riello_ser - Man Page

Driver for Riello UPS Protocol UPS equipment via serial port connections

Synopsis

riello_ser -h

riello_ser -a UPS_NAME [OPTIONS]

Note

This man page only documents the hardware-specific features of the riello_ser driver​. For information about the core driver, see nutupsdrv(8)​.

Supported Hardware

riello_ser supports all recent Riello UPS, Aros UPS models which use the Riello UPS GPSER and SENTR protocols​.

Older Riello UPS products are not supported​.

Extra Arguments

You may need to tweak some settings, depending on the make and model of your UPS (see ups.conf(5)):

localcalculation

When enabled, driver will calculate values of battery​.runtime and battery​.charge "locally" in the driver​. This is for some Riello models which provide incorrect values in hardware readings, or none at all​. This "local calculation" is done according to nominal battery capacity, nominal battery voltage, actual battery charge, maximum and actual UPS load​.

You may want to also configure default​.battery​.voltage​.low and default​.battery​.voltage​.high in case the built-in default range (from 10​.7V to 12​.9V) does not match your hardware, or give a shot to default​.battery​.voltage​.nominal (e​.g​. 24) if your device does not serve that either​.

Note
Lead (PbAc) battery charge graph is not linear, so guesstimated charge value may not be perfectly accurate​. However it should be good enough to determine battery actual status and roughly estimate the time it can still power the system​.

Warning
This keyword may be deprecated in future releases of the driver, in favor of runtimecal and other settings which it requires (as seen in nutdrv_qx(8), blazer_ser(8) and blazer_usb(8) drivers)​.

Author

Massimo Zampieri

See Also

The core driver

nutupsdrv(8)

Internet resources

The NUT (Network UPS Tools) home page: https://www​.networkupstools​.org/historic/v2​.8​.5/

Referenced By

nut(7), nutupsdrv(8), riello_usb(8), upsd(8).

08/25/2026 Network UPS Tools 2.8.5 NUT Manual