Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 219)

L-force | PLC Designer
Symbol configuration
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DMS 4.1 EN 03/2011 TD29 217
9 Symbol configuration
The Symbol configuration is used to create symbols, provided with specific access
rights, via which project variables can be accessed from external, for example by an
OPC Server. The description of the symbols (symbol information) will be available in a
xml-file (symbol file) in the project directory, and it will be downloaded to the PLC
together with the application.
Creating a symbol configuration:
In order to get the symbol configuration functionality available, the Symbol
configuration object must be added to the application in the device tree via the Add
Object command. This will automatically include the IECVarAccess.library in the Library
Manager.
The variables to be exported as symbols can be defined either in the Symbol
configuration editor or via pragmas, which are to be added at the declaration of the
variables. Another possibility is provided for example by the SFC Editor: Here in the
element properties the implicitly created element flags can be defined to get exported
to the Symbol configuration.
The name of a symbol created by the symbol configuration is composed according to
the following syntax:
..
for example "MyApplication.PLC_PRG.a" or "MyApplication.GVL.a"
For the purpose of accessing the variable, the symbol name must be specified
completely.