> For the complete documentation index, see [llms.txt](https://docs.spadnext.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spadnext.com/extending-and-apis/serial-connection/device-communication-flow/device-config-phase.md).

# Device CONFIG-Phase

After the device initialisation SPAD.neXt will send the command

`0,CONFIG[,Parameters];`

to the device and start the configuration Phase.

The device can now issue commands to configure the device.

The configuration phase will end when the device ackknowledges with

`0,CONFIG;`

{% hint style="warning" %}
The device will not show up in SPAD.neXt UI before configuration phase is completed
{% endhint %}


---

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