Technical data

Defining Symbols
8.6 Entering Shared Symbols
Programming with STEP 7
210 Manual, 05/2010, A5E02789666-01
8.6.5 Exporting and Importing Symbol Tables
You can export the current symbol table to a text file in order to be able to edit it with any text
editor.
You can also import tables created using another application into your symbol table and continue to
edit them there. The import function can be used, for example, to include in the symbol table
assignment lists created with STEP5/ST following conversion.
The file formats *.SDF, *.ASC, *.DIF, and *.SEQ are available to choose from.
Rules for Exporting
You can export the whole symbol table, a filtered subset of the symbol table, or rows selected in
the table view.
The properties of symbols that you can set using the menu command Edit > Special Object
Properties are not exported.
Rules for Importing
• For frequently used system function blocks (SFBs), system functions (SFCs)and organization
blocks (OBs)predefined symbol table entries already exist in the file
...\S7DATA\SYMBOL\SYMBOL.SDF which you can import as required.
• The properties of symbols that you can set using the menu command Edit > Special Object
Properties are not taken into consideration when exporting and importing.