IEC 62453-309:2022 is available as IEC 62453-309:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
Communication Profile Family 9 (commonly known as HART® ) defines communication profiles based on IEC 61158 5 20 and IEC 61158 6 20. The basic profile CP 9/1 is defined in IEC 61784 1. IEC 62453-309:2022 (EN) provides information for integrating the HART® technology into the FDT standard (IEC 62453-2). This part of the IEC 62453 specifies communication and other services. This document neither contains the FDT specification nor modifies it.