mvandersteen / sungrowinverter Goto Github PK

Changing E03 to E0F in inverter.py makes it work a bit better but something happens:

Running test.py with debug gives this:

http://adent.chroma.se/output.txt

Best regards
Mikael

Hi and thanks for your impressive work!

I'm about to receive a SG15RT string inverter myself in a few weeks. Can you confirm your script works with it? I know you listed it as supported, but I read elsewhere that Modbus TCP does currently not work on string inverters, only on the hybrid ones. Thank you.

Tried installing on python 3.10.5. This failed due to:

• pyserial-asyncio is not listed as a requirement
• pymodbus is installed in version 3.0.0 but it seems an older version is required

This fixed it for me:

pip install pyserial-asyncio
pip install pymodbus==2.4.0

It would probably best to update requirements.txt to list the missing package and pin the pymodbus package to the desired older version.

I think I'm seeing a division by zero error from Line 149 of Hybrid.py early in the day before there's been any generation. As eval() only takes simple expressions a fix may be to add a small quantity to daily_pv_generation, e.g. 0.001

Hello there, has anyone tried running both the Modbus RTU & Modbus TCP from Sungrow's RS-485 & Ethernet port respectively, simultaneously?

Will it interfere with each other?

My SunGrow SG2.5RS-S inverter times out on 'self._send(GET_KEY)'. After (the default 60s) timeout the communication proceeds without encryption and returns valid values. When commenting out 'self._send(GET_KEY)' the communication completes very quickly, without timeout.
I think this problem affects all SGxxRS models (type codes 0x2600-0x2607) and possibly others.
A possible (very ugly) workaround is to decrease the timeout value, but I do not really want to do this.

@jarod1990-Developper: Could you please confirm if you have the same timeout problem with your SG2.0RS-S inverter?
@mvandersteen: Please look into the problem and provide a solution! Thanks!

I would like to get data out of my inverter but I seem unable to import the SungrowInverter library.
pip3 successfully installed both SungrowModbusTcpClient-0.1.6 and SungrowInverter-0.1.7 but when I try to import the module I get a TypeError that I am unable to figure out the reason for.

`PI:~# python3
Python 3.7.3 (default, Jul 25 2020, 13:03:44)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

from sungrowinverter import SungrowInverter
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.7/dist-packages/sungrowinverter/init.py", line 4, in
from sungrowinverter.SungrowInverter import SungrowInverter
File "/usr/local/lib/python3.7/dist-packages/sungrowinverter/SungrowInverter.py", line 16, in
from sungrowinverter.configs.inverter import (
File "/usr/local/lib/python3.7/dist-packages/sungrowinverter/configs/inverter.py", line 21, in
ModBusRegister(5001, "nominal_output_power", "U16", 0.1, KILO_WATT),
TypeError: 'type' object is not subscriptable
`

If I loop the test.py file with 10 seconds of sleep after each cycle 4 out of 5 times I get the error:
"pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] ModbusTcpClient(192.168.10.28:502): Connection unexpectedly closed 3.814697265625e-05 seconds into read of 8 bytes without response from slave before it closed connection"
and the 5th time it reads the data perfect.

python version 3.9.2
pymodbus version 3.4.1
code test.py file:

_#!/usr/local/bin/python3
import asyncio
import logging
import time

from sungrowinverter import SungrowInverter

logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.INFO)
logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.DEBUG)

# Change IP Address (192.168.4.2) to suit your inverter 
client = SungrowInverter("192.168.10.28", timeout=5)

while True:
    loop = asyncio.new_event_loop()
    asyncio.set_event_loop(loop)
    result = loop.run_until_complete(client.async_update())

    #Get a list data returned from the inverter.
    if result:
        print(client.data)
    else:
        print("Could not connect to inverter")
    
    time.sleep(10)_

Has anyone encountered this issue?

Greetings

I have a Sungrow Device Model: SG5K-D with a Wifi V31 dongle on it. When trying the test.py, I get this error.

ERROR:UPSUPPORT INVERTER: Supported inverter device_type_code [294] is not supported

I see that someone has a fix for this with a HA docker but I haven't implemented it yet.

Regards

Stephen

Thanks a lot for this work. If you want you can add this inverter :
SungrowInverterModel(0x2600,'SG2.0RS-S','string',2),
this perfectly run on windows with python3.11.

However, on my raspberry Pi (same version of python), have this issue :

in red, the different with windows : "Using proactor "IocProactor"

Any ideas ?