How to integrate Growatt inverter over modbus serial

sandbank93 · January 17, 2024, 8:37pm

Hey together,

that’s my third day with Home Assistant.
I want to integrate my Growatt PV inverter over a RS485 to USB Cable into my Home Assistant.

So far so good.

I started with the modbus configuration in the configuration.yaml

modbus:

name: modbus_hub
type: serial
port: /dev/ttyUSB0
baudrate: 9600
bytesize: 8
method: rtu
parity: E
stopbits: 1

Question: Do i have a chance to simply check if the modbus connection is working?
Should there pop up an entity if the connection is established?
Or what else should i do to get a connection to the USB Port?

If the connection will work, which parameter do i need for the energy dashboard?

I hope someone could help me.

Thank you!

okanano · February 6, 2024, 11:01pm

Hi @sandbank93,

Were you able to integrate Growatt on modbus serial?

Jurgen2003 · June 3, 2024, 7:04am

@okanano
i have the same problem
this modbus code is in my confuguration ymal
and I have installed an integration with solax inverter modbus but the integration keeps failing it is a growatt mic 2500tl-x
does anyone have an idea what the problem is ?
greetings jurgen

matrover · July 6, 2024, 12:35pm

Hi,

Wanted to report my successful attempt to connect my Growatt MOD 7000TL3-X via modbus to Home Assistant.

Did it via a Modbus to TCP converter: Waveshare RS485 TO ETH
Config:

And the HA custom component:

Device config:

Device: