Failed Writes

Description
Description This counter indicates the number of failed write requests from the current OPC UA client to the FactoryTalk Linx Gateway OPC UA server. Failed write requests occur when the client attempts to update or write data to the server but encounters errors or exceptions during the process. The main reasons for failed write requests are:
  1. Unsupported Tags: The client attempts to read tags that are not supported by FactoryTalk Linx Gateway.
  2. Tag ID Issues: The tag ID provided by the client is unknown or invalid.
  3. Permission Issues: The client or the tag lacks the necessary read permissions.
  4. Data Type Mismatch: A mismatch occurs between the expected data type and the actual data type that the client sent.
  5. Communication Issues: Problems occur when the client communicates with the data source.
The FactoryTalk Diagnostics Event Log records details such as the group name, the item that failed, and the client connection for troubleshooting assistance.
Location
  • FactoryTalk Diagnostics Counter Monitor > System Diagnostics > localhost > FactoryTalk Linx Gateway OPC UA Server > Client (ID)
Value
  • Type: 64-bit signed integer
  • Source: This value is generated by the FactoryTalk Linx Gateway OPC UA server.
  • Updates: This value increases when an OPC UA client fails to edit a data item.
  • Reset: This value resets when you reset the service or restart the computer.
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