List of values for event horizon mode
- Last UpdatedDec 16, 2024
- 1 minute read
- PI System
- PI Server 2018
- PI Server
The event horizon mode controls when events for attributes that support future data are returned in the PI AF data pipe. Possible values are described in the following table.
|
Value |
Description |
|---|---|
|
End of Stream |
Events are returned as they are created, without regard to the current time. |
|
Time Offset |
Events are only returned after they cross the relative time offset into the future from now. For example, with a time offset of zero, future tag data changes are not returned until their timestamp is less than or equal to the current time. |
|
Time Offset with Outside Event |
Events are only returned if they occur before the relative time offset into the future, or they are the next event that would cross this time horizon. For example, with a time offset of one hour, future tag data changes are not returned until their time stamp is less than or equal to the current time plus one hour, or they are the next known event after the one hour time horizon. This mode is useful for trending data into the future. |