SimpleBuildingModel tutorial compilation errors in JModelica

[Ja98]

I have followed the tutorial in the UserGuide for the SimpleBuildingModel. The model seems to run fine in Dymola but I get the following errors when compiling in JModelica:

Error at line 25, column 41, in file 'C:\BuildingSystems\Buildings\Airpathes\AirpathPrescribedMassFlowRate.mo':
  Can not access non-function class through component access: 'airpathPort_1.Medium.T_default'

Error at line 264, column 13, in file 'C:\BuildingSystems\Buildings\Ambient.mo':
  Connecting to an instance of a non-connector type is not allowed

Any suggestions on why this is happening and what can be done to resolve it?

[thorade]

For the first error, do you get any further if you set T=300 for now?

The second error could possibly be fixed by changing line 264 to phi = phi_in instead of the connect statement. The connect statement seems to be illegal, but Dymola accepts such things :-( To get more hints, also check that single model in Dymola, and also check it in pedantic mode. The same variable was mentioned in #111 so probably that code should be made more standard-compliant.

[Ja98]

Thanks, it seems these variable are buried somewhere deep in the model: is it possible to change the value of AirpathPrescribedMassFlowRate.T and Ambient.phi in the example script without editing the library file?

[thorade]

You would have to edit the library file, but the error message tells you the file and line. You might want to start using git to track what you changed & when, and be able to reset to a previous state.

[Ja98]

Yes I use Git with the official package so I can keep track of updates but I wouldn't want to disrupt the main BuildingSystems package with my changes. I guess the next best thing would be to export a copy of only the required elements and dependencies into a new package that could then be referenced, rather than the BuildingSystems Library? Do you know if this is possible?

The pedantic check in Dymola does not indicate any additional warnings - does the check need to be done with simulation?

The first correction you suggested worked but the replacement of connect(phi, phi_in) with phi = phi_in results in:

Error at line 103, column 48, in file 'C:\Local Modelica Libraries\BuildingSystems\BuildingSystems\Buildings\Ambient.mo':
  The component phi_in is conditional: Access of conditional components is only valid in connect statements

Error at line 264, column 11, in file 'C:\Local Modelica Libraries\BuildingSystems\BuildingSystems\Buildings\Ambient.mo':
  The component phi_in is conditional: Access of conditional components is only valid in connect statements

I noticed that phi is defined also on line 103. Deletion of the entire conditional argument on line 264 results in the following error:

Error at line 103, column 48, in file 'C:\Local Modelica Libraries\BuildingSystems\BuildingSystems\Buildings\Ambient.mo':
  The component phi_in is conditional: Access of conditional components is only valid in connect statements

[thorade]

OK, maybe replace

// Select source for relative humidity of the ambient air
  if phiSou == BuildingSystems.Buildings.Types.DataSource.Parameter then
    phi = phi_constant;
  elseif phiSou == BuildingSystems.Buildings.Types.DataSource.File then
    phi = weatherData.y[6];
  else
    connect(phi, phi_in);
end if;

with

// Select source for relative humidity of the ambient air
    phi = if (phiSou == BuildingSystems.Buildings.Types.DataSource.Parameter) then phi_constant
      elseif (phiSou == BuildingSystems.Buildings.Types.DataSource.File) then weatherData.y[6]
      else phi_in;

or does that still give the error wrt conditional components!?

https://github.com/xogeny/ModelicaBook/issues/338

Regarding the git workflow: You should click the "Fork" button, then you have a copy where you can do whatever you want. You can have multiple remotes. When you do changes, always create a branch first. Do not work in the master branch, because that branch will change and then you get merge conflicts.

[thorade]

phi is instantiated in line 103, in line 212 the equation section starts, in line 264 phi is assigned a value.

[Ja98]

Thanks very much for the git tips! Yes, unfortunately even when I replace that script, I am still getting the error:

Error at line 261, column 12, in file 'C:\Local Modelica Libraries\Forked\BuildingSystems Forked\BuildingSystems\Buildings\Ambient.mo':
  The component phi_in is conditional: Access of conditional components is only valid in connect statements