A HistoricalEventNode that has Event history available will provide the Property. This Property is formally defined in Table 7.
Table 7 – Historical Events Properties
|
Name |
Use |
Data Type |
Description |
|
Standard Properties |
|
|
|
|
HistoricalEventFilter |
M |
EventFilter |
A filter used by the Server to determine which HistoricalEventNode fields are available in history. It may also include a where clause that indicates the types of Events or restrictions on the Events that are available via the HistoricalEventNode. The HistoricalEventFilter Property can be used as a guideline for what Event fields the Historian is currently storing. But this field may have no bearing on what Event fields the Historian is capable of storing. |