# Monitor OPC UA connection over time

**URL:** <https://forum.inductiveautomation.com/t/monitor-opc-ua-connection-over-time/77392>\
**Category:** Ignition\
**Tags:** ignition81, perspective\
**Created:** [August 3, 2023, 6:42pm UTC](https://forum.inductiveautomation.com/t/monitor-opc-ua-connection-over-time/77392 "2023-08-03T18:42:18Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Liliya\_Boyadjieva](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/liliya_boyadjieva/32/39073_2.png) [@Liliya\_Boyadjieva](https://forum.inductiveautomation.com/u/Liliya_Boyadjieva)\
**Post date:** [August 3, 2023, 6:42pm UTC](https://forum.inductiveautomation.com/t/monitor-opc-ua-connection-over-time/77392/1 "2023-08-03T18:42:18Z")

</div>

Our gateway is on version 8.1.17. Lately we've had an issue where a few tags that are supposed to always be latched on fall to 0 momentarily throughout the day and trigger an alarm. Tag History is enabled for those tags so I do see the tag toggle to 0 and go back up to 1, however I would like to rule out laggy communication between the gateway and the PLC. Is there any way to monitor the status of an OPC UA connection over time?

A follow up question in the event that the connection can't be monitored : if the connection is indeed lost for an instant, how is the tag history logged during the disconnect? Is it considered null/missing or is it logged as a 0?