ABB REG670 Applications Manual

19.2.2 Application
Dynamic access point diagnostic (RCHLCCH) is used to supervise and assure
redundant Ethernet communication over two channels. This will secure data transfer
even though one communication channel might not be available for some reason
Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy
(HSR) provides redundant communication over station bus running the available
communication protocols. The redundant communication uses two Ethernet ports.
IEC09000758-4-en.vsd
Switch A
AP1
PhyPortB
PhyPortA
AP1
PhyPortA
PhyPortB
AP1
PhyPortB
PhyPortA
AP1
PhyPortA
PhyPortB
Switch B
Device 1
Device 2
Device 3
Device 4
IEC09000758 V4 EN
Figure 318: Parallel Redundancy Protocol (PRP)
1MRK 502 071-UEN - Section 19
Ethernet-based communication
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 677
Application manual

ABB REG670 Specifications

General

Brand	ABB
Model	REG670
Category	Protection Device
Language	English