Data Backup; Backing Up The Non-Volatile Memory - Siemens SINAMICS S120 Function Manual

14.10

Data backup

14.10.1

Backing up the non-volatile memory

For operation-relevant data, the CU320-2 and the CU310-2 have a non-volatile memory, the
NVRAM (Non-Volatile Random Access Memory). The data of the fault buffer, the diagnostics
buffer and message buffer is saved in this memory.
Certain circumstances, for example, a defect in the Control Unit or if the Control Unit has been
replaced, require that this data is backed up. After the hardware has been replaced, transfer the
backed up data back to the NVRAM of the Control Unit. You can perform these operations using
parameter p7775:
1. Using p7775 = 1 backup the NVRAM data to a memory card.
2. Using P7775 = 2, copy NVRAM data from the memory card to the NVRAM.
3. Using P7775 = 3, delete the data in the NVRAM.
After the data has been successfully cleared, a POWER ON is automatically carried out.
p7775 is automatically set to 0 if the operation was successful. If the operation was not
successful, p7775 indicates a corresponding fault value. Further details of the fault values can
be found in the SINAMICS S120/S150 List Manual.
Note
NVRAM data change
The data in the NVRAM can only be restored or deleted if the pulse inhibit is set.
Backing up NVRAM data
With p7775 = 1, the NVRAM data of a stand-alone Control Unit is saved in the subdirectory: "...
\USER\SINAMICS\NVRAM\PMEMORY.ACX" on the memory card.
When the Control Unit is integrated in a controller, the NVRAM data is saved in the
subdirectory: "... \USER\SINAMICS\NVRAM\xx\PMEMORY.ACX" on the memory card. "xx"
corresponds to the DRIVE CLiQ port.
When saving, all data is backed up from the NVRAM.
Note
Backing up NVRAM data
The backup of the NVRAM data to the memory card is also possible when the pulses are
enabled. However, if the drive is operated when NVRAM data is being transferred, then it is
possible that the backed up data is not consistent with the NVRAM data.
Restoring NVRAM data
With p7775 = 2, the NVRAM data is transferred back from the memory card into the Control
Unit. When restoring you decide which data you require and want to copy.
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Basic information about the drive system
14.10 Data backup
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