CHoPAN is an unathenticated protocol. Sedona Framework Chopan servers do not authenticate or prevent any reads or writes to app components. By default, the Chopan server in the Niagara (JACE) station allows reads of any appropriate component slot. However, writes from apps in Sedona Framework devices to components in the station are checked for authorization.
This is not part of the CHoPAN protocol, but is internal to the Niagara station. Enabling the Chopan Server in the SedonaJen6lpNetwork automatically creates a User in the station’s UserService named “CHoPAN”. See Figure 20.
As shown in Figure 20, you may wish to set write (W) permissions on one or more categories in the JACE station for user CHoPAN. If using the recommended “best practices”, where all components with target properties in the station are under each SedonaJen6lpDevice, in a “ChopanPts” (or similarly-named) folder, then limiting write permissions to the category assigned to the SedonaJen6lpNetwork (with inherited permissions for its child components), would be one logical option.
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