Please ensure Javascript is enabled for purposes of website accessibility
Powered by Zoomin Software. For more details please contactZoomin

PI Interface for OPC Alarms and Events

TABLE OF CONTENTS

Failover configuration

Save PDF
Save selected topicSave selected topic and subtopicsSave all topics
Share
Share to emailCopy topic URL
  • Last UpdatedOct 20, 2026
  • 1 minute read

PI Interface for OPC AE provides two methods for configuring failover, to ensure that data collection continues if either the interface or the OPCAE server fails:

  • UniInt failover

    If one instance of PI Interface for OPC AE fails, another instance can take over data collection.

    Note:UniInt failover is a feature common to UniInt-based interfaces. For more information about configuring UniInt failover, see PI Universal Interface (UniInt).

  • OPC AE server-level failover

    If PI Interface for OPC AE stops receiving data from the currently-connected OPCAE server, it can switch to another OPCAE server and resume data collection.

If you are configuring both types of failover, configure failover in the following order:

  1. Configure and verify UniInt failover.

  2. Disable UniInt failover.

  3. Configure and verify OPCAE server-level failover

  4. Re-enable UniInt failover.