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TS2651N111E78

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password. This saves you time.
You will find more information on connecting a password provider in the STEP 7 online help.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
Further actions
Further actions that can be carried out with a know-how protected block:
● Copying and deleting
● Calling within a program
● Online/offline comparison
● Load
Global data blocks and array data blocks
You can provide global data blocks (global DBs) with know-how protection. Users who do
not possess the valid password can read the global data block but not change it.
You cannot provide array data blocks (array DBs) with know-how protection.
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"5. Enter the new password in the "New password" field. Enter the same password in the
"Confirm password" field.
6. Click "OK" to confirm your entry.
7. 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 providerTo open a know-how protected block, follow these steps:
1. Double-click the block to open the "Access protection" dialog.
2. Enter the password for the know-how protected block.
3. Click "OK" to confirm your entry.
Result: The know-how-protected blockopens.
Once you have opened the block, you can edit the program code and the block interface of
the block for as long as the block or STEP 7 is open. The password must be entered again
the next time the block is opened. If you close the "Access protection" dialog with "Cancel",
the block will open but the block code will not be displayed and you will not be able to edit
the block.
If you copy the block or add it to a library, for example, this does not cancel the know-how
protection of the block. The copies will also be know-how-protected.
Removing block know-how protection
To remove block know-how protection, follow these steps:
1. Select the block from which you want to remove know-how protection. The protected
block must not be open in the program editor.
2. In the "Edit" menu, select the "Know-how protection" command to open the "Know-how
protection" dialog.
3. Clear the "Hide code (Know-how protection)" check box.The copy protection allows you to protect your program against unauthorized duplication.
With copy protection you associate the blocks with a specific SIMATIC memory card or CPU.
Through the association with the serial number of a SIMATIC memory card or CPU, the use
of this program or block is only possible in combination with a specific SIMATIC memory
card or CPU.
Copy and know-how protection
Recommendation: To prevent an unauthorized reset of the copy protection, provide a copyprotected
block with additional know-how protection. First set up the copy protection for the
block and after this the know-how protection.
Setting up copy protection
To set up copy protection, follow these steps:
1. Open the properties of the respective block.
2. Select the "Protection" option under "General".
3. In the "Copy protection" area, select either the "Bind to serial number of the CPU" entry or
the "Bind to serial number of the memory card" entry from the drop-down list.Activate the option "Serial number is inserted when downloading to a device or a memory
card" if STEP 7 is to automatically insert the serial number during the uploading process
(dynamic binding). Assign a password using the "Define password" button to link the use
of a block additionally to the input of a password.
If you want to manually bind the serial number of the CPU or the SIMATIC memory card