Redundant AOS-Pair - OPCUA Services are deployed on both machines Is there any option to switch in failover case to OPCUA-Server on Partner node

Question

Hello everybody, 
 I&rsquo;m searching for a solution and have no idea:

Redundant AOS-Pair: 
 Both AOSes are configured as OPCUA-Server 
 Communication between SAP PCo and the node with active engines 
 In case of a failover, in worst case AOS1 goes down, is there any option to switch this communication to OPCUA Server on AOS2?

Please finde attached a schema. 
 
 I know AppEngine Failover is decoupled from PCS. I have no idea how to support my customer in that case. 
 Maybe, I have to recommend to use another interface of SAPPCo, e.g. Webservice. So a RDI- Object could become the solution&hellip; 
 
 Thanks in advance for any idea! 
 Stephanie