For OPC, a client can subscribe data change which happens on OPC server. Does PI AF provide a similar subscription function so that client using PI AF can subscribe data changes of tags? If a tag has a new snapshot data, then client will receive a notification of the data change.
Hi Johan
You can install PI OPC DA Server enables the functionality you are looking. Similar to other OPC servers, OPC client can connect and request data from PI.
PI OPC DA Server - Overview
Thanks
Lal