FMU block

[and5and7]

Hello,
I have only recently started using this library (which is great, by the way...!).
I am now playing with FMUs and wanted to try using them in PathView. However, I cannot find a block and I am guessing it is not available (yet?)... maybe something similar to 'FMPy GUI' where you can drag and drop an FMU, except here you could also connect it to sources, scopes and other blocks (similarly to Simulink).
Thank you for the help!

[cookesan]

PathView does not appear to ship a built-in FMU/FMPy block today.

The extension path is to expose it as a PathSim block/toolbox. PathView extracts block metadata from Python classes via Block.info() and can install/discover runtime toolboxes from PyPI, a wheel URL, or a .py file. The generated code then imports the block from that toolbox's import path.

So the practical route would be:

1. Write a small PathSim Block wrapper around the FMU/FMPy simulation step you need.
2. Make sure the class exposes usable Block.info() metadata.
3. Add it to PathView as a toolbox/custom block.

One caveat for the browser version: FMPy and many FMUs involve native binaries or compiled dependencies, which Pyodide generally cannot run. For those, the standalone pip install pathview app is the more realistic target.

[and5and7]

Thank you, I am going to give this a try!

[milanofthe]

Just like @cookesan says, with one caveat, pathsim has a ModelexchangeFMU and CosimulationFMU block in the core package. They are nit wired though for pathview because of the FMPy dependency. This is not an issue in the pypi version, I think it makes sense to expand the block set for the pypi version. Will do that in the coming days