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Scope: Core (OPC-10000-*) All specs

18 result(s) for SourceTimestamp

OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model

8.57 AccessLevelType

writeable, 1 means any StatusCode is writeable). TimestampWrite 6 Indicates if the current SourceTimestamp is writeable (0 means only null timestamps are writeable, 1 means any timestamp value is writeable
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

5.11.4.2 Parameters

shall be an array even if only one element is being written. If the SourceTimestamp or the ServerTimestamp is specified, the Server shall use these values. The Server returns
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

6.6.2.2 RedundantServerSet Requirements

Server is exposing data from a downstream device (PLC, DCS etc.) then the SourceTimestamp and ServerTimestamp reported by all redundant Servers should match as closely as possible. Clients should favour ... SourceTimestamp . ContinuationPoints: Behaviour of continuation points does not change, in that Clients shall be prepared for lost continuation points. Servers in Transparent and HotAndMirrored Redundancy sets shall synchronize continuation points
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.10 DataChangeTrigger

STATUS_VALUE_TIMESTAMP 2 Report a notification if either StatusCode, value or the SourceTimestamp change. If a Deadband filter is specified, this trigger has the same behaviour as STATUS_VALUE
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.11.3 SourceTimestamp

SourceTimestamp The sourceTimestamp is used to reflect the timestamp that was applied to a Variable value by the data source. Once a value has been assigned a source timestamp ... value instance" refers to the value received, independent of its actual value. The sourceTimestamp shall be UTC time and should indicate the time of the last change
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.11.4 ServerTimestamp

Server , each Server applies its own serverTimestamp . This is in contrast to the sourceTimestamp in which only the originator of the data is allowed to apply the sourceTimestamp
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.5 Attributes of DataItems

Server's ability to access/provide the value) and, optionally, a ServerTimestamp and/or a SourceTimestamp - based on the Client's request. See OPC 10000-4 for details on StatusCode
OPC-10000-9 – OPC Unified Architecture - Part 9: Alarms & Conditions

5.3 ConditionVariable

DataType TypeDefinition Modelling Rule Subtype of the BaseDataVariableType defined in 10000-5 . HasProperty Variable SourceTimestamp UtcTime PropertyType Mandatory ConformanceUnits A & C Basic SourceTimestamp indicates the time of the last
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

4.3 Historians and interruption of data collection

breaks, and the historian recovers the subscription after several minutes, it can check the SourceTimestamp of the initial values in the subscription. If the initial value SourceTimestamp matches the last ... stored value SourceTimestamp , then no data was lost and nothing needs to be stored indicating the given HistoricalDataNode 's data collection was interrupted. But if the SourceTimestamp of the initial
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

4.5 Timestamps

settings will be rejected with Bad_TimestampsToReturnInvalid (see OPC 10000-4 ). For HistoricalDataNodes , the SourceTimestamp is used to determine which historical data values are to be returned. The request ... terms of SourceTimestamp but the reply could be in SourceTimestamp , ServerTimestamp or both timestamps. If the reply has the Server timestamp the timestamps could fall outside of the range
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

5.2.2 HistoricalDataConfigurationType

value of True indicates the Server (and this configuration) stores ServerTimestamps in addition to SourceTimestamp . The default is False. The MaxTimeStoredValues is the maximum time period that is available
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

6.2.2 Operation level result codes

TimestampsToReturn the Server does not support. For example requested ServerTimestamp when Server only supports SourceTimestamp . Bad_InvalidArgument One or more arguments are invalid or missing. Bad_AggregateListMismatch The list
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.4.2 DataSetFieldContentMask

DataSetMessage s. If this bit is set, the fields are represented as DataValue . SourceTimestamp 1 The DataValue structure field SourceTimestamp is included in the DataSetMessage s. If this ... fields are represented as DataValue . This bit is ignored if the SourceTimestamp bit is not set. ServerPicoSeconds 4 The DataValue structure field ServerPicoSeconds is included in the DataSetMessage
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.11.5 PubSubDiagnosticsCounterType

reached (0xFFFFFFFF). If the maximum is reached and a new event occurs, the SourceTimestamp of the Value shall be updated, even if the Value does not change. The Property Active
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.3.3.5 Examples

Example for DataSet1 with all configurable JsonDataSetMessageContentMask flags set to false and with SourceTimestamp and StatusCode flags set in the DataSetFieldContentMask . The Status is omitted if the Code ... Status":{"Code":1073741824,"Symbol":"Uncertain"}, "SourceTimestamp":"2021-09-27T11:32:38.349925Z" }, "Temperature": { "Value
OPC-10000-16 – OPC Unified Architecture - Part 16: State Machines

4.4.5 TransitionVariableType

store a Transition that occurred within a StateMachine as a human readable name. The SourceTimestamp for the value specifies when the Transition occurred. This value may also be exposed with
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

6.3.9 IncludeStatus, IncludeSourceTimestamp, and IncludeDictionaryReference Properties

Value" field for the Value of the Variable and a "SourceTimestamp" field for the sourceTimestamp . The DataType of the field shall be UtcTime . If False, the DataType ... representing the Variable shall contain no "SourceTimestamp" field. The IncludeDictionaryReference Property is a Boolean indicating whether the HasDictionaryEntry References of the serialized Variables are included into the SerializationValue
OPC-10000-110 – OPC Unified Architecture - Part 110: Asset Management Basics

9.2 Overall health status of an asset

DeviceType does implement 2: IDeviceHealthType. Figure 3 - Examples of assets providing health status The SourceTimestamp of the 2: DeviceHealth Variable provides the time when the asset entered that health status ... this might not always be possible, a Client shall be aware that the SourceTimestamp is not always the time when the asset switched the health status