Solar Inverters Won't Expose Their Modbus Register Maps
13 posts across 2 communities since Jul 2026; 77% from community.home-assistant.io.
“Hi everyone, Over the past few days, I’ve noticed that my Huawei system is sometimes limiting the amount of power that can come from either the PV panels or the battery. I suspect it may actually be a global output limit , i.e. limiting the total power the system can deliver to…”
“G'day all. I've got a Hiconics HEC2-S6.0Hr2 6kW hybrid with a BHP300r2 battery (~30kWh). I'm pulling live data off the Solarman logger locally, but I need the official Modbus register map / comms protocol doc to map the battery values correctly. Solar, grid and load and battery…”
“Hi everyone, I am trying to build a dynamic battery charging control system using a Raspberry Pi connected directly to my Huawei SUN2000 inverter's internal Wi-Fi hotspot (192.168.200.1 on port 6607, Slave ID 0). A while ago I opened up modbus in read-only mode on this port in…”
Users are experiencing frustration and technical difficulties related to renewable energy systems, specifically solar and wind. Common issues include inaccurate data reporting from monitoring systems (Modbus register map problems), difficulty connecting devices, and navigating complex software interfaces like FusionSolar.
SOURCES (13)
“what sensors do i need for the energydashboard. there are a lot of them but i can’t figure out which to use for solar panels, and for battery. could someone help me out.”
“Anybody can help me with this ?anyone has it’s modbus register addresses ,related information like rj45 pin out also I want inverter dongle to keep feeding their cloud and we obtain data through rj45 over modbus”
“Hello everyone, I have a Deye SUN-3.6K-SG05LP1-EU-AM2-P inverter and I’m trying to integrate it locally with Home Assistant. I would like to use Modbus RTU over the RS485/METER port instead of relying on Deye Cloud. S…”
“Hi everyone, Over the past few days, I’ve noticed that my Huawei system is sometimes limiting the amount of power that can come from either the PV panels or the battery. I suspect it may actually be a global output limit , i.e. limiting the total power the system can deliver to my house and/or the grid. The limit is currently around 1.18 kW . I’ve made a few changes to my system over the past few days, so I’m not sure what caused this: I installed the latest firmware on both the inverter and the”
“Short version: firmware for an ESP32-S3 that sits next to any inverter with an RS485 port, reads it in whatever protocol that inverter happens to speak, and republishes it as MQTT with HA discovery, Modbus TCP, REST/JSON…”
“Hi everyone, I am looking for advice on the correct Modbus register to temporarily suspend my battery from discharging while our EV is charging. Environment & Setup: Inverter: Solis S5-EH1P3.6K-L (Model 3102) Batt…”
“I just got done doing part of my code to get Home Assistant working my EPEVER solar charge controller. Here is the information and I hope it helps. I will ad Using the eBOX-TCP-02 RS-485 to an 80amp solar charge contr…”
“[Add On] huABus - Huawei Solar Modbus to MQTT (Inverter → MQTT → Home Assistant) This Home Assistant add-on reads data from a Huawei inverters via Modbus TCP and publishes it to MQTT with full MQTT Discovery support. Ke…”
“I have a Vevor EM5500-48 inverter with battery and I would like to get the status of the battery and all available information via Modbus. A modbus connection via Waveshare modbus is realised but I don’t know how to obta…”
“Integration like Solarman with local modbus features. Work fine with my deye SG05LP1-EU-SM2-P and my cheap Ebyte NA111-E Modbus TCP TCP/MODBUS converter More tests are needed with other brands and other Modbus devices…”
“Hi to all! I have remote solar controller with modbus (RS-485) interface. I am currently collecting data using a 4G wireless router (Teltonika RUT955) using its embedded RS-485 interface. I need to use one of the seve…”
“G'day all. I've got a Hiconics HEC2-S6.0Hr2 6kW hybrid with a BHP300r2 battery (~30kWh). I'm pulling live data off the Solarman logger locally, but I need the official Modbus register map / comms protocol doc to map the battery values correctly. Solar, grid and load and battery SoC and pack voltage are coming out wrong (SoC shows 105% when it's really ~65%), so I think those registers are pointing at the wrong addresses. Has anyone got the register map PDF/spreadsheet from Hiconi”
“Hi everyone, I am trying to build a dynamic battery charging control system using a Raspberry Pi connected directly to my Huawei SUN2000 inverter's internal Wi-Fi hotspot (192.168.200.1 on port 6607, Slave ID 0). A while ago I opened up modbus in read-only mode on this port in the internal wifi, if memory serves via the FusionSolar app using the inverter's wifi, logging is as an installer. I think write was also possible, but I left it on read since I didn't need write acces for the”