The IOperationCounterType defines counters for the duration of operation. It is formally defined in Table 24.
Table 24 – IOperationCounterType definition
|
Attribute |
Value |
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|
BrowseName |
1:IOperationCounterType |
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|
IsAbstract |
True |
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|
Description |
Interface defining counters for the duration of operation |
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|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
|
Subtype of the 0:BaseInterfaceType defined in OPC 10000-5 |
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|
0:HasProperty |
Variable |
1:PowerOnDuration |
0:Duration |
0:PropertyType |
O |
|
0:HasProperty |
Variable |
1:OperationDuration |
0:Duration |
0:PropertyType |
O |
|
0:HasProperty |
Variable |
1:OperationCycleCounter |
0:UInteger |
0:PropertyType |
O |
|
Conformance Units |
|||||
|
DI OperationCounter Interface |
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PowerOnDuration is the duration the Device has been powered. The main purpose is to determine the time in which degradation of the Device occurred. The details, when the time is counted, is implementation-specific. Companion specifications can define specific rules. Typically, when the Device has supply voltage and the main CPU is running, the time is counted. This can include any kind of sleep mode, but cannot include pure Wake on LAN. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted. The PowerOnDuration is provided as Duration, i.e., in milliseconds or even fractions of a millisecond. However, the Server is not expected to update the value in such a high frequency, but possibly once a minute or once an hour, depending on the application.
OperationDuration is the duration the Device has been powered and performing an activity. This counter is intended for Devices where a distinction is made between switched on and in operation. For example, a drive can be powered on but not operating. It is not intended for Devices always performing an activity like sensors always measuring data. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted. The OperationDuration is provided as Duration, i.e., in milliseconds or even fractions of a millisecond. However, the Server is not expected to update the value in such a high frequency, but possibly once a minute or once an hour, depending on the application.
OperationCycleCounter is counting the times the Device switches from not performing an activity to performing an activity. For example, each time a valve starts moving, is counted. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted.
The child Nodes of the IOperationCounterType have additional Attribute values defined in Table 25.
Table 25 – IOperationCounterType Attribute values for child Nodes
|
BrowsePath |
Description Attribute |
|
PowerOnDuration |
PowerOnDuration is the duration the Device has been powered. The main purpose is to determine the time in which degradation of the Device occurred. The details, when the time is counted, is implementation-specific. Companion specifications can define specific rules. Typically, when the Device has supply voltage and the main CPU is running, the time is counted. This can include any kind of sleep mode, but cannot include pure Wake on LAN. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted. The PowerOnDuration is provided as Duration, i.e., in milliseconds or even fractions of a millisecond. However, the Server is not expected to update the value in such a high frequency, but possibly once a minute or once an hour, depending on the application. |
|
OperationDuration |
OperationDuration is the duration the Device has been powered and performing an activity. This counter is intended for Devices where a distinction is made between switched on and in operation. For example, a drive can be powered on but not operating. It is not intended for Devices always performing an activity like sensors always measuring data. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted. The OperationDuration is provided as Duration, i.e., in milliseconds or even fractions of a millisecond. However, the Server is not expected to update the value in such a high frequency, but possibly once a minute or once an hour, depending on the application. |
|
OperationCycleCounter |
OperationCycleCounter is counting the times the Device switches from not performing an activity to performing an activity. For example, each time a valve starts moving, is counted. This value shall only increase during the lifetime of the Device and shall not be reset when the Device is restarted. |
Table 26 – OperationCounter Mapping to IRDIs specifies the mapping of these Properties to the International Registration Data Identifiers (IRDI) defined in ISO/IEC 11179-6. They should be used if a Server wants to expose a dictionary reference as defined in OPC 10000-19.
Table 26 – OperationCounter Mapping to IRDIs
|
Property |
IRDI |
|
PowerOnDuration |
|
|
OperationDuration |
|
|
OperationCycleCounter |