Setting up the HA Integration with SigenStor

[matt0020190]

Hi all
Apologises I have researched, used Gemini and tried the Sigenergy support team, all leaving me none the wiser.

I had the SigenStor Hybrid Inverter 8kw, SigenStor Battery 10kw and Sigenergy Gateway installed this week.
I asked the installer to enable Modbus, I saw he did but it asked for an IP. He entered the inverters.

I tried the integration in HA adding the inverters IP, slave ID as 1 and I get error "Could not connect".

I tested the ports and see that the inverter has 502 open and listening. I checked my firewall and no internal ports are blocked. The HA server and Sigenergy inverter are also on the same network e.g. 192.168.1.XXX

I contacted Sigenergy support and they said the inverter IP should not be in the installer settings, it should be the IP of the modbus server. Confused as I thought the inverter WAS the server?

Can anyone give me a few tips on how to get this working and what IP is actually set in the installer app for TCP Modbus?

If someone could list the instructions to follow in order this would be great!

Thank you in advance.

[Namel999]

Hi,
I had my system installed in October, I asked the installer to enable the Modbus TCP server which they did and I got the HA integration working. It worked for a week but I noticed it broke every now and then. I now realise that it was the HA updates that broke it. It basically lost communication. I tried removing the the integration and then re-adding it however it could not find the Sigenergy system no matter what I do. The app works and I can ping the IP address of the inverter but the integration just can't find it. So for me that latest version of the HA seems to have caused the communication issue so it sounds like the issue you might be having? I'm currently on Core 2025.11.2
Supervisor 2025.11.3

[matt0020190]

Thanks for your response. Appreciated.

I actually think it might be unrelated as I figured it out eventually with trial and error.

Essentially my installer added an IP address into the sigen app under Modbus Server IP. It should have in fact been blank.

Once I had managed to explain to Sigen Support, it was removed and the integration works fine.

Hope you solve your issue!

Matt

[dajupp]

Hi @matt0020190 , how did you contact Sigen support? I have the same problem. My installer activated the Modbus server and I can see that the port is open, but I also can’t connect to it with HA. My inverter is a new TP2 with Sigen Battery Controller

[matt0020190]

Hi @dajupp

You can contact them using the troubleshoot option in the sigen app.

Worth asking them to check the modbus server is activated and that the server IP is left blank.

[skomo83]

@dajupp Hi @matt0020190 , how did you contact Sigen support? I have the same problem. My installer activated the Modbus server and I can see that the port is open, but I also can’t connect to it with HA. My inverter is a new TP2 with Sigen Battery Controller

Did you get yours working ?

[dajupp]

@dajupp Hi @matt0020190 , how did you contact Sigen support? I have the same problem. My installer activated the Modbus server and I can see that the port is open, but I also can’t connect to it with HA. My inverter is a new TP2 with Sigen Battery Controller

Did you get yours working ?

yes my installer configured the remote rms mode. he configured my inverter to connect to a modbus server. after deleting this settings it works. just enabling the modbus server with the switch is enough.