ABB REL650 series, Applications Manual, Page: 472 / 516

16.5 Application
Parallel redundancy protocol status (PRPSTATUS) 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.
PRPSTATUS provides redundant communication over the station bus running IEC
61850-8-1 protocol. The redundant communication uses port L1_A and L1_B on the
COM3 module.
Switch A Switch B
1 2
Data Data
Data
Data
IEC13000003-1-en.vsd
IED
PRPSTATUS
1 2
COM03
A
B
Duo
Redundancy
Supervision
Station Control System
IEC13000003 V1 EN
Figure 220: Redundant station bus
Section 16
1MRK 506 334-UUS A
Station communication
466
Application manual