This part of the IEC 62453-51-xy series@ which is a Technical Report@ provides information for integrating the HART?1 technology into the COM-based implementation of FDT interface specification (IEC TR 62453-41). This part of IEC 62453 specifies the implementation of communication and other services based on IEC 62453-309. This document neither contains the FDT specification nor modifies it. 1 HART ? is the trade name of a product supplied by HART Communication Foundation. This information is given for convenience of users of this document and does not constitute an endorsement by IEC of the product named. Equivalent products may be used if they can be shown to lead to the same results.