="Arial">Of course, on first run, it goes without error. </FONT>
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<P><FONT SIZE=2 FACE="Arial">Trnsys .OUT file reports no error.</FONT>
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<P><FONT SIZE=2 FACE="Arial">Anyone having similar problems or ideas of what might be going wrong?</FONT>
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<P><FONT SIZE=2 FACE="Arial">Thanks,</FONT>
<BR><FONT SIZE=2 FACE="Arial">Nikola</FONT>
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