WAGO 750-830, Руководство пользователя

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List of all BACnet Properties in Native Operation • 283
Data_List
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
6.15 Data_List
Data Type List of BACnetCalendarEntry
Objects Calendar
Description This property is a List of BACnetCalendarEntry, each of
which is either an individual date (Date), range of dates
(BACnetDateRange), or month/week-of-month/day-of-week
specification (BACnetWeekNDay). If the current date ful-
fills the criteria of the calendar entry, the current value of
the Calendar Object is TRUE. Individual fields of the vari-
ous constructs may also be unspecified in which case the
field acts as a "wildcard" for determining if the current date
results in a match. In a date range, for example, if the start-
Date is unspecified, it means "any date up to and including
the endDate. " If the endDate is unspecified, it means "any
date from the startDate on.
If the calendar entry were a BACnetWeekNDay with un-
specified month and week-of-month fields but with a spe-
cific day-of-week, it would mean the Calendar object would
be TRUE on that day-of-week all year long. If a BACnet
Device permits writing to the Date_List property, all choices
in the BACnetCalendarEntry shall be permitted.
6.16 Daylight_Savings_Status
Data Type BOOLEAN
Objects Device
Description The Daylight_Savings_Status property, of type BOOLEAN,
shall indicate whether daylight savings time is in effect
(TRUE) or not (FALSE) at the BACnet Device's location.
6.17 Deadband
Data Type REAL
Objects Analog input, Analog output
Description Description: This property, of type REAL, shall specify a
range between the High_Limit and Low_Limit properties,
which the Present_Value property must remain within for a
TO-NORMAL event to be generated under these conditions: