Hi,
OPC UA Historical Data Access works on top of queues of certain sizes (default is 1000 for each item).
https://zone.ni.com/reference/en-XX/help/376230B-01/opcuavis/opcua_add_item/
I have 2 questions:
- Where these queues are stored? memory? storage?
- Reading from queue means dequeuing? so History Read is clearing a place for new values to take in? Or should the queue be purged manually?
Thanks!
