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USER GUIDE FALCON
113 EN2Z-0962GE51 R0715
TIME PROGRAMS
Schedules and Calendars
Time programs comprise schedules and calendars.
Schedules Schedules are daily and weekly time programs.
Whenever you want, you can use schedules to enter the setpoint or status for any
datapoint.
Schedules are assigned to plants. Each plant of a controller can have multiple
schedules assigned and each schedule can command datapoints of that plant.
Each schedule specifies a list of datapoint properties to command (switchpoints) on
a weekly basis. The week program defines the normal daily activity of the system by
specifying which switchpoints are to be commanded each day of the week. The
week program applies to a definable time period. There is only one week program
per schedule.
Schedules offer 16 write priorities that define the priority for writing to the present
value of output and value datapoints. Note, that only the priorities 9 to 16 are
allowed in the controller.
Besides the week program, specific programs called exceptions can be created.
Exceptions have higher priority than the week program and will overwrite the week
program for a definable time period. Exceptions can have four different time periods:
•
Specific Date
e.g. Christmas Eve or 5.5., the whole of May, or the whole year of 2004
•
Date Range
e.g. Summer holidays from 29.7-7.9.2004
•
Recurring Event
e.g. every last Friday of every month
•
Calendar Reference
A project-wide calendar provides dates, e.g. regional holidays and
public/religious festivals or any other particular date. The time period can be a
specific date, a date range or a recurring event.
Calendars Calendars are assigned to a whole project. They contain exception days or periods,
e.g. Christmas, holidays.
If controller schedules are referring to the same calendar(s), project wide scheduling
is possible for these controllers, because calendar dates are executed in each
controller of the project, which has references to the calendar. Changes in multiple
particular controller schedules can be quickly made by simply changing the
referenced calendar(s).
Switchpoints / Switched Properties By default, the property ´present value` is assigned to a datapoint. Hence, when
switching a datapoint, the present value of the datapoint is switched. This is the
standard case. In addition, in enhanced case, multiple datapoints and or other
properties than the present value can be switched.