jebu - 16 hours ago

I'm setting up an OPC UA server in CODESYS. My understanding so far:

  1. Calling methods over OPC UA requires an Information Model β€” the plain Symbol Set / Symbol Configuration alone doesn't support method calls. Is that correct, or is there a way around it?

  2. With an Information Model, the Node IDs are auto-generated and I can't set them manually. Assuming that's right:
    -Are these generated Node IDs stable across builds/downloads, or can they change?
    -If they can change, what triggers it β€” renaming a variable/method, reordering objects in the model, a rebuild, a re-download to the PLC?