The AirnetTypeis the representation of an Airnetand provides both Objectsfor Quantitiesand FunctionalGroups. It is illustrated in Figure 19and formally defined in Table 17.

image025.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:TopologyElementTypedefined 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 ObjectAmbient provides Quantitiesfor the ambient air conditions at an Airnet. Of the optional Variablesof the FluidQuantitiesType only AbsolutePressure, DewPoint, RelativeHumidity, and Temperature are available.

The optional FolderComponentsprovides Foldersfor organizing Componentsconnected to the Airnet. Usually, the Componentsare grouped by their DeviceClassand shall be referenced by using the Organizes ReferenceType. The concrete instance of a Componentshall be instantiated in the Components Folderof the CASType instance.

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

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Figure 20– Airnet Components Example

The optionalFunctionalGroupConfiguration provides Variablesfor configuring the behavior of an Airnet.

The optional ObjectElectricalCircuit provides Quantitiesfor the electrical ports of an Airnet.

The mandatoryFunctionalGroupIdentification provides Propertiesto identify an Airnet.

The optionalFunctionalGroupOperational provides Variablesfor process data used during normal operation of an Airnet, such as measurements, efficiencies, and states.

The optional ObjectProcessFluidCircuit provides static design information about the process fluid as well as Quantitiesfor the process fluids inlets, outlets, and delta of an Airnet.

The InstanceDeclarationsof the AirnetTypehave additional Attributesdefined 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.