Siemens SIMATIC S7-1500 System Manual page 177

Protection
9.4 Know-how protection
Readable data
If a block is know-how protected, only the following data is readable without the correct
password:
● Block title, comments and block properties
● Block parameters (INPUT, OUTPUT, IN, OUT, RETURN)
● Call structure of the program
● Global tags without information on the point of use
● Static tags
Further actions
Further actions that can be carried out with a know-how protected block:
● Copying and deleting
● Calling in a program
● Online/offline comparison
● Loading
Global data blocks and array data blocks
You protect global data blocks (global DBs) from unauthorized access with know-how
protection. If you do not have the valid password, you can read the global data block but not
change it.
Know-how protection is not available for array data blocks (array DBs).
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SIMATIC Drive Controller
System Manual, 11/2019, A5E46600094-AA