We are reading Instantaneous Profile data from a DLMS meter using the Gurux library.

Normally the read works correctly and all values are returned as expected. However, sometimes we receive the following response:

I am trying to connect to Clou Meter CL730D22L using RS485 cable and Optical prop cable to this meter but every time I got no response from the meter, can you help on what is the best way to connect to this meter
I have used 9600 8None1 to connect as default but no response

Hi everyone;
I am new with DLMS.I have a question about gurux c library.Which DLMS book editions does the Gurux C library support?