Trying to read holding 110 register on 46 slave with no luck

[yury-sannikov]

Command: modbus -s 46 -b 115200 -p 2 -P n -v /dev/cu.usbserial-210 110

Output

Parsed 0 registers definitions from 1 files
Serial port /dev/cu.usbserial-210. Parameters: 115200 baud, 2 stop bit(s), parity: N, timeout 5.0s.
→ < 2e 03 00 6e 00 01 e2 48 >
← < 00 2e 03 02 04 80 6e e2 00 > 9 bytes

error:

Traceback (most recent call last):
  File "/opt/homebrew/anaconda3/bin/modbus", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/homebrew/anaconda3/lib/python3.11/site-packages/modbus/__init__.py", line 100, in main
    connect_to_device(args).perform_accesses(
  File "/opt/homebrew/anaconda3/lib/python3.11/site-packages/modbus_cli/modbus_rtu.py", line 69, in perform_accesses
    access.perform(self)
  File "/opt/homebrew/anaconda3/lib/python3.11/site-packages/modbus_cli/access.py", line 113, in perform
    self.read_registers_receive(modbus)
  File "/opt/homebrew/anaconda3/lib/python3.11/site-packages/modbus_cli/access.py", line 146, in read_registers_receive
    words = modbus.receive(self.request)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/anaconda3/lib/python3.11/site-packages/modbus_cli/modbus_rtu.py", line 58, in receive
    raise NotImplementedError('RTU function {}'.format(function))
NotImplementedError: RTU function 46

Can someone please explain why it compains on RTU function 46 tough it's a slave address