in the ExampleDevice, I don't understand when the "onDataItemsModified" is triggered when I add/delete/rename tags in Ignition ?
It's called when an OPC UA client calls the ModifyMonitoredItems service and modifies e.g. the sampling interval, queue size, monitoring mode, filter, etc...
Most things you do in Ignition result in the item being deleted and created on another subscription.
I think only the OPC UA specific Tag Group properties will result in a modify call.
When I change Tag group in Ignition it seems to trigger
onDataItemsDeleted
onDataItemsCreated
onMonitoringModeChanged
I never see logs for "onDataItemsModified" ?
I wan't to keep track of subscription on the same item to dynamically create opcua node, and delete them where there is no more subscription on it
As I said, it's not expected in most cases.