By default, when you import a schedule under a NiagaraStation using the Schedule Import Manager, the import/export setup is initially configured on both sides as follows:
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Receiving (slave) side:
Niagara schedule component with a ScheduleImportExt configured with “Execution Time” of Manual. The source schedule’s configuration is imported (“pulled”) only once, upon creation. If desired, you can manually Import it again.
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Sending (master) side:
Corresponding schedule export descriptor with an “Execution Time” of Interval, at 5 minute rate. You can adjust this in the export descriptor using Edit.
To review all properties of a schedule export descriptor, including status properties, you can view its property sheet—in the Nav tree under Schedules, simply double-click its Export icon.
Default configuration does not mean the same schedule configuration is continuously exported (“pushed”) to the remote schedule at this rate. Instead, the
export descriptor keeps a “Subordinate Version” timestamp from the last export. If a configuration change occurs, the export
descriptor compares the subordinate version time against the configured interval, and if necessary exports the schedule to
the remote station.
The default “master push” configuration is the most efficient (and recommended) way to keep imported schedules synchronized. However, if the stations are installed on a network configured such that this method is not allowed (perhaps firewall issues), you can configure things in reverse. This means configuring receiving side ScheduleImportExts with “Interval” execution times (to periodically “re-pull” schedule configuration), and set corresponding schedule export descriptors to be disabled.