Toshiba GR200 Series Instruction Manual page 1173

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Redundant LAN (PRP/HSR operation)

The user can allow the IED operate in the redundant LAN communication (IEC 62439-3). To

operate, the user should set either PRP or HSR for scheme switch [RedundantMode].

'Parallel redundancy protocol (PRP)' is designed for double LAN networks in order to construct

high availability automation networks. Figure 11.2-5 shows an IED (i.e., Source, IED1 with

Port A and Port B†) and a server (i.e., Destination, Substation computer with Port A and Port

B). They are connected through LAN_A and LAN_B. For duplicating data, the IED have Link

redundancy entity (LRE) so that the IED can transfer data with A-Frame packet and B-Frame

packet at the same time. At the destination, either frames being arrived later is removed.

Substation computer

Figure 11.2-5 PRP example for redundant LAN_A and LAN_B with DANP

†Note: For the locations about the LAN module, see Chapter

Signal processing and communication modules

‡Note: IED3 and Operator workstation (connected with singly attached node) can join

the network with Redundancy boxes (RedBox).

'High-availability Seamless redundancy (HSR)', for the ring topology, is designed to achieve

high reliability communication. Figure 11.2-6 illustrates IEDs connected over the ring LAN.

As doubly ports (Port A and Port B) are embedded in an IED, the IED can transfer the data

packet (A-Frame and B-Frame) for the destination over the ring LAN.

Technical description:

6F2S1915 (0.46)

GRZ200 (Soft 031 & 032)