8 Alarm Metrics 
8.3 AlarmRateVariableType 
This variable type provides a unit field for the rate for which the Alarm diagnostic applies.
Table 141 – AlarmRateVariableType Definition
| Attribute | Value |
|---|---|
| BrowseName | AlarmRateVariableType |
| IsAbstract | False |
| ValueRank | Scalar |
| DataType | Double |
| References | NodeClass | BrowseName | DataType | TypeDefinition | ModellingRule |
|---|---|---|---|---|---|
| HasProperty | Variable | Rate | UInt16 | PropertyType | Mandatory |
| ConformanceUnits | |||||
| A & C Alarm Metrics |
Rate – is the number of minutes over which the item is calculated.