"A & C Previous Instances Server Facet" Profile

 Description This Facet requires support for Conditions with previous states that still require action on the part of the operator. This Facet builds upon the A&C Base Condition Server Facet. A common use case for this Facet is a safety critical system that requires that all Alarms be acknowledged even if it the original problem goes away and the Alarm returns to the inactive state. In these cases, the previous state with active Alarm is still reported by the Server until the Operator acknowledges it. When a Condition has previous states it will produce events with different Branch identifiers. When previous state no longer needs attention the branch will disappear.
 URI http://opcfoundation.org/UA-Profile/Server/ACPreviousInstances

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Alarms and Conditions
Include  Name Opt.  Description  From Profile  Test Cases
A & C Branch Support for branching of Condition Types and any subtypes, such as AcknowledgeableConditionType and AlarmConditionType etc.   Open