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IOT 4.0 Cockipit Device Online status - what is the logic applied to determine the status?

Hello experts,

In IOT 4.0, each device has a property called "online". Could you please help us understand how a device is considered to be online or offline? I have certain devices with status "offline". However, we had sent data to these devices successfully.



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1 Answer

  • Apr 12, 2018 at 05:17 AM

    Hello Ajith,

    "offline" state of the device would mean that the respective gateway did not receive any requests (measures) from the device for a while.

    Regards, Anton

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    • Hi Ajith,

      as of today, Gateway infers the online/offline status of a device based on the incoming data that the device ingests. It does not actively poll the device to discover its status. If you need to implement a scenario where an application polls the device and expects an answer from it, you can rely on commands - the app could send a command to the device which, on turn, would respond dispatching a certain measurement. In short, the device implementation should listen to the command and use it as a trigger to dispatch a specific measurement to Gateway. Would this fulfil your requirement/use case?