The output is reset at a certain time, provided it is not
already reset. A conflict is generated in the weekly timer
when the set on time and the set off time at another cam
are identical. In this case, cam 3 takes priority over cam 2,
while cam 2 takes priority over cam 1.
The switching status of the weekly timer is determined by
the status at the No1, No2 and No3 cams.
Days of the week
The prefix "D=" (Day) has the following meaning:
● M: Monday
● T: Tuesday
● W: Wednesday
● T: Thursday
● F: Friday
On-/Off-times
Any time between 00:00h and 23:59h is possible. You can
also configure the on time to be a pulse signal. The timer
block will be activated at the specified time for one cycle
and then the output is reset.
- -:- - means: No on/off-times set.
Setting the weekly timer
To set the on-/off-times:
1. Move the cursor to one of the Cam parameters of the
timer (e.g. No1).
2. Press OK. xLogic opens the Cam parameter assignment
screen form. The cursor is positioned on the day of the
week.
3. Press and to select one or several days of the
week.
4. Press to move the cursor to the first position of the
on-time.
5. Set the on-time.
Modify the value at the respective position, using the keys
and . Move to the cursor to the various positions,
using the keys and . At the first position, you can
only select the value - -:- - (- -:- - means: No on/off-times
set).
6. Press to move the cursor to the first position of the
off time.
7. Set the off time (in the same way as in step 5).
8. Confirm your entries with OK.
The cursor is now positioned on the No2 parameter (Cam2)
and you can configure a further cam.
Special characteristics to note when configuring
The block properties window offers a tab for each one of
the three cams. Here you can set the weekly on times for
the cams. Each tab offers you, in addition, an option of
defining the on and off times for each cam in hour and
minute units. Hence, the shortest switching cycle is one
minute.
You can disable the on and off times individually, i.e. you
can achieve switching cycles extending across more than
one day, for example, by setting the on time for cam 1 to
Monday 7:00h and the off time of cam 2 to Wednesday
13:07h, while disabling the on time for cam 2.
Backup of the real-time clock
The internal real-time clock of xLogic is buffered against
power failure. The buffering time is influenced by the
ambient temperature and is typically 100 hours at an
ambient temperature of 25°C.
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