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Hierarchy of Control
Priority Level 1 - Stagger Up
Priority Level 2 - Timed External Override
Priority Level 3 - Toggle Override (keyboard and external)
Priority Level 4 - External Enable
Priority Level 5 - Astro
Priority Level 6 - Programmed events (on, off, duration, duty cycle, sensor control)
NOTES: 1. A keyboard override cannot be performed during stagger up.
2. An external override can be done during stagger up, but the stagger up sequence
is still observed.
3. Status update will cancel a keyboard override or an external toggle override, but
will not cancel an external timed override.
4. All programmed events have the same priority. The most recent event is the one
that is active.
As an example of hierarchy, consider a simple lighting control application. It is desired to turn
parking lot lights on at sunset and off at 11:00pm. Programming an ON event at 1:00pm, an
OFF event at 11:00pm and using the astro feature will provide the desired control. The ON and
OFF events (at priority level 6) would energize the lights from 1:00pm to 11:00pm. However,
because the astro function has higher priority, the lights will be held off during daylight hours -
thus achieving the desired control.
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