OPC Router can be setup with redundant pairs of systems to provide for continued availability in the event of the failure of a system running OPC Router. This short video shows how to setup the redundant heartbeat connection, demonstrates the failover and failback with 2 systems, and how to adjust timeout settings to meet differing user speed of failover needs.
The demo is the full product. When you put an OPC Router project into runtime, it will stop operating after 2 hours and have to be restarted. Purchase of a license will remove the restriction.