OPC Studio User's Guide and Reference
MinimumEffectiveValueAge Property (DAAutoSubscribingParameters)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.Optimization Namespace > DAAutoSubscribingParameters Class : MinimumEffectiveValueAge Property
The minimum effective value age in the Read request for it to be considered in auto-subscribing.
Syntax
'Declaration
 
<DataMemberAttribute()>
<ValueLimitsAttribute(1, 2147483647)>
Public Property MinimumEffectiveValueAge As Integer
'Usage
 
Dim instance As DAAutoSubscribingParameters
Dim value As Integer
 
instance.MinimumEffectiveValueAge = value
 
value = instance.MinimumEffectiveValueAge
[DataMember()]
[ValueLimits(1, 2147483647)]
public int MinimumEffectiveValueAge {get; set;}
[DataMember()]
[ValueLimits(1, 2147483647)]
public:
property int MinimumEffectiveValueAge {
   int get();
   void set (    int value);
}

Property Value

The default value of this property is 100.

Exceptions
ExceptionDescription

The value of an argument is outside the allowable range of values as defined by the invoked method.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

Zero or low value ages have very little chances of cache hit with any subscription update rate.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also