IEC 62453-309:2016 provides information for integrating the HART® technology into the FDT standard (IEC 62453-2). It specifies communication and other services. This second edition cancels and replaces the first edition published in 2009, and constitutes a technical revision. The main changes are provided in order to provide improved support for updates of the HART protocol (see 6.7 and the updated datatypes in Clauses 9, 10, and 12) and to support introduction of the technology according to IEC 62453-42.

This publication is to be read in conjunction with IEC 62453-2:2009.