Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual page 313

● Retain TO (absolute encoder adjustment)
● Retain variables
Retain variables are variables in the interface or implementation section of a UNIT that are
declared with VAR_GLOBAL RETAIN or global device variables with the RETAIN attribute.
Note
Absolute encoder data are deleted during a memory reset and must therefore be readjusted
after the memory reset.
Data retained during memory reset
The following data are retained during a memory reset:
● TCP/IP parameters and DP parameters
● Diagnostic buffer
● Data saved with the _savePersistentMemoryData, _saveUnitDataSet or
_exportUnitDataSet system functions and the "Copy RAM to ROM" function
If backup files (PMEMORY.XML/PMEMORY.BAK) backed up with
_savePersistentMemoryData exist, the data in these files is restored to the non-volatile
SIMOTION data after the memory reset. The user can therefore perform a memory reset
to force the backed up non‑volatile SIMOTION data to be restored. This also includes the
absolute encoder position.
● Licenses
● SINAMICS NVRAM data
The technology packages and user data (configuration data, programs, parameter
assignments) that were previously backed up on the CF card using the "Copy RAM to ROM"
menu command will be transferred to the "non-volatile SIMOTION data" area of the
SIMOTION D4x5‑2 during the next power-up. Thus, an existing configuration on the CF card
is loaded to the SIMOTION device following the memory reset.
Memory reset via SIMOTION SCOUT
The SIMOTION device for which overall reset is to be performed must be online.
1. Open the "Control Operating State" dialog box in SIMOTION SCOUT. Select the "Target
system" > "Control operating state" menu command. Or click on "Control Operating State"
on the toolbar.
2. Switch the SIMOTION device for which memory reset is to be performed to STOP in the
"Control Operating State" dialog box.
3. Select the SIMOTION device under "Memory reset (MRES)." Click the "Run" button.
Confirm the command by clicking "Yes."
The memory reset will now be performed.
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
Commissioning (software)
7.18 Deleting data
313