Asked Zenner’s support, and re-join is an operation that requires a manual intervention, via a mobile phone using NFC.

While I understand the rationale behind this, physical access to a water meter is not trivial. A better solution would be fo the water meter to use LoRa’s LinkCheck MAC command and re-join if necessary.

After trying to decode some of the payloads, it is clear that little endian is used everywhere.

But its suprising that the manual says it uses big endian.

Hello,

 

We had a Zenner IUWS joining our LoRa gateway. After which it sent a few uplinks. However, the gateway has an inactivity monitoring feature, where devices that do not send at least one uplink every 12h are removed from the network.

Because the next uplink of the water meter was the daily consumption (24h latter), the… Read more

Hello,

 

We had a Zenner IUWS joining our LoRa gateway. After which it sent a few uplinks. However, the gateway has an inactivity monitoring feature, where devices that do not send at least one uplink every 12h are removed from the network.

Because the next uplink of the water meter was the daily consumption (24h latter), the… Read more

Hello,

On the document “Lora radio packet definitions” v1.34, it states that big endian is used (chap 2.2, “If not specified differently, byte order will be MSB first.”)

And on the “IUW-IUWS User guide for system integrators” v1.9, there are some LoRa packet examples on page 41. And in these, it appears that little endian is used to… Read more