ABB Relion 670 Series Applications Manual page 283

1MRK 511 407-UUS Rev. J
Device 1
PhyPortA
PhyPortA
Device 3
IEC09000758 V4 EN-US
Figure 99: Parallel Redundancy Protocol (PRP)
Device 1
PhyPortA
PhyPortB
Device 3
IEC16000038 V1 EN-US
Figure 100: High-availability Seamless Redundancy (HSR)
Phasor measurement unit RES670
Application manual
AP1
PhyPortB
Switch A
PhyPortB
AP1
AP1
PhyPortB
PhyPortA
AP1
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Device 2
AP1
PhyPortA PhyPortB
Switch B
PhyPortA PhyPortB
AP1
Device 4
IEC09000758-4-en.vsd
Device 2
AP1
PhyPortA PhyPortB
PhyPortB PhyPortA
AP1
Device 4
IEC16000038-1-en.vsdx
Section 18
Ethernet-based communication
277