LEGRAND NUMERIC HPi 33 EVO User Manual page 16

On the main page of Muser4000, click the button of "Append", then goes to a window of "Append equipment".
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Put the UPS name into "Equipment Name", and UPS' ID address into "Equipment address".
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Click the button "Append", then the connection between UPS & computer is accomplished.
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CAUTION!
When the UPS works on inverter and if you want to use PC to set the
output voltage and frequency the inverter must be first shut down.