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i.CanDoIt® Guided Tour (p.11)
Time & Date Scheduling
This set of pages will provide a brief overview of i.CanDoIt® features and functions. Cruise through using the Next and Previous buttons, or skip around using the links at the bottom of the pages.

Weekly Scheduling using Time/Date or Astronomical Clocks

Suppose you want the lights in the parking lot to come on half hour before sunset, and go off half hour after sunrise. One way to do that is use a time clock and reset it a few times a year. The better way to do that with i.CanDoIt® is use the astronomical clock. Instead of on and off times, you simply say "dawn" and "dusk" with an optional offset.

In this example, we set register #11 half hour before sunset, and clear it half hour after sunrise. Our hardware configuration determined that register #11 is allocated to Relay 3, which we have wired to control the parking lot lights. Register #12, Relay 4, shows how to do it the old way using time of day.

The above example shows two scheduled events that will happen every day of the week because all days are checked. If you wish the weekly event to only occur on Saturday, for example, you would only check the "S" box at the end of the string of boxes. For weekdays only, you would check M through F (Monday through Friday).

The astronomical clock requires knowing where in the world you are. The clock setting page found at System->Setup->Time & Date includes a section for setting location.

Once the internal battery backed clock and calendar have been set, and you have entered lattitude, longitude, and time zone, the clock setting page will show you when the system has calculated sunrise and sunset to be at this location.

On Demand Scheduling using Time/Date or Astronomical Clocks

Sometimes it is desirable to schedule something to happen just once at a specific time and date. This is done with "on demand" scheduling. You simply specify a starting time and date, and ending time and date, and the given register will be set accordingly during that time.

In this example, we are opening the parking lot gate on two consecutive dates. Our parking lot is normally closed on weekends, but we are sponsoring a special event requiring the use of our parking lot on two consecutive Saturdays. Fill in your own favorite example here.