TG-LR8 unresponsive

Hardware MikroTik IoT hardware
1

Hello,

I'm having trouble using the TG-LR8 sensor with the KPN Things portal.

Here is what happens:

  1. When I first add a new sensor, it works perfectly. It sends data every 5 minutes.
  2. The problem starts if I delete a working sensor from the portal and then add it back.
  3. Once re-added, the sensor stops sending data. I also cannot send any data back to the sensor.
  4. If I manually restart the sensor with a magnet (6-1), it reconnects and works again.

However, I cannot do this manually because the sensors are hard to reach once they are installed.
Does anyone know why this is happening or how to fix it without a manual restart?

thanks,
Anton

1 Like
2

If you delete device from network server, the device itself still assumes it has joined network until:

  1. No ACK for confirmed uplink.
  2. Failed link check.

Until then device will use address assigned on initial join - since it is now deleted on server there will be no data.

With default configuration link check is performed every 24h and there are no confirmed uplinks.

In your situation after ~24h device will perform link check and start new join procedure. After that it should
re-join network.

Depending on use case you may shorten this time:

  1. Reduce link check interval.
  2. Configure any frame to use confirmed uplink.

However, keep in mind that this will add TX load for your gateways.

3

Yes, the sensor rejoined the network after the 24 hours. Patience is a virtue :slight_smile:

Thanks!