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Can one Pylon-Monitor read a US3000C master with four chained US2000C (5 batteries or more)?

Funktioniert der Pylon-Monitor mit einem US3000C-Master und 4× US2000C (5 Batterien oder mehr)?

Chiesta il · Aggiornata · 2 risposte

In breve

Yes. One Pylon-Monitor plugged into the master's Console port reads every battery in the chain — up to 16 — and shows each one individually, with no error. Mixed models (US3000C + US2000C) are fine, and every cell of every battery is shown.

Cliente D. 🇩🇪 Germania Domanda
🇬🇧 Inglese · Traduzione inglese a cura del nostro team

Hello Support Team, I have the following question:

- What happens if I connect the product to my stack of 1× US3000C and 4× US2000C? The master is the US3000C.

- Will the app then provide data for batteries 1–4, or will I get an error message?

- How can more than 4 batteries be monitored, e.g. 5 or 8 batteries?

Originale · Deutsch

Hallo Support-Team, ich habe die folgende Frage:

- Was passiert, wenn ich das Produkt an meinen Stapel mit 1× US3000C und 4× US2000C anschließe? Master ist die US3000C.

- Liefert die App dann Daten von den Batterien 1–4, oder kommt eine Fehlermeldung?

- Wie können mehr als 4 Batterien überwacht werden, z. B. 5 oder 8 Batterien?

Team Pylon-MonitorRisposta ufficiale
🇬🇧 Inglese

Thank you for your message — thanks to your question, we updated the documentation on our website.

With a US3000C master and four US2000C behind it (5 units), no error appears: all five batteries show up, Battery 1 to Battery 5, each with its own state of charge, voltage, current, power, state, state of health, cycles and temperatures. The firmware reads up to 16 batteries in one chain, not 4 as our website used to say.

Plug the Pylon-Monitor into the Console port of the master only. The master relays the questions to the other batteries through the link cables, as shown in the diagram below. Mixed models are fine: the combined state of charge is weighted by each battery's own capacity rather than simply averaged.

Originale · Deutsch

Vielen Dank für Ihre Nachricht — dank Ihrer Frage haben wir die Dokumentation auf unserer Website aktualisiert.

Mit einem US3000C als Master und vier US2000C dahinter (5 Einheiten) erscheint keine Fehlermeldung: Alle fünf Batterien werden angezeigt, Battery 1 bis Battery 5, jede mit eigenem Ladezustand, eigener Spannung, eigenem Strom, eigener Leistung, eigenem Status, Gesundheitszustand, Zyklen und Temperaturen. Die Firmware liest bis zu 16 Batterien in einer Kette, nicht 4, wie es früher auf unserer Website stand.

Stecken Sie den Pylon-Monitor nur in den Console-Port des Masters. Der Master leitet die Abfragen über die Link-Kabel an die anderen Batterien weiter, wie im Schema unten gezeigt. Gemischte Modelle sind kein Problem: Der kombinierte Ladezustand wird nach der Kapazität jeder Batterie gewichtet, statt einfach gemittelt.

Pannello di una batteria Pylontech master: il cavo RJ45 nella porta CONSOLE alimenta il Pylon-Monitor, mentre il cavo di collegamento parte dal LINK PORT 1 verso la batteria slave
Sulla batteria master: CONSOLE verso il Pylon-Monitor, LINK PORT 1 verso la batteria slave.
L'errore che fanno quasi tutti: LINK PORT 1, non LINK PORT 0
Il cavo che collega la batteria master alla prima slave deve partire dal LINK PORT 1 della master — mai dal LINK PORT 0. Si inserisce nel LINK PORT 0 della slave, e ogni batteria successiva ripete lo stesso schema 1 → 0. Collegato al contrario, la master non vede mai il resto dello stack e il Pylon-Monitor mostrerà sempre una sola batteria, per quante ne abbiate.
Example: /api.json from a 2-battery pack
{
  "system": "pylon-monitor",
  "firmware": "2.2",
  "demo": false,
  "uptime": 308,
  "battery_link": true,
  "summary": {
    "soc": 42,
    "voltage": 49.05,
    "current": -16.12,
    "power": -790.69,
    "state": "Discharging",
    "units": 2
  },
  "health": {
    "soh": 98,
    "cycles": 619,
    "charge_cnt": 0,
    "discharge_cnt": 14739
  },
  "temps": {
    "battery": 30.7,
    "mosfet": 30.7,
    "low": 28.4,
    "high": 29.9
  },
  "cells": {
    "count": 30,
    "min": 3269,
    "max": 3271,
    "delta": 2,
    "units": 2,
    "mv": [3270, 3270, 3270, 3270, 3270, 3270, 3270, 3270, 3270, 3269, 3270, 3270, 3270, 3270, 3270, 3271, 3270, 3270, 3270, 3270, 3271, 3270, 3271, 3271, 3270, 3270, 3270, 3269, 3270, 3270]
  },
  "unitsDetail": [
    {
      "label": "Battery 1",
      "voltage": 49.05,
      "current": -7.78,
      "power": -381.4,
      "soc": 42,
      "soh": 0,
      "cycles": 0,
      "charge_cnt": 0,
      "discharge_cnt": 7332,
      "state": "Discharging",
      "temps": { "battery": 30.6, "mosfet": 30.2, "low": 28.4, "high": 29.6 }
    },
    {
      "label": "Battery 2",
      "voltage": 49.05,
      "current": -8.34,
      "power": -409.3,
      "soc": 41,
      "soh": 98,
      "cycles": 619,
      "charge_cnt": 0,
      "discharge_cnt": 7407,
      "state": "Discharging",
      "temps": { "battery": 30.8, "mosfet": 30.7, "low": 28.9, "high": 29.9 }
    }
  ],
  "net": {
    "ip": "192.168.0.237",
    "rssi": -49,
    "quality": "good",
    "mqtt": "not configured",
    "heap": 13784,
    "gateway": "192.168.0.1",
    "subnet": "255.255.255.0",
    "dns": "192.168.0.112",
    "mac": "AA:BB:CC:DD:EE:01"
  },
  "alarms": { "soc": 15, "temp": 40 }
}
AggiornamentoTeam Pylon-Monitor
🇬🇧 Inglese

Our first answer mentioned that the per-cell view stopped at 64 cells (about four batteries). That limit was removed in the firmware of 4 September 2026: every cell of all 16 batteries is now read and shown.

Originale · Deutsch

Unsere erste Antwort erwähnte, dass die Zellenansicht bei 64 Zellen (etwa vier Batterien) endete. Diese Grenze wurde mit der Firmware vom 4. September 2026 aufgehoben: Jede Zelle aller 16 Batterien wird jetzt gelesen und angezeigt.

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#US3000C#US2000C#multi-battery#master/slave#up to 16 batteries

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