Siemens SINAMICS S120 Manual page 82

Control Units and operating elements
4.4 Control Unit CU320-2 DP (PROFIBUS)
Note
Data loss when the Control Unit with memory card is returned
When returning a defective Control Unit for repair or testing, the data on the memory card
(parameters, firmware, licenses, etc.) could be lost.
• Do not return the memory card as well, but keep it in a safe place so that it can be inserted
in the replacement unit.
Note
Please note that only SIEMENS memory cards can be used to operate the Control Unit.
80
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2