S
YSTEM
P
ARAMETERIZATION AND
O
PERATION
System 6844(RC) - V03.00
49 / 157
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
5.2.4 Input Daylight Saving Time (DST) Changeover
This input is used to define the points of time at which the changeover is made to daylight
saving time (DST) or to standard time throughout the course of the year. The hour, weekday,
week of the month and month in which the daylight saving time (DST) changeover (daylight
saving time / standard time changeover) is to take place are given here. The exact points of
time are then calculated automatically for the current year.
After the turn of the year the switching times for daylight saving time and
winter time are automatically calculated by the Clock System, which do not
require any user interaction.
The parameters are selected in such a way that the changeover can take place at any point
of time. For control purposes, the exact date for the current year is indicated in the
SHOW
functions.
If the DST changeover is
not
to be activated all values have to be entered as 0. The System
6844(RC) then only operates with the standard time (winter time) set via the time offset.
Selection frame:
S E T C H A N G E _ O V E R
For winter / summer time changeover
D A T E S - > D Y / N
(
S
tandard time
D
aylight saving time)
Input frame:
S - > D h h / d / w / M M
>
0 2
/
7
/
5
/
0 3
<
Selection frame:
S E T C H A N G E _ O V E R
For summer / winter time changeover
D A T E D - > S Y / N
(
D
aylight saving time
S
tandard time)
Input frame:
D - > S h h / d / w / M M
>
0 3
/
7
/
5
/
1 0
<
The meaning of the individual items is as follows:
hh
The hour
in which the changeover is to take place
00 ... 23 hours
d
The weekday
on which the changeover is to take place
1 = Mo ... 7 = Su
w
the appearance of weekday in the month
on which the changeover is to take place
1 ... 4
1.-4. appearance
5
last appearance in the month
MM
The month
in which the changeover is to take place
The entry is completed by pressing the
ENT
key.
