Hi Osama,
I'm sorry. I misunderstood your question. When you first said start of the PLC, I thought you are referring to the PLC-App.
When you define your application as daemon: simple it will get started after installation of the app and also on reboot of the ctrlX CORE. The restart conditions you defined will start the application, in case it gets stopped.
Some more information on that can be found in the snapcraft yaml reference.
Could you check via command line, if your snap is really not running?
Best regards,
Nick
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