User Manual

Calendars and schedulers
Calendar
10
CM110664en_07 171 | 353
10.2 Calendar
The calendar object is a function block from the firmware library. It contains a
list of dates [DateList] with, e.g., a date or a date range.
The date list [DateList] uses Boolean logic to control the calendar outputs.
[PrVal] activates an exception profile if the calendar object is referenced by a
schedule object. The outputs tomorrow [Tmw] and day after tomorrow
[DayAfTmw] support the optimum start/stop control of the plant.
The SCHED (schedule) and CAL (calender) function blocks in the firmware
library correspond to the SCHED and CAL standard BACnet objects. Standard
BACnet object can be operated via the BACnet clients.
The calendar and schedule can be linked at the BACnet level by references.
There is no data flow link between the calendar and schedule function blocks in
the CFC chart.
10.3 Wildcards
A wildcard character (*) generates a repetition and is an abbreviated way of
listing individual entries, e.g., writing 3.* is a short way of representing 3.1., 3.2.,
3.3., 3.4., 3.5., etc.
All data structures of the scheduler or calendar objects support dates with
wildcards. Date ranges and time specifications do not support wildcards. Invalid
weekdays are ignored.
Date entries with wildcards
Date Meaning
23.April.2001 /Monday 23.April.2001, Monday
23.April.2001 /Tuesday Never, since 23.April 2001 is a Monday
23.April.2001 /* 23.April.2001
23.April.* /Monday Each April 23rd, each year if the weekday is a Monday
*.April.2001 /* Every day in April 2001
*.April.* /Tuesday Each day in April of each year if the weekday is a Tuesday
31.*.* /* Each January 31, March 31, May 31, … of each year
or each February 28/ 29, April 30,... of each year
If a date contains a wildcard in the month or year, the last day of the month is
used for the day, if the value of the day is greater than the maximum number of
days in the month.
Week and day with wildcards
The following table shows an example of entering a week and day (WeekNDay)
using wildcards. During the evaluation, a wildcard is replaced by the
corresponding value of the current date. If the WeekNDay generated in this way
is equivalent to the current date, this is an exception day.
Function block Calendar
Standard BACnet object
Calendar