Modbus exception 2 with d.scan() for Sunny Tripower 10 SE

[elemakil]

I am trying to read out data from my SMA Sunny Tripower 10 SE. I have activated Modbus connection and when I scan the device

import sunspec2.modbus.client as client
d = client.SunSpecModbusClientDeviceTCP(slave_id=126, ipaddr='192.168.1.20', ipport=502)

def progress(msg):
    print(msg)
    return True

d.scan(progress=progress)

The following printout is shown (traceback formatted by ipython):

Scanning model 1
Scanning model 11
Scanning model 12
Scanning model 103
Scanning model 120
Scanning model 121
Scanning model 122
Scanning model 123
Scanning model 64870
Scanning model 160
---------------------------------------------------------------------------
ModbusClientException                     Traceback (most recent call last)
Cell In[4], line 1
----> 1 d.scan(progress=progress)

File ~/sma/venv/lib/python3.11/site-packages/sunspec2/modbus/client.py:280, in SunSpecModbusClientDevice.scan(self, progress, delay, connect, full_model_read)
    276 mid = 0
    277 while model_id != mb.SUNS_END_MODEL_ID:
    278     # read model and model len separately due to some devices not supplying
    279     # count for the end model id
--> 280     model_len_data = self.read(addr + 1, 1)
    281     if model_len_data and len(model_len_data) == 2:
    282         if progress is not None:

File ~/sma/venv/lib/python3.11/site-packages/sunspec2/modbus/client.py:360, in SunSpecModbusClientDeviceTCP.read(self, addr, count, op)
    359 def read(self, addr, count, op=modbus_client.FUNC_READ_HOLDING):
--> 360     return self.client.read(addr, count, op)

File ~/sma/venv/lib/python3.11/site-packages/sunspec2/modbus/modbus.py:720, in ModbusClientTCP.read(self, addr, count, op)
    718 else:
    719     read_count = count
--> 720 data = self._read(addr + read_offset, read_count, op=op)
    722 if data:
    723     resp += data

File ~/sma/venv/lib/python3.11/site-packages/sunspec2/modbus/modbus.py:682, in ModbusClientTCP._read(self, addr, count, op)
    679     self.trace_func(s)
    681 if except_code:
--> 682     raise ModbusClientException('Modbus exception %d: addr: %s count: %s' % (except_code, addr, count))
    684 return resp[(TCP_HDR_LEN + 3):]

ModbusClientException: Modbus exception 2: addr: 40672 count: 1

The general connection seems to work as I can access some models afterwards, e.g.:

I am testing this using python 3.11.6 with sunspec2 version 1.1.5