The ConditionBasedMaintenanceTypeprovides Variablesthat are used for condition based maintenanceand is formally defined in Table 23.

Table 23– ConditionBasedMaintenanceType Definition

Attribute

Value

BrowseName

ConditionBasedMaintenanceType

IsAbstract

False

References

Node Class

BrowseName

DataType

TypeDefinition

Other

Subtype of the 2:FunctionalGroupTypedefined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node.

0:HasComponent

Variable

Availability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

Durability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

ExpectedReliability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

InstantaneousAvailability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

IntrinsicMaintainability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

IntrinsicReliability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

Maintainability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

OperationalReliability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

ProductionBasedAvailability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

Reliability

0:Double

0:BaseAnalogType

O, RO

0:HasComponent

Variable

TimeBasedAvailability

0:Double

0:BaseAnalogType

O, RO

The InstanceDeclarationsof the ConditionBasedMaintenanceType have additional Attributesdefined in Table 24. The Variablesand the associated Descriptionsare based on the standards ISO 13372 and DIN EN 13306.

Table 24– ConditionBasedMaintenanceType Attribute values for child Nodes

BrowsePath

Value Attribute

Description Attribute

Availability

Probability that a machine will, when used under specified conditions, operate satisfactorily and effectively

Availability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

Durability

Actual reliability of an item considering operating modes, operating conditions and possible preventive maintenance actions carried out

Durability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

ExpectedReliability

Reliability of an item determined by design and manufacture under expected conditions of operation and maintenance

ExpectedReliability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

InstantaneousAvailability

Probability that an item is in a state to perform as required at a given instant, under given conditions, assuming that the necessary external resources are provided

InstantaneousAvailability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

IntrinsicMaintainability

Maintainability of an item determined by the design under expected conditions of maintenance and logistic support

IntrinsicMaintainability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

IntrinsicReliability

Reliability of an item determined by design and manufacture under expected conditions of operation assuming that no preventive maintenance task is carried out, excepting routine maintenance

IntrinsicReliability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

Maintainability

Ability of a machine or part of a system to be retained in, or restored to, a state in which it can perform the required function(s)

Maintainability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

OperationalReliability

Actual reliability of an item considering operating modes, operating conditions and possible preventive maintenance actions carried out

OperationalReliability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

ProductionBasedAvailability

Ratio of actual production to required production, or any other reference level, over a specified period of time

ProductionBasedAvailability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

Reliability

Probability that a machine will perform its required functions without failure for a specified time period when used under specified conditions

Reliability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent

TimeBasedAvailability

During a given period of time, percentage of the time during which an item was able to perform when required

TimeBasedAvailability

0:EngineeringUnits

NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact

UnitId: 20529

DisplayName: %

Description: percent