With the SCOUT functions "Save variables" and "Restore variables," you also have the option
to back up and restore data to your PC and restoring data that was changed during operation
and only stored in the runtime system.
Restoring non‑volatile SIMOTION data
SIMOTION data backed up on a CF card with _savePersistentMemoryData is restored in the
following cases:
1. After a module replacement (spare part scenario), see Section Replacing modules in the
spare part scenario (Page 114)
2. After a general reset, see Section SIMOTION D4x5-2 general reset (Page 312)
3. Via switch position, see Section Deleting/restoring non-volatile SIMOTION data
Backing up / restoring non-volatile SINAMICS data
Requirement: As of SIMOTION V4.3 / SINAMICS V4.5
For the SINAMICS Integrated, CX32-2 and SINAMICS S120 CU310-2/CU320-2, as of
SINAMICS firmware 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 more information, see Section Backing up / restoring / deleting SINAMICS NVRAM data
Power failure
With a power failure, the real-time clock is backed up by an internal SuperCap and, if available,
a battery in the fan/battery module.
The non-volatile data is backed up on the D4x5‑2 permanently and maintenance-free in an
NVRAM. In this way, the Control Unit is immediately ready for operation without data loss after
a power failure.
Power-up and non-volatile SIMOTION data
The table below lists the cases that can arise during power-up in conjunction with the non-
volatile SIMOTION data and explains how they are handled.
Commissioning (hardware)
5.3 User memory concept
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
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