Configure the connector for the OPC historian - j5 - 30 - Administration & Configuration - Hexagon

j5 OPC Connector Configuration

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Administration & Configuration
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An OPC data source is configured on the OPC Connection node.

An OPC UA tag name/node ID has a namespace and an identifier, whereas an OPC DA or OPC HDA (supported on j5 version 28.0) tag name only has an identifier.

OPC Connection


  • Convert Boolean Values: Select True to convert the Boolean values into integers (0 and 1). This allows the aggregates to be calculated.

  • Disable Subscriptions: Select True to disable the OPC subscription. This will force j5 to poll OPC for values.

  • Ignore OPC Timestamp: Select True to ignore the timestamp that OPC specifies. The time the event arrives in j5 is used as the time.

  • Only query existing data: Select True to only query existing data. It won't query any data-point later than the timestamp of the last real data-point. Additionally, it will only search up to a week before the queried time. If there was no real data-point within the last week, it will return null.

  • Read Timeout: Enter the number of seconds before a tag reading times out.


  • Heartbeat Tag: Enter the identifier for a heartbeat tag. j5 listens to this tag to detect disconnection events.

  • Heartbeat Update Interval: Enter the expected maximum number of seconds between each change ("heartbeat") on the Heartbeat Tag.

  • Maximum Heartbeat Errors: Enter the number of read errors j5 should encounter before it does a forced reconnect.


  • Disable Auto-Prefix of Datasource Name: Select True to stop the ‘opc_’ prefix from being added to the data source name in j5.

  • Display Possible Tags: Select True to read the possible tag identifiers on the OPC tag database. These tag readings can be tracked in the j5 Event Manager application. When False is selected, a manual tag entry is still possible.

    The Display Possible Tags setting can cause performance issues with large OPC tag databases when set to True.

  • OPC Server: Enter the URL of the OPC server you want to connect to.

  • Root Object ID: Enter the ID of the root object node.


  • Application Certificate: Browse to the application certificate or enter the path to the certificate.

  • Application Private Key: Browse to the private key of the application certificate or enter the path to the private key.

  • Authentication Method: Select the method you want to use to connect to the OPC server.

  • Message Security Mode: Select the security mode you want to use for communication with the OPC server.

    You can only select the None option when the security policy is set to None.

  • Security Policy: Select the security policy that is supported by the OPC server.

  • User Certificate: Browse to the user certificate or enter the path to the certificate.

  • User Private Key: Browse to the private key of the user certificate or enter the path to the private key.