A pump was stopped at night: can SCADA tell us when the client was used?

[ShiftAnalyst]

Last week a transfer pump was stopped at around 2 a.m. and a tank ran low. The night operator says they didn't touch anything, and the PLC shows the stop came as a command, not from a fault.
I know Omnivex SCADA has tag and alarm reports, but is there also a record of user activity or system events, for example logins, client start/stop or server restarts? We want to understand what happened and, for the future, be able to check this kind of incident ourselves. How do we find this information?

[Technical Support]

Omnivex SCADA keeps Event Logs for system events, and you can use them together with tag and alarm history to rebuild the timeline.
1. Event Report
Open Insert > Report Management > Event Report. Event logs record user interactions, startups and shutdowns. Enter a time range around the incident (for example 01:00–03:00), view the records in the table and export them if needed.
2. Tag history of the pump
If the pump command and status tags have Log Status = Periodic, open the Tag Report, select them and look at the same time window. You will see exactly when the command changed. If they were set to No Log, consider enabling periodic logging for important command and status tags with a suitable Log Time.
3. Alarm history
Check the Alarm Report for the same window: a low tank level alarm or a previous alarm may explain why someone reacted.
Interpreting the result
- If the event log shows a client session at that time, compare it with the command change in the tag report.
- If no client activity is visible, the command may have come from another source, for example the PLC program, a local panel or another system that writes to the PLC. This is worth checking with your automation team.
For the future
- Make sure each operator signs in with their own user (User Editor), not a shared account.
- Use User Access on pages with control buttons, so only authorized users can open them.
Documentation: https://greensoft.ai/documentation/o...tem-interface/