prEN IEC 62439-1:2026

The IEC 62439 series is applicable to high-availability automation networks based on the ISO/IEC/IEEE 8802-3:2021/Amd 3 (IEEE 802.3) (Ethernet) technology.
This part of the IEC 62439 series specifies
– the common elements and definitions for other parts of the IEC 62439 series;
– the conformance test specification (normative);
– a classification scheme for network characteristics (informative);
– a methodology for estimating network availability (informative);
– the configuration rules, calculation and measurement method for a deterministic recovery time in RSTP.