LIEBERT-ESP2(8)

📦
version 2.8.5 · 18 versions
, in fedora 43, fedora 44

💖 LIEBERT-ESP2 💖

okay so bestie, this is the man page for liebert-esp2 — it lives in the NUT Manual (that's section 8, the sysadmin-y one 👑). It's the driver for Liebert UPS units that speak the ESP-II serial protocol. Let's get into it 🦋

✨ NAME ✨

liebert-esp2 — the driver for Liebert UPS, and it talks over the ESP-II serial protocol 💅

🌸 SYNOPSIS 🌸

liebert-esp2 -h

liebert-esp2 -a UPS_NAME [OPTIONS]
note bestie: this man page is only about the hardware-specific stuff for the liebert-esp2 driver. For the core driver deets, go read nutupsdrv(8) 🫶

🚨 SPECIAL CABLING NOTE 🚨

okay this one is IMPORTANT, pay attention 🙈

You must use an RS-232 cable with ONLY the RX, TX and ground pin when you're interfacing with GXT2 series UPS units (and possibly others too, no cap). Why? because the handshaking lines are being used for purposes other than RS-232 flow control. It's giving "not what you think it is" 💀

If you use a standard RS-232 cable with full handshaking, you may get undesired operation and/or shutdown. So yeah — confirm the proper cable/wiring with the diagram provided in the manual that came with your UPS. fr fr, do not skip this 🎀

🎀 SUPPORTED HARDWARE 🎀

Tested to work on these units:

  • Liebert GXT2-6000RT208

This is an experimental driver. You have been warned 😭

Also, this driver currently does not support modification of configuration parameters — so things like the low battery warning time and automatic restart policy? Not happening rn. Sorry bestie 💔

⭐ EXTRA ARGUMENTS ⭐

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

  • baudrate=num — sets the speed of the serial connection. Your options are 1200, 2400 (that's the default 👑), 4800, 9600 or 19200. Pick your vibe, but like, pick a real one ✨

👑 AUTHORS 👑

  • Richard Gregory <R.Gregory at liverpool.ac.uk>
  • Arjen de Korte <adkorte-guest at alioth.debian.org>
  • Nash Kaminski <nashkaminski at kaminski.io>

icons, all of them 🫶

🌈 SEE ALSO 🌈

The core driver:

Internet resources:

The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.5/

and that's the whole page, bestie 💖 this was Network UPS Tools 2.8.5, dated 10/07/2026 — periodt, slay, go plug in your UPS 🌸🧚

📦 where this page comes from