Sices HS 315, Техническое руководство

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224 Technical Handbook
18 262144 00040000 Tuesday
19 524288 00080000 Wednesday
20 1048576 00100000 Thursday
21 2097152 00200000 Friday
22 4194304 00400000 Saturday
The parameter must be set with the sum of the values of the required days (in hexadecimal
notation).
Selecting a day of the week (Sunday for example),
it is then possible to select if all “Sundays”
in the month must be used or only some of them. Using the parameters of the controller, this
selection is done by means parameter P.1902 (for the calendar 1 or equivalent for other
calendars). This is also a bit-field parameter:
BIT Value Hexadecimal Occurrence
0 1 00000001 First occurrence
1 2 00000002 Second occurrence
2 4 00000004 Third occurrence
3 8 00000008 Forth occurrence
4 16 00000010 Last occurrence
The parameter must be set with the sum of the values of the required occurrences (in
hexadecimal notation).
Note: for “weekly” calendars, the days of week and their
occurrences in the month are selected by the same parameter, using different bits.
If t
he “occurrence” bits are all “0”, then the selected days of week will be managed in any week
of the month; otherwise they will be managed for the selected occurrences only. The “last”
option is useful because, depending on the month and on the year, a certain day of the week
can be pre
sent 4 or 5 times in a month: using the “last” option you can do an action exactly in
the last occurrence in the month. A typical example is the management of the daylight save
time; in Italy, it is activated on the last Sunday of October, and deactivated on the last Sunday
of March. Those Sundays can be the 4° or the 5° occurrence in the month, depending on the
first day of the month. Using the “last” option, the problem is solved.
Finally, for both “weekly” and “monthly” calendars, it is possible to select a time-slot (valid for
all selected days). The controller will activate the internal bit only inside the selected time-slot.
Using the parameters of the controller, the time-slot can be selected by means P.1903 and
P.1904 (for the calendar 1 or equivalent for other calendars). If those parameters are set with
the same values, the full day is selected. If the start time is lower than the end time, the time-
slot is not across midnight; otherwise, the internal bit is activated after the start time of the
selected days, and it is deactivated after the end time of the day after the selected one.
Using the AND/OR logics, it is possible to activate a digital output into selected days and time-
slot (selected using a calendar):
This is an example for the configuration of the daylight save time for Italy, using calendars 15
and 16:
•
Calendar 15.