help needed on actual modbusRTU implementation

[rzylius]

Dear Alexander,

I have a solar inverter with quite a specification:

The IMEON RS485 port is configured to use the following

• Baud rate : 9600
• Data bits per Byte : 8
• Parity : None
• Stop bits : 1
• Encoding: big endian(MSB LSB: value 0x
• CRC: little endian (LSB MSB: value 0x3412 is 0x1234)
• Slave address: 0x01
• Data message format: Hexadecimal
• The instant read values in the database are updated each 10 seconds.
• The set values are updated each 1 minute in database.
• Response timeout is 10 seconds.

I got connected and all works pretty ok out of the box. But I quite often I receive error (not consistently)

EX_TIMEOUT = 0xE4, // Custom. Operation not finished within reasonable time

I tried to play with #define MODBUSIP_TIMEOUT 1000 setting, without apparent improvement. maybe you may advise the logic how I should try to customize settings for it to work reliably?

Very much appreciate your work,

regards, Rimantas