> For the complete documentation index, see [llms.txt](https://docs.ceruleansonar.com/c/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ceruleansonar.com/c/ethernet-rov-locator/communicating-with-the-rovl/messages-from-host-to-rovl/valid-commands-from-host-to-rovl-ethernet-only/command-mavlink-sysid.md).

# Command: MAVLINK-SYSID

Format: MAVLINK-SYSID n

Example: `MAVLINK-SYSID 254`

Sets the MAVLink System ID (the ID of ROVL itself to distinguish itself from other systems talking to the target MAVLink interface) to n. The default is 254. 

{% hint style="info" %}
This command is used in Omnitrack configurations and is not useful in a stand-alone configuration.
{% endhint %}