Importing a CODESYS project

[smari-thmi]

Are there any possibilities to fully import a project from CODESYS?

I tried importing an OpenPLC XML export from CODESYS, but that only seems to work to a certain extent. I also experimented with these Python scripts and had some partial success after modifying the script.

Would implementing a more complete import solution be valuable?

[johannesPettersson80]

I think that would be very valuable.
I’m planning to implement full PLCopen XML support for ST project structures, while explicitly excluding FBD/LD/SFC.
Thanks for the suggestion.

[smari-thmi]

@johannesPettersson80 The import function works much better now, closing functions and setting the return type.
It looks like there is a issue with global variables they seem to be getting left out. Tiny test with globals

[smari-thmi]

And also when importing the xml from codesys it does not put files in folders, but i am not sure of that is an PLCopen thing

[johannesPettersson80]

Thanks for the info and files, i will debug and hopefully i can find a solution.

[johannesPettersson80]

@smari-thmi
I did some fixes for the xml import/export. Please check it out when you have time.

[smari-thmi]

Importing works and seems to no longer give any errors on globals! Tried to export back to codesys but the format was not suitable for codesys, have you stress tested the lsp with a large code base?

[johannesPettersson80]

@smari-thmi Thanks for testing it. I am working on a fix, hopefully it will work this time :)
I have done a long overnight soak/reliability tests, but they were mainly runtime/CI stability checks.
And I did stress-test the LSP on a large codebase (20,000 files) for ~10 minutes on a Raspberry Pi. Edit-loop latency is stable and fast (~6.5ms avg, ~8.9ms p95), but full workspace indexing takes about 193–195s on this device.