Siemens SIMATIC S7-1500 System Manual page 101

The following options exist for the application of actual values from the snapshot as start
values:
● Apply the values of an opened data block
You can apply all values or only the values of the tags marked as a "Setpoint" as start
values in an open data block.
● Apply the values of multiple data blocks in the project tree
In the project tree, you can apply either all setpoints or all retentive values as start values.
The following requirements must be met in order to be able to back up the actual values of
data blocks:
● The CPU is connected to the programming device/PC via the PROFINET interface.
PROFIBUS interfaces of the CPU and interfaces of CMs/CPs are also supported.
● The CPU is online.
● As least one data block has been loaded to the CPU.
● The data blocks are not write-protected.
Automation system
System Manual, 12/2014, A5E03461182-AC
Configuring
6.1 Configuring the CPU
101