Creating an I-Device
Using the I-Device functionality, a controller and a device interface can be operated simultaneously via a physical interface. The CCAT -M930 interface and TwinCAT version 4024.13 or higher are required
A Multiple Protocol Handler must be used for project planning. 
The CCAT interface must be assigned as the adapter.
The PROFINET CCAT controller and device are then projected. For both, the assignment must be made using the same adapter reference to the Multiple Protocol Handler.
For both protocols the I-Device functionality has to be enabled. The following selection is available on the controller.
This enables the controller as a device at the same time.
Here you can optionally define the hardware properties, e.g. what is signaled via the fieldbus LED. By default this is the controller diagnostics, although it is possible to change to device. This option also affects the port properties (e.g. LLDP). When enabled, the higher-level controller can parameterize the properties of the physical interface.
The I-Device must still be enabled on the Device protocol.
If several PROFINET Device protocols exist in the project, coupling to the corresponding I-Device Controller takes place.
Virtual MAC addresses are assigned on the device side (including the first box). When using multiple I-Device configurations in the same network, the uniqueness of the virtual MAC addresses must be ensured. The last digit of the MAC can be edited for this purpose.