POWERVAR_CX_SER(8) NUT Manual POWERVAR_CX_SER(8) NAME powervar_cx_ser - 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 o Bill Elliot 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/v2.8.4/ Network UPS Tools 2.8.4 08/13/2025 POWERVAR_CX_SER(8)