[TRNSYS-users] ddl or api for trnsys.exe

David BRADLEY d.bradley at tess-inc.com
Fri Jul 3 10:37:08 PDT 2020


Maurice,

   As soon as you call the TRNExe64.exe, it calls the TRNDll64.dll so I 
don't think that the communication is going to get any faster since 
Trnsys is already a dll. The *.exe part of TRNSYS is mostly occupied 
with the online plotter so if you get rid of all the Type65s in your 
simulation it will run a bit faster. However, if you have already used 
the /h switch then that is about as fast as it is going to get.

kind regards,

  David



On 07/03/2020 11:20, Maurice Charbit - OZE-ENERGIES wrote:
> David
>
> What you advise is what I did:
>     arg1       = directory where TRNSYS.exe is
>     arg2                   = name of the DCK file
>     arg3                   = "/h" (to avoid that window open the 
> interface)
>     exe_trnsys        = subprocess.call([arg1,arg2,arg3])
>
> but it is very slow. A better way will be to have a .dll
>
> best regards
>
> ------------------------------------------------------------------------
> *De :* David BRADLEY <d.bradley at tess-inc.com>
> *Envoyé :* vendredi 3 juillet 2020 17:39
> *À :* TRNSYS users mailing list at OneBuilding.org 
> <trnsys-users at lists.onebuilding.org>
> *Cc :* Maurice Charbit - OZE-ENERGIES <mch at oze-energies.com>
> *Objet :* Re: [TRNSYS-users] ddl or api for trnsys.exe
>
> Maurice,
>
>  I have not used Python, however, TRNSYS can be called from the 
> command line so I assume it would be able to be called from Python as 
> well. The command line to run one of the TRNSYS examples is:
>
> c:\Trnsys18\Exe\TRNExe64.exe 
> "c:\Trnsys18\Examples\Calling_Contam\CombinedThermalAirflow_AHU.dck"
>
>
> if you add a /n at the end of the line then there will be no need to 
> click "ok" when the run completes.
>
> if you add a /h at the end of the line then TRNSYS will run entirely 
> in the background.
>
>
> kind regards,
>
>  David
>
>
>
> On 07/03/2020 09:45, Maurice Charbit - OZE-ENERGIES via TRNSYS-users 
> wrote:
>> Hi,
>>
>> I am using TRNSYS for industrial development. For this purposes  I 
>> develop a program in Python language which calsl TRNSYS.exe via 
>> subprocess function. It takes a lot of time because it means running 
>> via Windows.
>>
>> Does it exist  a code (something like an API or a DLL) which can be 
>> called directly from Python ?
>>
>> Best regards
>>
>>
>> Maurice
>>
>> tel: +33 (0)6 52 30 11 71
>>
>>
>> _______________________________________________
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>> TRNSYS-users at lists.onebuilding.org  <mailto:TRNSYS-users at lists.onebuilding.org>
>> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
> -- 
> ***************************
> David BRADLEY
> Principal
> Thermal Energy Systems Specialists, LLC
> 3 North Pinckney Street - suite 202
> Madison, WI  53703 USA
>
> P:+1.608.274.2577
> F:+1.608.278.1475
> d.bradley at tess-inc.com  <mailto:d.bradley at tess-inc.com>
>
> http://www.tess-inc.com
> http://www.trnsys.com

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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