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7
Configuring FDL Connections / Programming the SEND/RECEIVE Interface
Addresses Tab − Unspecified FDL Connection
An unspecified FDL connection can be used in two ways:
Connection to a remote station in a different project
You can specify the remote PROFIBUS address and the LSAP for any
destination station. The destination station can be within or outside the current
STEP 7 project.
As long as the remote address is unspecified, no communication is possible on
the FDL connection.
Free layer 2 access
To configure a free layer 2 access, click the appropriate button. The input boxes
for the remote PROFIBUS address and the remote LSAP can then no longer be
written to, since the destination addresses are now specified by the user
program.
A−166
S7-CPs for PROFIBUS Configuring and Commissioning
Release 09/2011
C79000−G8976−C181−05