1761 Wrong presentation of a HSR-PRP coupling device
Created: 26 Feb 2021
Paragraph: Figure 102 – Coupled PRP and HSR networks
On the diagram, a HSR-PRP coupling device is shown as a single 4-port device (called "COUPLER"). Such a 4-port device is not defined in the IEC 62439-3(:2016) standard; instead, 62439-3 defines a HSR-PRP coupler as a 3-port device, where 2 ports are connected to an HSR ring and the 3-rd port is connected to one of the PRP LAN's - see IEC 62439-3:2016, chapter 18.104.22.168, Figure 16.
As shown in IEC 62439-3:2016, chapter 22.214.171.124, Figure 16, two 3-port HSR-PRP coupling devices are required to connect a PRP network to a HSR ring.
Tissue DB v. 126.96.36.199