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

18 result(s) for Timestamp

OPC-10000-2 – OPC Unified Architecture - Part 2: Security Model

5.1.4 Message spoofing

Message s. Additionally, Message s will always contain a valid SessionId , SecureChannelId , RequestId and Timestamp as well as the correct sequence number. OPC UA when operating as part ... providing the ability to sign messages. Messages can also contain a valid PublisherId , DataSetClassId , timestamp information, network message number and sequence number, which further restricts Message spoofing. In session-less
OPC-10000-2 – OPC Unified Architecture - Part 2: Security Model

5.1.6 Message replay

PubSub does allow the disabling of fields in a message. The disabling of the Timestamp , network message number and sequence number, could allow replay attacks. If a replay attack
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

5.2 Service request and response header

RequestHeader structure is defined in 7.32 and contains common request parameters such as authenticationToken , timestamp and requestHandle . The ResponseHeader structure is defined in 7.33 and contains common response parameters such
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.39 TimestampsToReturn

TimestampsToReturn The TimestampsToReturn is an enumeration that specifies the Timestamp Attributes to be transmitted for MonitoredItems or Nodes in Read and HistoryRead . The values of this parameter are defined ... Table 180 . Table 180 - TimestampsToReturn values Name Value Description SOURCE 0 Return the source timestamp. SERVER 1 Return the Server timestamp. BOTH 2 Return both the source and Server timestamps
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.44 ViewDescription

NodeId NodeId of the View to Query . A null value indicates the entire AddressSpace. timestamp UtcTime The time date desired. The corresponding version is the one with the closest previous ... creation timestamp. Either the Timestamp or the viewVersion parameter may be set by a Client , but not both. If ViewVersion is set this parameter shall be null. viewVersion UInt32
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

B.2.2 Querying Views

querying a past version of the AddressSpace. Clients may specify a ViewVersion or a Timestamp in a Query to access past versions of the AddressSpace . OPC UA Query is complementary
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.2.17 DataValue

present if the StatusCode bit in the EncodingMask is False. SourceTimestamp DateTime The source timestamp associated with the value. Not present if the SourceTimestamp bit in the EncodingMask is False ... present if the SourcePicoseconds bit in the EncodingMask is False. If the source timestamp is missing the Picoseconds are ignored. ServerTimestamp DateTime The Server timestamp associated with the value
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

4.4 Modification of Historical Data/Events

that in a single event stream there can be many Events with the same Timestamp . Events need to be identified by their EventId. The EventId is generated as part
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.1.4 NetworkMessageContentMask

PayloadHeader 6 The PayloadHeader is included in the NetworkMessages . Timestamp 7 The sender timestamp is included in the NetworkMessage s. PicoSeconds 8 The sender PicoSeconds portion of the timestamp ... included in the NetworkMessage s. This flag is ignored if the Timestamp flag is not set. DataSetClassId 9 The DataSetClassId is included in the NetworkMessage s. The NetworkMessage can only
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.3.2 DataSetMessageContentMask

formally defined in Table 101 . Table 101 - UadpDataSetMessageContentMask Values Value Bit No. Description Timestamp 0 If this flag is set, a timestamp shall be included in the DataSetMessage header. PicoSeconds ... this flag is set, a PicoSeconds timestamp field shall be included in the DataSetMessage header. This flag is ignored if the Timestamp flag is not set. Status 2 If this
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.4.2 NetworkMessage layout

configuration is SIGN or SIGNANDENCRYPT , this flag shall be set. Bit 5: Timestamp enabled Bit 6: PicoSeconds enabled This bit shall be false if the Timestamp bit is false ... DataSetMessages is known from the DataSetReader configuration for the combination of WriterGroupId and NetworkMessageNumber . Timestamp DateTime The time the NetworkMessage was created. The Timestamp shall be omitted
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.5.4 DataSetMessage header

sender and the receiver shall skip messages when reserved values are received. Bit 4: Timestamp enabled Bit 5: PicoSeconds included in the DataSetMessage header This bit shall be false ... Timestamp bit is false. Bit 6: Reserved Bit 7: Reserved for further extended flag fields Reserved bits shall be set to false by the Publisher and Subscribers shall skip messages
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.5.5 Status

mandatory. PublisherId String The Publisher that sent the message. This value is mandatory. Timestamp UtcTime When the message was sent to the Middleware . Mandatory if IsCyclic=TRUE. The field ... goes offline. The status message from the Message Oriented Middleware does not contain the Timestamp . If IsCyclic is set to TRUE the Publisher only reports when it is Operational
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.1.4 Header layout for NetworkMessages

DataType UInt64 Bit 3: DataSetClassId enabled = 0 Bit 4: SecurityHeader enabled = 0 Bit 5: Timestamp enabled = 0 Bit 6: PicoSeconds enabled = 0 Bit 7: ExtendedFlags2 enabled = 0 PublisherId UInt16
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.2.4 Header layout for NetworkMessages

DataType UInt64 Bit 3: DataSetClassId enabled = 0 Bit 4: SecurityHeader enabled = 0 Bit 5: Timestamp enabled = 0 Bit 6: PicoSeconds enabled = 0 Bit 7: ExtendedFlags2 enabled = 0 PublisherId UInt64 Configured
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.2.7 Header layout for DataSetMessages

shall consist of the following fields according to this header layout: DataSetFlags1 DataSetFlags2 DataSetMessageSequenceNumber Timestamp Status MinorVersion Additional remarks: Fields can use any encoding All types of DataSetMessages (Data ... DataSetFlags2 Byte Bit range 0-3: UADP DataSetMessage type <anything> Bit 4: Timestamp enabled = 1 Bit 5: PicoSeconds enabled = 0 (not included in the DataSetMessage header) DataSetMessageSequenceNumber UInt16
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

D.3.2 Header layout for NetworkMessages

DataSetClassId enabled = 1 Bit 4: SecurityHeader enabled configurable (default=1) Bit 5: Timestamp enabled = 0 Bit 6: PicoSeconds enabled = 0 Bit 7: ExtendedFlags2 enabled = 0 PublisherId UInt64 Configured value
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

D.3.4 Header layout for DataSetMessages

Data Delta Frame Shall be 0011 for a Keep Alive Bit 4: Timestamp enabled = 0 Bit 5: PicoSeconds enabled = 0 (not included in the DataSetMessage header) For a description