Copy Protection; Downloading The Elements Of Your Program - Siemens SIMATIC S7 System Manual

5.6

Copy protection

Copy or "know-how" protection allows
you to prevent one or more code
blocks (OB, FB, or FC) in your
program from unauthorized access.
You create a password to limit
access to the code block.
When you configure a block for
"know-how" protection, the code
within the block cannot be accessed
except after entering the password.
To copy-protect the block, select the
"Know how protection" command
from the "Edit" menu. You then enter
a password that allows access to the
block.
The password-protection prevents unauthorized reading or modification of the code block.
Without the password, you can read only the following information about the code block:
● Block title, block comment, and block properties
● Transfer parameters (IN, OUT, IN_OUT, Return)
● Call structure of the program
● Global tags in the cross references (without information on the point of use), but local
5.7

Downloading the elements of your program

You can download the elements of your project from the programming device to the CPU.
When you download a project, the CPU stores the user program (OBs, FCs, FBs and DBs)
in permanent memory.
You can download your project
from the programming device to
your CPU from any of the
following locations:
 "Project tree": Right-click the
 "Online" menu: Click the
 Toolbar: Click the "Download
S7-1200 Programmable controller
System Manual, 11/2009, A5E02486680-02
tags are hidden
program element, and then
click the context-sensitive
"Download" selection.
"Download to device"
selection.
to device" icon.
Programming concepts
5.6 Copy protection
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