Communication Profile Family 1 (commonly known as FOUNDATION 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 FOUNDATION 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 Low speed version of FF (H1) and High Speed Ethernet (HSE) protocols. Furthermore, the definitions contain information that is needed by systems to configure FF devices. The scope is limited to FOUNDATION Fieldbus device and system specific definitions.