Snapshot data collection

AVEVA™ PI System Connector 3 (PSC3) supports the replication of snapshot data from the source PI System to the destination PI System under two scenarios.

Note: Setting the compressing attribute to compressing=0 will turn compression off for the PI point. This results in increased archived events for the PI point and possibly increase required archive space. Please monitor archive disk usage when editing a significant amount of PI points to disable compression.

The first scenario relates to PI points that have compression disabled/off as indicated by the PI point attribute compressing=0. That is, PI points associated with a Replicate Data Archive only data source configuration or AF objects selected by a Replicate AF and Data Archive data source configuration will replicate snapshot data from the source PI System to the destination PI System. If needed, snapshot replication for a PI point that currently compresses data and only allows archive data replication from the source PI System can be edited to send snapshot data replication by setting the compressing attribute to compressing=0 on the source PI point to allow replication of snapshot data from the source to destination PI System.

The second scenario is associated with PI points that match the snapshot query on the Overview tab. PSC3 replicates snapshot data from the source PI System to the destination PI System for source PI points returned by the query.