7 OPC UA ObjectTypes ToC Previous Next

7.8 ConditionBasedMaintenanceType ObjectType Definition ToC Previous Next

The ConditionBasedMaintenanceType provides Variables that are used for condition based maintenance and 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:FunctionalGroupType defined 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 InstanceDeclarations of the ConditionBasedMaintenanceType have additional Attributes defined in Table 24. The Variables and the associated Descriptions are 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
 

Previous Next