Keep-alive

How to decode the keep-alive packet and how to set new keep-alive period

Keep-alive command explanation

Periodically sent message which contains the most important device data.

The data is described in Table 3. In Table 4 example packet is given.

Table 3

Table 4

Set keep-alive period command explanation

Sets the period of the device keep-alive command messages. See table 5 for details.

Table 5

Example command, [Hex]: 020A

The example sets the keep-alive period to 10 minutes.

Note that the keep-alive period must respect the LoRaWAN messages duty cycle limitations. Otherwise the message will be sent when this is allowed. Also, the bigger keep-alive period, the less battery discharge. In most of cases, min. allowed period is 3 minutes and recommended values are 10 minutes or greater.

Get keep-alive period command explanation

This command is used to get the device keep-alive command messages period. Server sends the command code and the response is sent from the device together with next keep-alive command. The sent command request and the received command response are described in Table 6. The keep-alive in the response is omitted for clarity.

Table 6

Example command sent from server: 0x12;

Example command response: 0x1209 – Device keep-alive period is 9 minutes.

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