Niagara history discovery was enhanced to permit operations that were previously blocked or unavailable. For details, see
Niagara Discover enhancements.
Niagara history features that affect NiagaraNetwork configuration include:
Starting in AX-3.5, it is possible to use components known as “export tags” in a JACE station, that upon a “Join” command, will automatically add pre-configured Niagara HistoryImport descriptors in a remote Supervisor station, and import those JACE histories. This is one of many functions provided by export tags. For complete details, see the document NiagaraAX Export Tags.
Starting in AX-3.5, you can create special folders under the Histories extension of a NiagaraStation, using a “” button in the Niagara History Import Manager or History Export Manager, to better organize history import and export descriptors. Each folder provides manager views.
Starting in AX-3.5, a “Device Histories View” is on a NiagaraStation’s Histories extension, which provides shortcuts to histories. Although not unique to the NiagaraNetwork, this feature may be useful, especially in a Supervisor station. See Device Histories View.
“On demand” polling is also available for both local histories and imported histories. On any history enabled for this, a system user can now poll for live data when viewing its history chart or history table view, by clicking the “Live Updates” toggle button (play icon). Refer to the NiagaraAX User Guide section “About On Demand history views” for related details.
You can also import/export histories based upon text “system tag” patterns, versus explicit History Ids (i.e. “Discover” in the History Import (or Export) Manager, then selecting specific histories to add). This utilizes a “System Tags” property in history extensions. Refer to the NiagaraAX User Guide section “Configure history extensions” for related details.
The last two features above have associated properties in Niagara history import and history export descriptors, with values available in the corresponding manager views (Niagara History Import Manager, Niagara History Export Manager). In addition, the “on demand” polling feature has an associated “On Demand Poll Scheduler” component under the NiagaraNetwork’s history network extension (History Policies).
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