Data collection
- Last UpdatedDec 28, 2022
- 1 minute read
PI Connector for Siemens SIMATIC PCS7 collects data for OpenPCS 7 variables that were discovered during the browse operation (and passed the filter). The individual snapshots of dynamic and static variables are received as unsolicited OPC UA subscription reads.
OpenPCS 7 alarms are recorded as string events in PI points and conditions end up in PI Event Frames accompanied with a related set of static and dynamic attributes.
Historical data collection
The connector performs automatic history recovery for those OpenPCS 7 dynamic variables which have HistoryRead attribute specified. History recovery is always done at startup from the time when the connector was most recently stopped. During runtime, the history recovery is automatically triggered when the OpenPCS 7 server disconnection was detected.