Wonderware’s Industrial Application Server provides several methods to ensure data integrity. From having a hot standby available for processing objects with Application Engine Redundancy to local buffering of historian data in case of connection loss to Industrial SQL Server, Wonderware has made system robustness a focal point. In the pursuit of those goals, Wonderware has provided a $RedundantDIObject which allows the user to identify a primary connection to the PLC as well as a backup location – switching between those two sources is automated by the object.
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