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[Fan_Du]

Hi pascallac.
This topic explains in detail how to use priorities.

Controlling from External Masters using Priority Array

The priority array is a mechanism to support multiple masters in a given system. Normally a controller will be in charge of the outputs on board itself. Occasionally you may want to override the outputs from the logic running in an external master controller, perhaps to do morning startup or load shedding. In emergencies there may be a smoke evacuation mode managed by a fire control system. Priority arrays are read only, if you would like to change the value of an output you write to the presen…

Thanks!