powervar_cx_ser - Man Page

Driver for Powervar UPM Series UPS equipment with Serial connection

Synopsis

powervar_cx_ser -h

powervar_cx_ser -a UPS_NAME [OPTIONS]

Note

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

Supported Hardware

This driver supports the Powervar UPM UPS family (devices with serial port connection)​. For USB connected UPM Series devices, see also powervar_cx_usb(8)​.

Extra Arguments

This driver supports the following optional settings in the ups.conf(5) file:

startdelay=num

Change startup delay time from 1 second default​.

offdelay=num

Change shutdown delay time from 0 second default​.

disptesttime=num

Change display test time from the 10 second default​.

Instant Commands

This driver supports the following Instant Commands (see upscmd(8)):

All GTS and UPM UPS units

beeper​.disable

Disable the UPS beeper​.

beeper​.enable

Enable the UPS beeper​.

beeper​.mute

Temporarily mute the UPS beeper​.

shutdown​.return

Turn off the load possibly after a delay and return when power is back​.

shutdown​.stop

Stop a shutdown in progress​.

shutdown​.reboot

Shut down the load briefly while rebooting the UPS​.

shutdown​.stayoff

Turn off the load and remain off​.

test​.battery​.start​.deep

Start a "deep" battery test​. This test runs the UPS until the low battery point and then returns to the AC line​.

test​.battery​.start​.quick

Start a "quick" battery test​. The default time is 2 minutes​. This time can be set in the ups​.conf file​. See testime above​.

test​.battery​.stop

Stops a battery test that is in progress​.

test​.failure​.start

Starts a simulation of an input power failure​.

test​.failure​.stop

Stops a simulation of an input power failure​.

All UPM UPS units

test​.panel​.start

Start testing the UPS panel​.

reset​.input​.minmax

Reset minimum and maximum input voltage status​.

Writable Variables

See upsrw(8) to see what variables are writable for the UPS​.

Authors

See Also

For USB connected GTS and UPM Series devices, see powervar_cx_usb(8)​.

The core driver

nutupsdrv(8)

Internet resources

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

Info

10/07/2026 Network UPS Tools 2.8.5 NUT Manual