(Advanced) Date/Time - KMC Controls FlexStat BACnet Operation Manual

(Advanced) Date/Time

DATE/TIME
DATE: APRIL 11 2009
TIME: 1:43:59 PM
UTC OFFSET: 300
DST ENABLE: TRUE
DST AUTO: TRUE
DST START:
>2ND SUN MAR
NOTE: When a FlexStat is powered up after
losing the RTC (Real Time Clock) time, it
will revert to the default time and date of
January 1, 2000, 12:00:00 AM.
To enter date and time information, press:
1. Up/Down to move among entries.
2. Enter to select.
3. Right/Left to move among value fields.
4. Up/Down to increment/decrement value.
For areas that observe DST (Daylight Saving Time),
select True/On for DST ENABLE. The DST period is
currently the second Sunday of March through the
first Sunday of November, but these dates can be
changed in the menu if the official period changes or
if the installed location needs a schedule adjustment
for better operation.
NOTE: An issue can occur if a FlexStat has been
unpowered long enough for it to lose its
RTC timekeeping during the period DST
is in effect AND a time synchronization
command is sent from BACstage or
TotalControl to the FlexStat. The time will
be restored to the correct time and date.
However, the FlexStat will assume that this
time is non-DST. Within about one minute
after the initial time synchronization
(during DST months), the device time will
reset to DST mode, and the device time will
move one hour ahead. This will affect the
displayed time on the LCD display as well
as any schedules. This issue will not affect
powered-up FlexStats during non-DST
periods (e.g., most of November through
February). If the time has erroneously
advanced one hour after an initial time
synch command, the easiest solution
is to simply send a second time synch
command. This will correct the device time.
Alternately, the hour can be changed in the
FlexStat's menu.
FlexStat
2:00 AM
If the FlexStat is used in a BACnet network with UTC
(Coordinated Universal Time) synchronization (via
broadcasting or addressing a single thermostat) set the
UTC Offset value. The UTC Offset value is in minutes
and corresponds to the distance of the local time zone
to the zero degree meridian. In stand-alone operation
or networks that do not have UTC broadcasts, setting
this value is not necessary.
Sample Time Zones
Alaska
USA/Canada Pacific
Standard Time
USA/Canada Mountain
Standard Time
USA/Canada Central
Standard Time
USA/Canada Eastern
Standard Time
Bolivia, Chile
Argentina, Uruguay
United Kingdom,
Portugal
Europe (most countries) –1 hours = –60 minutes
Egypt, Israel, Turkey
Kuwait, Saudi Arabia
United Arab Emirates
India, Sri Lanka
China, Mongolia
Korea, Japan
New Zealand
NOTE: The BACnet standard for this offset value
is: "The time zones to the west of the zero
degree meridian shall be positive values,
and those to the east shall be negative
values." The value is in minutes, not hours.
15
Offset to Equal UTC
9 hours = 540 minutes
8 hours = 480 minutes
7 hours = 420 minutes
6 hours = 360 minutes
5 hours = 300 minutes
4 hours = 240 minutes
3 hours = 180 minutes
0 hours = 0 minutes
–2 hours = –120 minutes
–3 hours = –180 minutes
–4 hours = –240 minutes
–5.5 hours = –330 minutes
–8 hours = –480 minutes
–9 hours = –540 minutes
–12 hours = –720 minutes
Operation Guide, Rev. L