...
Configure assembly instance ID
Choose "Assembly" in the Navigation Area of the Modular Generic Adapter now. Select the Module “Slot<1> 1734-IB8”.
Now the Connection Path has to be filled in. The Connection Path is described in the EDS here:
Switch back to EZ-EDS, select “Connection1” in the left tree view.
Click the Button "Decode Path". A new Window will pop up. Select decimal format in this dialog and the instance ID can be read out.