Tag values from OPC UA Servers do not update or have bad quality

Possible cause and solution:
  • The
    FactoryTalk Linx
    OPC
     UA Connector or
    OPC
     UA Server does not have network connectivity.
    Verify network continuity between the
    FactoryTalk Linx
    OPC
     UA Connector workstation and
    OPC
     UA Server.
  • The
    OPC
     UA Server software is no longer running, has crashed, or its host computer is shut down or restarting.
    Verify the host PC is running. Use
    Windows
     Services to determine if the
    OPC
     UA Server software is operating normally.
  • The
    OPC
     UA Server is unable to connect to one or more data sources.
    Verify network continuity between the
    OPC
     UA Server and each data source.
    Verify the data source is running.
    View the
    FactoryTalk
     Diagnostic Log for one or more communication errors. Use the failing
    OPC
     UA node ID or tag to identify the affected host data source.
  • The
    FactoryTalk Linx
    OPC
     UA Connector has an outdated list of tag names. In
    FactoryTalk Diagnostics
     Log
    , a data error appears for each node ID the
    FactoryTalk Linx
    OPC
     UA Connector cannot access. Error codes may include "Bad", "BadCommunicationError", "BadDeviceFailure", "BadTimeout", "UncertainInitialValue", or "UncertainSensorNotAccurate". Multiple tags may not update or may show bad quality even if only one tag name is outdated.
    Refresh tag names for the
    OPC
     UA Server and restart the OPC UA Connector service:
    1. In
      Explorer
      , right-click an existing
      FactoryTalk Linx
      OPC
       UA Connector, then select
      Properties
      .
    2. In
      FactoryTalk Linx
      OPC
       UA Connector
      , select
      OPC UA Servers
      .
    3. Highlight an
      OPC
       UA Server, then select
      Refresh Tag Names
      .
    4. In
      Refresh Tag Names
      , select
      Continue with reset
      .
      IMPORTANT:
      The FactoryTalk Linx OPC UA Connector service restarts.
      FactoryTalk clients do not receive OPC UA tag values from any OPC UA Server connected to this FactoryTalk Linx OPC UA Connector until the reset is complete.
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal