Expand failover functionality in Schneider-Electric Foxboro fxbais interface
Failover mechanism in fxbais (Schneider-Electric PI interface for Windows) doesn't lead to a failover when the primary interface node loses connection to the network (f.i. when its NIC fails). It just starts buffering and sends its data after the connection is back again.
It keeps on updating its watchdog CALC block on IA, so no take over is initiated.
Some applications require "near real time" data, so if it comes in a day later, it's not very useful.
In such a case, the secondary interface node could perfectly take over the data collection.
This would be well met if the interface could support a UniInt Phase 2 failover mechanism. In a similar vein, this would also enable interface failover when the primary loses contact with its data archive, but the secondary is able to maintain its connection to a data archive.