Siemens SIMATIC ET 200pro Operating Instructions Manual page 66

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).
Setting up block know-how protection
To set up block know-how protection, follow these steps:
1. Open the properties of the respective block.
2. Select the "Protection" option under "General".
Figure 7-2
3. Click "Protection" to display the "Define protection" dialog.
Figure 7-3
4. Enter the new password in the "New password" field. Enter the same password in the
"Confirm password" field.
5. Click "OK" to confirm your entry.
6. Close the "Know-how protection" dialog by clicking "OK".
Result: The blocks selected will be know-how-protected. Know-how protected blocks are
marked with a lock symbol in the project tree. The password entered applies to all blocks
selected.
Note
Password provider
Alternatively, you can set up know-how protection for blocks with a password provider.
CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC
Setting up block know-how protection (1)
Defining protection
Protection
7.4 Know-how protection
65