Communication Profile Family 1 (commonly known as FOUNDATIONTM Fieldbus1) defines communication profiles based on IEC 61158-2, Type 1, IEC 61158-3-1, IEC 61158-4-1, IEC 61158-5-5, IEC 61158-5-9, IEC 61158-6-5, and IEC 61158-6-9. The basic profiles CP 1/1 (FF H1) and CP 1/2 (FF HSE) are defined in IEC 61784-1. This part of IEC 62453 provides information for integrating the FOUNDATIONTM Fieldbus (FF) protocol into the FDT standard (IEC 62453-2). The standard describes communication definitions, protocol specific extensions and the means for block (e. g. transducer, resource or function blocks) representation. The new protocol specific definitions are based on FF-specifications for H1 and HSE protocols. Furthermore, the definitions contain information that is needed by systems to configure FF devices. The scope is limited to FOUNDATIONTM Fieldbus device and system specific definitions.