Beckhoff EL72 1-901 Series Manual page 84

Commissioning
Fig. 85: EtherCAT device properties(TwinCAT 2): click on „Compatible Devices..." of tab "Adapter"
TwinCAT 3: the properties of the EtherCAT device can be opened by double click on "Device .. (EtherCAT)"
within the Solution Explorer under "I/O":
After the installation the driver appears activated in the Windows overview for the network interface
(Windows Start → System Properties → Network)
Fig. 86: Windows properties of the network interface
A correct setting of the driver could be:
84 Version: 1.9 EL72x1-901x