Any NiagaraStation has a Sys Def device extension (NiagaraSysDefDeviceExt), with two child components, as shown in Figure 132.
By default, the Sys Def device extension is Enabled.
Child components of the Sys Def device extension are:
The Role Manager of a Niagara Sys Def Device Ext reflects two configuration properties, as well as several read-only status properties (Figure 133).
The key configuration property, Desired Role, defines the relationship of the remote station (represented by the parent NiagaraStation) to the local station, as either:
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Peer — (default) a “peer” relationship exists.
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Supervisor — the remote station represented by this NiagaraStation is this station’s Supervisor.
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Subordinate — the remote station represented by this NiagaraStation is this station’s subordinate (typically a JACE station).
The Sync Task of a Niagara Sys Def Device Ext reflects two configuration properties, as well as several read-only status properties (Figure 134).
This component propagates changes to Sys Def components between stations that are in a “Supervisor/subordinate” relationship.