Application - ABB REC670 Applications Manual

1MRK 511 401-UEN A
19.2.2
Bay control REC670 2.2 IEC
Application manual

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.
Device 1
AP1
PhyPortA PhyPortB
Switch A
PhyPortA PhyPortB
AP1
Device 3
IEC09000758 V4 EN-US
Figure 218: Parallel Redundancy Protocol (PRP)
Ethernet-based communication
Device 2
AP1
PhyPortA PhyPortB
Switch B
PhyPortA
PhyPortB
AP1
Device 4
IEC09000758-4-en.vsd
Section 19
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