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Tiziano, Unfortunately, I do not know the answer to your question. However, when compiling a Type in an external DLL, you need to provide the compiler with a definition of all the external functions that you will be using. In your case, the TRNSYS kernel function getSimulationStartTime() needs to be defined somewhere. With the CVF compiler, it was necessary to add the file TRNDll.lib to the project when compiling as that library file contained the definition of all the TRNDLL kernel functions that Types could use. In the IVF compiler, there are compiler settings that allow you to specify where the compiler should go looking for "module files" such as TrnsysFunctions.mod. These also contain definitions of the external procedures that your Type will need. Kind regards, david On 4/23/2012 03:40, Tiziano Terlizzese wrote: Dear all, I'm trying to create a new type, a water tank, using g95 as compiler. Running my script into g95 (the script is in attachment) the only error I get now is "undefined reference to `trnsysfunctions_MP_getsimulationstarttime'”. Any suggestion? Thanks, Tiziano Università di Bologna Dipartimento di Ingegneria Energetica Nucleare e del Controllo Ambientale - DIENCA Via del Risorgimento, 2 - 40136 Bologna - Italia ________________________________________ Inizio: jeannieboef [jeannieboef@googlemail.com] Inviato: venerdì 30 marzo 2012 18.24 Fine: David BRADLEY Cc: Tiziano Terlizzese; trnsys-users@cae.wisc.edu Oggetto: Re: [TRNSYS-users] Create a new type Beware! I'm currently trying with g95. As a start the guidelines are good, but I have found a few problems that are not mentioned there. Find the gg95 google group. search for DMOD to find my conversation. I have also posted to this group, but I'm having a bouncing problem atm. Since that guild has been written there have been updates to the constants, data, and functions modules which should be included in your type code. I would take the source code for these and adjust and compile them one by one until they compile without error. As I've said, my type compiles fine and runs, but is not working properly. I suspect the problem is with the old !DEC$ attributes dllexport::... statement which is ignored as a comment by g95. The gcc 4.x.x directive has suggested !gcc$ as an easy replace for !DEC$, which works a little better, but I'm still having problems. The type subroutine and some functions are missing an entry point pointer and information gets lost. I've not solved this issue yet and am a bit out of my depth here. I think a basic input output function will work fine without the pointers. Let me know if anyone has working compiled by g95 source code to share. I'll post mine when and if it ever works. goodluck Sent from my iPhone On 30.03.2012, at 17:19, David BRADLEY <d.bradley@tess-inc.com> wrote:Tiziano, I am not entirely sure that I understand your question. Fortran 90 is a language while Compaq Visual Fortran is a compiler. Most Types in Trnsys16 were written Fortran77 language conventions but some where written using Fortran90 conventions; the two language conventions should be able to interact with each other without problems. Whichever set of language conventions you choose, you need some kind of compiler that can create a DLL containing the source code for your Type. Some users have succeeded in using the free G95 compiler to make user Types. There is a tutorial available at: http://sel.me.wisc.edu/trnsys/downloads/tutorials_and_examples/tutex17.htm . While the tutorial is written based on Trnsys17, most of it applies to Trnsys16 as well. Kind regards, David On 3/30/2012 04:14, Tiziano Terlizzese wrote:Dear trnsys users, I need to create a new type, a rain water tank. It seems that the only way to create a new type is to have at disposal COMPAQ Visual Fortran. Is that correct? Can't you use FORTRAN 90 instead of compaq visual fortran? The problem I faced in using fortran 90 is that transys constants are not already implemented into it. Is there a way out that won't imply to buy Compaq Visual Fortran? I have TRNSYS 16 version. Thank you in advance for your help. Greetings, Tiziano Terlizzese Università di Bologna Dipartimento di Ingegneria Energetica Nucleare e del Controllo Ambientale - DIENCA Via del Risorgimento, 2 - 40136 Bologna - Italia _______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-users-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com _______________________________________________ TRNSYS-users mailing list TRNSYS-users@cae.wisc.edu https://mailman.cae.wisc.edu/listinfo/trnsys-users -- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |