> For the complete documentation index, see [llms.txt](https://docs.dnt.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dnt.de/dnt-lw-wsci/kommunikationsprotokoll/6.-datenrate-und-rejoin.md).
# 6. Datenrate und Rejoin
## 6.1 Datenrate
{% tabs %}
{% tab title="Get Data Rate" %}
Liest die eingestellte Datenrate aus.
**Downlink**
| Byte | Bit(s) | Value |
| :--: | :----: | :-----------------: |
| 0 | 7:0 | `0xF8` (Command ID) |
**Uplink**
| Byte | Bit(s) | Value |
| :----------: | :----: | :-----------------: |
| 0 | 7:0 | `0xF8` (Command ID) |
| 1 | 7:0 | `ID_DATA_RATE` |
| {% endtab %} | | |
{% tab title="Set Data Rate" %}
Setzt die Datenrate.
**Beispiel**
```
0xF9 04 = Datenrate DR3
```
**Downlink**
| Byte | Bit(s) | Value |
| :-----------: | :----: | :-----------------: |
| 0 | 7:0 | `0xF9` (Command ID) |
| 1 | 7:0 | `ID_DATA_RATE` |
| {% endtab %} | | |
| {% endtabs %} | | |
ID_DATA_RATE
| Eigenschaft | Wert |
| :------------: | :-------------------------------------------------------------------------------------------------------------: |
| Beschreibung | Einstellung der LoRaWAN Daterate |
| Größe | 4 Bit |
| Wertebereich | 0–6 |
| Standardwert | 0 |
| Interpretation | 0 → adaptive Datenrate aktiv
1 - 6 → y = x - 1
|
***
## 6.2 Rejoin
{% tabs %}
{% tab title="GET TIME UNTIL NEXT REJOIN" %}
Fragt die verbleibende Zeit bis zum nächsten Rejoin-Versuch ab.
**Downlink**
| Byte | Bit(s) | Value |
| :--: | :----: | :-----------------: |
| 0 | 7:0 | `0xF7` (Command ID) |
**Uplink**
| Byte | Bit(s) | Value |
|---|
| 0 | 7:0 | 0xF7 (Command ID) |
| 1 | 7:5 | Res. |
| 1 | 4:0 | ID_REMAINING_TIME_UNTIL_REJOIN[20:16] |
| 2 | 7:0 | ID_REMAINING_TIME_UNTIL_REJOIN[15:8] |
| 3 | 7:0 | ID_REMAINING_TIME_UNTIL_REJOIN[7:0] |
{% endtab %}
{% tab title="Get Rejoin Behavior" %}
Liest die Rejoin-Konfiguration aus.
**Downlink**
| Byte | Bit(s) | Value |
| :--: | :----: | :-----------------: |
| 0 | 7:0 | `0xFA` (Command ID) |
**Uplink**
| Byte | Bit(s) | Value |
| :----------: | :----: | :------------------------: |
| 0 | 7:0 | `0xFA` (Command ID) |
| 1 | 7 | `ID_SINGLE_REJOIN_EN` |
| 1 | 6:0 | `ID_REJOIN_INTERVAL[14:8]` |
| 2 | 7:0 | `ID_REJOIN_INTERVAL[7:0]` |
| {% endtab %} | | |
{% tab title="Set Rejoin Behavior" %}
Setzt das Intervall und die Art der Verbindungsversuche.
**Beispiel**
```
0xFB 00 18 = Rejoin alle 24 h
```
**Downlink**
| Byte | Bit(s) | Value |
| :-----------: | :----: | :------------------------: |
| 0 | 7:0 | `0xFB` (Command ID) |
| 1 | 7 | `ID_SINGLE_REJOIN_EN` |
| 1 | 6:0 | `ID_REJOIN_INTERVAL[14:8]` |
| 2 | 7:0 | `ID_REJOIN_INTERVAL[7:0]` |
| {% endtab %} | | |
| {% endtabs %} | | |
ID_REMAINING_TIME_UNTIL_REJOIN
| Eigenschaft | Wert |
| :------------: | :--------------------------------------------------------------------------: |
| Beschreibung | Minuten bis zum nächsten Rejoin. Ist der Wert 0, ist kein Rejoin ausstehend. |
| Größe | 21 Bit |
| Wertebereich | 0 - 196608 |
| Standardwert | 0 |
| Interpretation | `y = x` — `[y] = min` |
ID_SINGLE_REJOIN_EN
| Eigenschaft | Wert |
| :------------: | :----------------------------------------------------------------------------------: |
| Beschreibung | Aktiviert Single Rejoin oder Cyclic Rejoin |
| Größe | 1 Bit |
| Wertebereich | 0 - 1 |
| Standardwert | ß |
| Interpretation | 0 = einfaches Joining
1 = zyklisches Joininig
|
ID_REJOIN_INTEVAL
| Eigenschaft | Wert |
| :------------: | :--------------------------------------: |
| Beschreibung | Intervall für Rejoin Versuche in Stunden |
| Größe | 15 Bit |
| Wertebereich | 0–32768 |
| Standardwert | 0 |
| Interpretation | `[h] = x` |
---
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