Delta Ex-TL-US inverter, w/ LG RESU10H-Prime battery, Acrel meter

[dalklein]

Hello all, and thank you very much Tobias for this project. Thanks to you, I have the Gateway on an ESP32-D0WDQ6 (revision v1.0), connected to my Delta E6-TL-US inverter.

The Gateway ESP is connected to the inverter internal rs485 control bus which connects the inverter, battery and the Acrel AGF_AE_D_200 power meter. It is not on the external rs485 bus which should respond to gateway data requests as this Gateway project is designed to do.

I have connected to the control bus because I want to figure out the LG battery communication. Later I may also want to man-in-the-middle the Acrel meter so I can adjust how the inverter charges the battery. Also later I will want to connect to the external rs485 bus for monitoring, but there is no registers info I know of yet, unless it turns out similar to Delta Solivia inverters, we'll see.

I logged some data just now via webserial, copy/paste, just over wifi. It looks like this: https://pastebin.com/FZfUNLXv

I connected the ESP USB into PC and looked at that with hterm. That only showed ESP boot-up info, like this: �[0;36m[ 289][D][WiFiGeneric.cpp:1040] _eventCallback(): Arduino Event: 4 - STA_CONNECTED�[0m
�[0;36m[ 1854][D][WiFiGeneric.cpp:1040] _eventCallback(): Arduino Event: 7 - STA_GOT_IP�[0m
�[0;36m[ 1863][D][WiFiGeneric.cpp:1103] _eventCallback(): STA IP: 192.168.15.117, MASK: 255.255.255.0, GW: 192.168.15.1�[0m
WiFi Connected!
�[0;33m[ 7640][W][LittleFS.cpp:77] begin(): LittleFS Already Mounted!�[0m
WiFi connected with IP: 192.168.15.117

Am I missing something there, can the USB to PC connection show all the received rs485 data and log it over time to a file?

I'll make a dummy new inverter configuration, and start to label any messages as they're identified. Is that a good approach? Can I turn off the data request messages from the ESP ModbusGateway? Can I have it send any data which is not yet identified, out as unscaled value or hex, sorted by the message id?

Thanks!!! Dale

[tobiasfaust]

Hi,
Your inverter dont understand your request. Please adjust the request according your inverter Modbus documentation ;)

This wiki page should help: https://github.com/tobiasfaust/SolaxModbusGateway/wiki/adding-new-inverters-or-items