Displaying/Canceling The Access Protection; Displaying And Editing Symbol Tables - Siemens SINUMERIK 840D sl Operating Manual

Ladder Viewer and Ladder add-on (828D only)

23.14 Displaying/canceling the access protection

23.14 Displaying/canceling the access protection
You can password protect your program organizational units (POUs) in the PLC 828
programming tool. This prevents other users from accessing this part of the program. This
means that it is invisible to other users and is encrypted when it is downloaded.
A lock symbol is used to show a password-protected POU in the block overview and in the
ladder diagram.
Procedure
23.15

Displaying and editing symbol tables

You can display the symbol tables that are used to obtain an overview of the global
operands available in the project - which you can then edit.
The name, address and possibly also a comment is displayed for each entry.
Procedure
800
1. The ladder diagram display (LAD) is opened.
2 Select the relevant program organizational unit (POU) in the overview
and press the "Program block" softkey.
3. Press the "Protection" softkey.
The "Protection" window appears.
4. Enter your password and press the "Accept" softkey.
1. Ladder add-on tool is opened.
2. Press the "Symbol table" and the "Select sym. table" softkeys.
The list with the symbol table entries is displayed.
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
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