Siemens SIMOTION D4x5-2 Commissioning And Hardware Installation Manual page 107

Copy RAM to ROM
The Copy RAM to ROM menu command saves the following data via the engineering system
to the CF card:
● Technology packages and user data (units, configuration data, parameter assignments,
task configuration) from the "volatile SIMOTION data" area
● Current values are copied to the "volatile SIMOTION data" area, depending on the settings
in SIMOTION SCOUT.
Note
The "Copy RAM to ROM" menu command does not save the current values of the retain
variables to the CF card. Use the system function _savePersistentMemoryData for this
purpose.
Note
The "Copy RAM to ROM" function is also available for drive units and saves the volatile
SINAMICS data to the non-volatile memory (CF card).
Current RAM
If you change the system variable values, these take immediate effect in the current RAM.
New configuration data values are initially stored in the Next memory. Configuration data that
takes immediate effect is automatically transferred to the current RAM. Configuration data that
will only become active following a RESTART on the technology object (set the
restartactivation system variable to value ACTIVATE_RESTART) is only written to the current
RAM once the RESTART has taken place.
To save the configuration data changed online to the offline project, you must first transfer the
content of the current data RAM to the RAM using the menu command "Target system" >
"Copy current data to RAM".
Once you have done this, the configuration in SCOUT will no longer be consistent with the
configuration in the target device, as a consistency check is performed on the RAM data. Read
the data from the RAM using the menu command "Target system" > "Load" > "Load CPU /
drive unit to PG" (for the configuration data only) to re-establish a consistent system state.
Use the "Target system" > "Copy RAM to ROM" menu command to save the configuration to
the non-volatile memory on the CF card.
Note
The "Copy current data to RAM" command does not transfer the values of the system variables
to the RAM memory. This means that "Save to memory card (Copy RAM to ROM)" or "Save
in the engineering project (Load CPU / drive unit to PG)" is not possible.
In order to ensure that system variable values can also be saved to the engineering project
and memory card, the system variable values must be changed OFFLINE and then
downloaded to the target device and saved.
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 03/2018, A5E33441636B
Commissioning (hardware)
5.3 User memory concept
107