Does this look right for EG4 FB21 (18kPV style Luxpower)?

[goldserve]

I don't seem to be getting correct values. Here is the debug.

2025-08-05 00:46:33.372 DEBUG (MainThread) [custom_components.lxp_modbus.classes.modbus_client] API Client: Polling the inverter for new data...
2025-08-05 00:46:33.705 DEBUG (MainThread) [custom_components.lxp_modbus.classes.modbus_client] Polling INPUT 0-124: Req[38]: a11a0200200001c242413433353033313535120000043434343030453032383700007d00406b, Resp[197]: a11a0500bf0001c2444a3433353033313535b1000003343434303045303238370000a0009a09013434343030453032383746414142032122010100190805002e1201000100000000002c280100557adc052c012c019808d8090c17d4174008500a34081405b004400bc8001000b004400bc8001000500ada16e81730753075121638181000100012163818100010002c003009a0089009200a000064006400e803e8036400640078006400000000000000000000000000320064000000173b0000000039ba
2025-08-05 00:46:33.941 DEBUG (MainThread) [custom_components.lxp_modbus.classes.modbus_client] Polling INPUT 125-249: Req[38]: a11a0200200001c24241343335303331353512000004343434303045303238377d007d005807, Resp[287]: 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

[ant0nkr]

Hello, @goldserve
Do you have DG/DJ Wifi Dongle? It's a new series e-Wifi dongles from LuxPower.

if yes, there is an open issue: #34

Luxpower has changed something in communication and currently I'm trying to obtain details from LXP Support.

[goldserve]

Yes, I have a DJ dongle. Solar assistant is working fine. Would it help to sniff the tcp traffic to see the data sent from SA to the dongle and reply from the dongle?

[ant0nkr]

Hi @goldserve
It would be really awesome to have that information.

Thank you

[goldserve]

Here is a packet capture between SA (04:d6:06:6a:4d:18) and the dongle (d8:3b:da:2a:9c:9c). If you use wireshark and search for my inverter serial number hex 34343430304530323837 (ascii to hex), you will see packets with that information.

cap-58-b6-33-15-13-c0.pcap0.zip

[ant0nkr]

Hello @goldserve
Could you, please, try to download main branch and install it manually?
or you would prefect that I created a beta release, which you can download via HACS?

I think, I found root cause, but testing is needed :)

Thank you.

[goldserve]

Looks to have fixed the issue now. I can go through and compare the 18kpv modbus spec to what's implemented now.

[ant0nkr]

Here you go. cap-30-87-d9-2d-f6-60.pcap0.zip home-assistant_2025-08-12T06-22-30.653Z.log

Hello @goldserve
I see only 1 issue, but, I don't think it's affecting something, I see data pretty much sent correct and HA integration should represent what is in SA. Am I missing something or right now everything works as expected?

Thanks.

[goldserve]

I think things are mostly working but there might be some flapping:

If you changed the integration to use RS485 to TCP connection that I have to the internal RS485 bus, I think the data availability would be much better. The dongle is probably overtaxed with uploading stats to eg4monitor + SA + your integration polling...

[ant0nkr]

Hi @goldserve
Yeah, it may flap from time to time because of Wifi dongle.
I'll work on RS485 to TCP communication in the next 2-3 weeks. It doesn't seem so hard to do. I just need to prepare ESP or similar which I would use for testing.

Thanks!

[ant0nkr]

Hello @goldserve
Are you good with current version? Can I close this discussion?

PS: I'm planning a work on direct communication with Inverter.

[goldserve]

Yes, I think the current implementation is good now. We can close.