search

wimb0 / home-assistant-saj-r5-modbus

Home Assistant Component for reading data locally from SAJ R5 (and Zonneplan One) Inverters through modbus TCP.
MIT License
33 stars 14 forks source link

Clarifications please #63

Closed Arise closed 2 years ago

Arise commented 2 years ago

My inverter is SAJ R5-10K-T2. I'm waiting for the smart meter for this to arrive, I believe the Smart Meter compatible with this is actually a Chint DTSU-666.

I was under the impression that the Smart Meter is actually sending the stats over RS485 (not sure if in Modbus) to the inverter, and the inverter only reads this data.

For this project for home assistant is the elfin device required, or I can read the data directly in Raspberry pi with a USB to RS485 adapter? In this case does that imply that the inverter not only reads data from the smart meter, but also broadcasts his own info to other device?

wimb0 commented 2 years ago

You need the Elfin device to read out the inverter. This integration for Home Assistant reads out the Elfin and is only compatible with the SAJ inverter. The Elfin device is a RS485/modbus to wifi bridge. Your Smart meter also talks RS485 / modbus, but is not compatible with this integration. However, you can use your RPi with USB to RS485 to read that device. I think Home Assistant has a modbus integration you can use for that.