Siemens SIMATIC NET SCALANCE X-200RNA Operating Instructions Manual page 24

Network topologies and redundancy
4.2 HSR
Transition between HSR and PRP (redundant)
Figure 4-3
The devices of the SCALANCE X-200RNA product line allow a link with a PRP network. This
coupling is in redundant form, as described in standard IEC62439-3. Two SCALANCE X-200RNA
devices are required. One device is connected with the PRP network LAN A, the other with LAN B.
This means complete communication is still ensured even if one transition point fails. SANs
connected without RedBox to the decoupled PRP network are an exception from this rule.
24
Basic diagram of the redundant HSR-PRP link
Operating Instructions, 04/2022, C79000-G8976-C342-07
SCALANCE X-200RNA