The F01039 error code in your Siemens Sinamics drive indicates writing to the parameter back-up file was unsuccessful. This file stores important configuration settings for your drive.

This fault indicate that writing to at least one parameter back-up file PSxxxyyy. in the non-volatile memory was unsuccessful due to there is not sufficient free memory space available or the non-volatile memory is defective and cannot be written to.

1. Check the file attribute of the files (PSxxxyyy., CAxxxyyy., CCxxxyyy.) and, if required, change from "read only" to "writeable".
2. Check the free memory space in the non-volatile memory. Approx. 80 kbyte of free memory space is required for every drive object in the system.
3. Replace the memory card or Control Unit.