Siemens SIMATIC S7-300 Getting Started page 23

Step Activity
6 Select the "Assignment" tab in the "Properties – PG/PC" dialog box.
Assign the MPI interface parameterization in the PG/PC to the configured interface by clicking "Assign".
7 Complete the configuration by clicking "OK".
CPU 317T-2 DP: Controlling a SINAMICS S120
Getting Started, 03/2008, A5E00480391-03
3.8 7. Step: Configuration of the PG/PC interface
Result
Learning units
23