I downloaded the latest version of ignition 8 yesterday.
Create a new project in ignition and connect it to a third part OPC UA server.(open62541 OPC UA server)
The tags on the third part OPC UA server are updated with 250 ms time interval periodically from 1 to 2, 3, 4, 5 …,99,100
When reading these tags from Ignition and select the historical logging to write the update value of tags into MySQL database through the tag setting of Ignition, 'even I set the mode to “on change” with minimal time interval to 100ms and the max sample interval to 250 ms, from both the UI tags display and MySQL database. I found that the tags in ignition UI and database are both updated with 1 seconds time interval, such as from 1 to 5, 9, 13, 17…
To catch each update value from 1 to 2, 3, 4, 5 on both Ignition UI and database.
I didn’t find any other place can set the time interval for OPC UA data subscription.
BTW, when I use UaExpert tool (a free OPC UA client) to connect the third part OPC UA server, it could catch 250 ms interval update of each OPC UA tags if I set the sample and publish time interval to less than 250 ms.
So how can I catch the short time interval update of each OPC UA tags from Igniton ?
BTW, Both the Ignition and the third part OPC UA server are running on the same machine.