The Timed Alarm State uses the Duration Alarm (TIMED_ALARMSTATE) calculation type to monitor a list of CVS configurable alarm bits. Whenever the time designated in calcparm2 is reached, the system finds the first time all of the configurable alarm bits listed in calcparm1 were set. If that time meets or exceeds the time specified in calcparm2, the specified alarm bit will be set.
For more information, see Alarm Calculation Types and Point Status Bits.
Note: The Calculation parameters are user-provided.
The following image shows the area of an Analog Alarm Settings page of a PNT Editor with an enabled Timed Alarm State.
Calculation Parameters
Example
The following CVSMetadata.xml excerpt from a sample CygNet Enhanced Point Scheme shows a previously "Unused" configurable status bit now assigned to the "Timed Alarm State" as CONFIG14.
Note: The CygNet Enhanced Point Scheme is available as a separately licensed entity. See Understanding the CVS Metadata File for more information about the elements and attributes that define the CygNet Enhanced Point Scheme.
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<StatusBitDefinition bitid="CONFIG14" desc="Timed Alarm State" displayorder="1021" calcorder="16" calctype="TIMED_ALARMSTATE"> <CalcParameter1 desc="ConfigBits"/> <CalcParameter2 desc="Time"/> </StatusBitDefinition> |
In this example, the Timed Alarm State bit (CONFIG14) is set when CONFIG3 (Low Warning) and CONFIG4 (High Warning) bits (configured in calcparm1 = 001100000000000) have both been set for a minimum of 30 seconds (calcparm2 = 30).
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