ABB 650 series User Manual

12.2.2 Application
GUID-172BA5D7-6532-4B0D-8C1D-2E02F70B4FCB v1
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-US
Figure 106: Parallel Redundancy Protocol (PRP)
1MRK 511 423-UEN A Section 12
Ethernet-based communication
Bay control REC650 2.2 IEC 231
Application manual

ABB 650 series Specifications

General

Brand	ABB
Model	650 series
Category	Controller
Language	English