Dummies are no real products, but can be inserted into ETS projects as placeholders for KNX communication partners without ETS product data e.g. visualization systems. This served mainly the purpose of assigning group addresses and thus let ETS generate correct filter tables.
As a (better) alternative, ETS 5 (starting from version 5.5) allows to assign group addresses to Bus Interfaces (e.g. tunneling interfaces or USB interfaces) directly, see Interfaces
To create a dummy application program:
·When creating a new application program, select the dummy mask version 0001
·Add as many ComObjects as required, choosing to create a ComObjectRef immediately
·Add a Channel and a ParameterBlock and drag all ComObjectRefs to this ParameterBlock to create the ComObjectRefRefs