Technical data

Defining Symbols
8.6 Entering Shared Symbols
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 207
8.6.3 Entering Multiple Shared Symbols in the Symbol Table
Opening the Symbol Table
There are a number of ways of opening a symbol table:
• Double-click the symbol table in the project window.
• Select the symbol table in the project window and select the menu command Edit > Open
Object.
The symbol table for the active program is displayed in its own window. You can now create
symbols or edit them. When you open a symbol table for the first time after it was created, it is
empty.
Entering Symbols
To enter new symbols in the symbol table, position the cursor in the first empty row of the table and
fill out the cells. You can insert new empty rows before the current row in the symbol table using
the menu command Insert > Symbol. You can copy and modify existing entries using the
commands in the Edit menu. Save and then close the symbol table. You can also save symbols
that have not been completely defined.
Sorting Symbols
The data records in the symbol table can be sorted alphabetically according to symbol, address,
data type, or comment.
You can change the way the table is sorted by using the menu command View > Sort to open a
dialog box and define the sorted view.
Filtering Symbols
You can use a filter to select a subset of the records in a symbol table.
Using the menu command View > Filter you open the "Filter" dialog box.
You can define criteria that the records must fulfill in order to be included in the filtered view. You
can filter according to:
• Symbol names, addresses, data types, comments
• Symbols with operator control and monitoring attribute, symbols with communication
properties, symbols for binary variables for messages (bit memory or process input)
• Symbols with the status "valid," "invalid (non-unique, incomplete)"
The individual criteria are linked by an AND operation. The filtered records start with the specified
strings.
If you want to know more about the options in the "Filter" dialog box, open the context-sensitive
online help by pressing F1.