> For the complete documentation index, see [llms.txt](https://docs.mathewscompany.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mathewscompany.com/pinnacle-2020/pinnacle-20-or-20-controls/troubleshooting/service/hmi-settings.md).
# HMI Settings
The last button under the Service page is the HMI Settings page.
The upper half of this page displays the information associated with the drive used to update the HMI software along with an activation button used when performing the update.
The bottom half of the page displays the Network Settings along with a PLC comms button that illuminates green when the PLC is communicating properly.
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