66   uuid(01B7FC45-D890-4300-A177-D85A466BD075),
    69   helpstring(
"IFieldbuses Interface"),
    70   pointer_default(unique)
    79   [propget, id(DISPID_VALUE), helpstring(
"property Item")] HRESULT 
Item([in] VARIANT masterName, [out, retval] 
IFieldbus** fieldbus);
 Definition of the IFieldbuses interface which gives access to the collection of IFieldbus interfaces...
IFieldbus Item([in] VARIANT masterName)
This property returns a IFieldbus object given by the name of the fieldbus master. 
Definition of the IFieldbus interface which gives access to the data of a single fieldbus.