MODBUS No response received, expected at least 4 bytes (0 received)

Configuration
1

Hi, I’ve just integrated my EPEVER controller to myRPI based HA configuring modbus module with USB (CH 340 RS485 to USB converter). Everithings is working but I’ve found the following recurrent message in the log:

Logger: homeassistant.components.modbus.modbus
Source: components/modbus/modbus.py:403
Integration: Modbus (documentation, issues)
First occurred: 9:34:15 AM (12 occurrences)
Last logged: 9:43:56 AM

Pymodbus: epever_150: Modbus Error: [Input/Output] Modbus Error: [Invalid Message] No response received, expected at least 4 bytes (0 received)

Here my connection parameters in the configuration.yaml

- name: epever_150  
  type: serial
  baudrate: 115200
  bytesize: 8
  method: rtu
  parity: N
  port: /dev/ttyUSB0
  stopbits: 1

What’s this error means and how I can remove it?
Thanks in advance for the support

2

Timeout issues

3

Thanks for the reply, extending the refresh rate (currently set to 5 sec) could help?