The panel will come in with a Kiosk app. You can set that up to point directly to the correct ip:port for WebVisu.
If Kiosk mode was running when the device lost power then it will boot back up in Kiosk.
Depending on the software version on the device when it arrives you might need to update it to RC4. You can find instructions for that
https://developer.community.boschrexroth.com/t5/ctrlX-HMI/Info-WR21-Firmeware-update/m-p/76916#M248
Kiosk is a borderless browser for the most part and runs on the chromium engine.
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