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5.2 OPC UA ObjectTypes ToC Previous Next

5.2.3 StackLevelType ToC Previous Next index

readme_files/image005.png Figure 3 StackLevelType overview

The StackLevelType contains the information relevant to a stacklight operating as a level meter. The whole stack is controlled by a percentual value. In Figure 3, a graphical overview is given. It is formally defined in Table 16.

Table 16 – StackLevelType Definition

Attribute Value        
BrowseName StackLevelType        
IsAbstract False        
Description Contains information relevant to a stacklight operating as a level meter. The whole stack is controlled by a percentual value.        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the BaseObjectType defined in OPC 10000-5 i.e. inheriting the InstanceDeclarations of that Node.          
0:HasComponent Variable LevelPercent 0:Float 0:AnalogItemType M
0:HasComponent Variable DisplayMode LevelDisplayMode 0:BaseDataVariableType M

LevelPercent shows the percentual value the stacklight is representing. The mandatory EURange Property of the Variable indicates the lowest and highest value and thereby allows to calculate the percentage represented by the value. The lowest value is interpreted as 0 percent, the highest is interpreted as 100 percent.

DisplayMode indicates in what way the percentual value is displayed with the stacklight.

The InstanceDeclarations of the StackLevelType have the Attribute values defined in Table 17.

Table 17 – StackLevelType Attribute values for child Nodes

Source Path Value Description
LevelPercent - Shows the percentual value the stacklight is representing. The mandatory EURange Property of the Variable indicates the lowest and highest value and thereby allows to calculate the percentage represented by the value. The lowest value is interpreted as 0 percent, the highest is interpreted as 100 percent.
DisplayMode - Indicates in what way the percentual value is displayed with the stacklight.

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