backup file fails (e.g. because the capacity of the CF card is insufficient), this backup copy of
the
backup file is used the next time an attempt is made to restore the non-volatile SIMOTION
data content. If the new file is successfully created, the backup copy of the backup file is
deleted.
NOTICE
Loss of data due to failure to make backup copies
Non-backed-up non-volatile SIMOTION data can be lost on hardware replacement (module
defect), for example, if the current value of the retain variables have not been backed up and
replaced by their initial values again.
Back up the non-volatile SIMOTION data on the CF card.
NOTICE
Repeat referencing necessary after absolute encoder overflow
If
an absolute encoder overflow occurs after _savePersistentMemoryData, the actual position
value is no longer correct after the non-volatile SIMOTION data are restored.
In this case, homing (absolute encoder adjustment) must be repeated.
With the SCOUT functions "Save variables" and "Restore variables," you also have the option
of
backing up to your PC and restoring data that was changed during operation and only stored
in the runtime system.
Reloading non‑volatile SIMOTION data
SIMOTION data backed up on the CF card with _savePersistentMemoryData is reloaded in
the following scenarios:
1. After a module replacement, see Section Replacing modules in the spare part scenario
(Page 96)
2. After a memory reset, see Section SIMOTION D410-2 memory reset (Page 233)
3. Via switch position, see Section Delete/restore non-volatile SIMOTION data (Page 310)
Reloading non‑volatile SINAMICS data
For the SINAMICS Integrated and SINAMICS S120 CU310-2/CU320-2, as of SINAMICS FW
version V4.5, the non-volatile SINAMICS data (NVRAM data) is backed up by setting the CU
parameter p7775 to 1.
Restoring
● Is performed automatically in the event of a module replacement
A module replacement is detected on the basis of the serial number.
● Can be performed manually
Restoring can be initiated manually by setting the CU parameter p7775 to 2.
For further information, see Section Backing up / restoring / deleting SINAMICS NVRAM
data (Page 177).
Commissioning (hardware)
5.6 User memory concept
SIMOTION D410-2
92 Commissioning and Hardware Installation Manual, 01/2015
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