Industrial cybersecurity
4.7 Secure operation of the system
S7-1500R/H redundant system
46 System Manual, 01/2024, A5E41814787-AF
4.7.9.1 Securely removing data
Before disposing of components of the S7-1500R/H redundant system, you must securely
delete all data from the storage media of these components.
Data misuse resulting from non-secure deletion of data
Incomplete or non-secure deletion of data from data memories can result in data misuse by
third parties.
For this reason, ensure secure deletion of data from all storage media before disposing of
the product.
To delete all data from the data memories of the R/H CPUs to be disposed of, reset the
corresponding modules to their factory settings. The "Reset to factory settings" function
resets the CPU to its as-delivered condition. The function deletes all information saved
internally on the CPU.
Deleting data
For secure deletion of the data from each R/H-CPU and the SIMATIC Memory Card, follow
these steps in the order given:
1. Format the SIMATIC Memory Card.
The format operation deletes all contents from the SIMATIC Memory Card.
Formatting with STEP 7:
– Establish an online connection.
– Open the online and diagnostics view of the CPU (either from the project context or via
"Accessible devices").
– In the dialog window, select "Functions > Format memory card" and then click the
"Format" button.
Formatting using the display of a CPU
– In the display of the CPU, select the menu "Settings" > "Card functions" > "Format card"
and confirm with OK.
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