Siemens SIMATIC ET 200pro Series Operating Instructions Manual page 210

Repair
9.3 Firmware upgrade and downgrade
9. Switch off the 24 V inverter power supply.
10.Wait until the LEDs on the Control Unit have gone out.
Decide whether to remove the memory card from the inverter:
– You leave the memory card in place:
– You remove the memory card or the memory card does not contain any data backup.
210
If the memory card already includes a data backup, the inverter imports the settings
from the memory card when the power returns.
Note
The inverter imports the settings from the memory card.
The further procedure can change the inverter settings.
• If the memory card already contains settings, check whether the settings are
suitable for the inverter.
• If the settings are not suitable for the inverter, remove the memory card.
In this case, the inverter retains its settings.
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257324B AE
SIMATIC ET 200pro FC-2 converter