Cause : ACX: Loading the parameter back-up file unsuccessful. An error has occurred when downloading PSxxxyyy.ACX or PTxxxyyy.ACX files from the non-volatile memory.

Reasons could be:
- incorrect component type in the actual topology
- component does not exist in the actual topology
- component not active

Remedy:

- If you have saved the project data using the commissioning software, carry out a new download for your project. Save using the function "Copy RAM to ROM" or with p0977 = 1 so that all of the parameter files are again completely written to the non-volatile memory.

- replace the memory card or Control Unit.
- for byte 1 = 255:

Correct the drive object type (see p0107).

Keyword : A01038 alarm in siemens 6RA80 DC Drive