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7.4 AirnetType ObjectType Definition ToC Previous Next

The AirnetType is the representation of an Airnet and provides both Objects for Quantities and FunctionalGroups. It is illustrated in Figure 19 and formally defined in Table 17.

readme_files/image024.png Figure 19 – AirnetType Illustration

Table 17 – AirnetType Definition

Attribute Value        
BrowseName AirnetType        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the 2:TopologyElementType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node.          
0:HasComponent Object Ambient   FluidQuantitiesType O
0:HasComponent Object 4:Components   AirnetComponentsType O
0:HasComponent Object 2:Configuration   AirnetConfigurationType O
0:HasComponent Object ElectricalCircuit   ElectricalCircuitType O
0:HasComponent Object 2:Operational   AirnetOperationalType O
0:HasComponent Object ProcessFluidCircuit   FluidCircuitType O
           
The following nodes override nodes added by the 2:TopologyElementType          
0:HasComponent Object 2:Identification   CASIdentificationType M

The optional Object Ambient provides Quantities for the ambient air conditions at an Airnet. Of the optional Variables of the FluidQuantitiesType only AbsolutePressure, DewPoint, RelativeHumidity, and Temperature are available.

The optional Folder Components provides Folders for organizing Components connected to the Airnet. Usually, the Components are grouped by their DeviceClass and shall be referenced by using the Organizes ReferenceType. The concrete instance of a Component shall be instantiated in the Components Folder of the CASType instance.

Figure 20 shows an example on how to instantiate the FunctionalGroup Components for an Airnet in the AddressSpace of an OPC UA Server.

readme_files/image025.png Figure 20 – Airnet Components Example

The optional FunctionalGroup Configuration provides Variables for configuring the behavior of an Airnet.

The optional Object ElectricalCircuit provides Quantities for the electrical ports of an Airnet.

The mandatory FunctionalGroup Identification provides Properties to identify an Airnet.

The optional FunctionalGroup Operational provides Variables for process data used during normal operation of an Airnet, such as measurements, efficiencies, and states.

The optional Object ProcessFluidCircuit provides static design information about the process fluid as well as Quantities for the process fluids inlets, outlets, and delta of an Airnet.

The InstanceDeclarations of the AirnetType have additional Attributes defined in Table 18.

Table 18 – AirnetType Attribute values for child Nodes

Source Path Value Attribute Description Attribute
Ambient   Measurements and calculations of ambient air at the topology element.

   Ambient
   AbsolutePressure
   
  Measured or calculated actual absolute pressure of the environment in which the component, piping or system is working.

   Ambient
   DewPoint
   
  Measured or calculated actual dew point of the environment in which the component, piping or system is working.

   Ambient
   RelativeHumidity
   
  Measured or calculated actual relative humidity of the environment in which the component, piping or system is working.

   Ambient
   Temperature
   
  Measured or calculated actual temperature of the environment in which the component, piping or system is working.
4:Components   Organizes components assigned to the airnet.
2:Configuration   Configure the behavior of the topology element.
ElectricalCircuit   Measurements and calculations of the electrical ports and delta of the topology element.
2:Identification   Identification properties of the topology element.
2:Operational   Data for normal operation of the topology element.
ProcessFluidCircuit   Measurements and calculations of the process fluid ports and delta of the topology element.

   ProcessFluidCircuit
   FluidType
   
  Enumeration of possible process fluid types.

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