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peufeu2 / GrugBus

Convenient MODBUS abstraction on top of pymodbus to control Solis inverters
GNU Lesser General Public License v2.1
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New User #2

Open PaulSturbo opened 1 month ago

PaulSturbo commented 1 month ago

Hi, I am planning to attempt to install this on a Raspberry Pi. I have had a Sofar Hybrid in use for a couple of years and have just installed a Solis S5-EH1P3K-L with the Acrel 1ph CT meter. I need to control the Solis independently to prevent it from clashing with the Sofar.

I have a Raspberry Pi Zero but limited programming experience. I use HA and a lot of ESP32s on ESPHome so am well aquainted with YAML but I dont think that I can use ESPHome in this instance.

I'm about to reinstall Raspian on a fresh SD Card and get the Pi working.

I was looking through all the read_me documents in preparation but I could not find modbus_mitm.py. Is the file system here currently complete?

PaulSturbo commented 3 weeks ago

Sorted. Got the MITM working using EspHome. Thanks for the Modbus data. Inverter needs the full register set so you need to pack out the remaining registers with zeros.

peufeu2 commented 3 weeks ago

Oops, sorry, didn't see your message. I updated a lot of stuff in the code and didn't update the readme. Glad you solved your problem!

Inverter needs the full register set so you need to pack out the remaining registers with zeros.

Yes. Also if you got the latest Solis firmware, it queries the meter a lot, about 14 times/s so your MITM needs to respond quickly.