POWERVAR_CX_SER(8)

💖 POWERVAR_CX_SER 💖

okay bestie, this is the manual page for powervar_cx_ser from the NUT Manual (that's section 8 of the manual, so it's a driver/admin-type thing, iykyk). Buckle up, we're talking Powervar UPS hardware today ✨

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🌸 NAME 🌸

powervar_cx_ser — the driver for Powervar UPM Series UPS equipment that talks over a Serial connection 🦋

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✨ SYNOPSIS ✨

powervar_cx_ser -h

powervar_cx_ser -a UPS_NAME [OPTIONS]

📌 Note, bestie, this matters: this man page only documents the hardware-specific features of the Powervar driver. For all the stuff about the core driver, go read nutupsdrv(8). Periodt.

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🔌 SUPPORTED HARDWARE 🔌

This driver supports the Powervar UPM UPS family — specifically the devices with a serial port connection. If your UPM Series device is plugged in over USB instead, no worries, that's a different page: see also powervar_cx_usb(8). 💅

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🎀 EXTRA ARGUMENTS 🎀

These are the optional settings this driver supports, and you drop them into your ups.conf(5) file:

• startdelay=num — changes the startup delay time away from its default of 1 second ⏱️
• offdelay=num — changes the shutdown delay time away from its default of 0 second 🙈
• disptesttime=num — changes the display test time away from the default of 10 seconds ✨

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👑 INSTANT COMMANDS 👑

This driver supports the following Instant Commands (go check upscmd(8) if you need the deets) 🔥

🌈 All GTS and UPM UPS units 🌈

• beeper.disable — turns the UPS beeper off. silence, finally 😌
• beeper.enable — turns the UPS beeper on.
• beeper.mute — mutes the UPS beeper temporarily (it's giving "not forever, just for now").
• shutdown.return — turns off the load, possibly after a delay, and then returns when power is back. main character comeback energy 💖
• shutdown.stop — stops a shutdown that's already in progress.
• shutdown.reboot — shuts down the load briefly while the UPS reboots. quick lil nap 😴
• shutdown.stayoff — turns off the load and stays off. no comeback arc, sorry 🫶
• test.battery.start.deep — starts a "deep" battery test. this one runs the UPS all the way down to the low battery point and then returns to the AC line ⚡
• test.battery.start.quick — starts a "quick" battery test. default time is 2 minutes, and you can set that time in the ups.conf file. see testime above, bestie 👀
• test.battery.stop — stops a battery test that's currently in progress. 🛑
• test.failure.start — starts a simulation of an input power failure (fake crisis, dramatic but safe 💀).
• test.failure.stop — stops that simulation of an input power failure.

🦋 All UPM UPS units 🦋

• test.panel.start — starts testing the UPS panel.
• reset.input.minmax — resets the minimum and maximum input voltage status. fresh start, we love it ✨

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🍓 WRITABLE VARIABLES 🍓

Want to know which variables you can actually write to for this UPS? Go look at upsrw(8), that's the one that tells you. 📝

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💜 AUTHORS 💜

• Bill Elliot <bill@wreassoc.com>

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🌟 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/

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okay that's the whole page, no cap 💅 this was Network UPS Tools 2.8.5, dated 10/07/2026 — go forth and keep those UPSes thriving, bestie 🎀🦋✨