L-INX User Manual
91
LOYTEC
Version 4.0
LOYTEC electronics GmbH
priority exist, it is not defined, which one is in effect. Therefore, always use distinct
priorities.
Apart from the defined value presets, there exist special events that can be scheduled in a
daily schedule. They affect how the scheduler behaves and which exception is active:
Invalid
: If this value is scheduled, the scheduler transmits the invalid value. The
numeric representation of that invalid value is defined by the underlying data point and
is technology-specific.
Withdraw
: If this value is scheduled, the scheduler takes the previously value preset
out of effect. This means that the daily schedule with the next lower priority becomes
effective. If no daily schedule with lower priority applies, the scheduler behaves as if it
was disabled. Figure 76 presents an example of the
Maintenance Day
exception day,
which schedules the
maint
value at 6 am and goes out of effect at 10 am. If the
maintenance day falls on a Monday, the regular schedule for Monday will be
overridden by the Maintenance schedule at 6 am and become effective again at 10 am
sending the
day
value.
Temporary Disable
: If this value is scheduled, the entire scheduler is disabled until a
new event is scheduled in a daily schedule of the same or higher priority than the one
that has the temporary disable event. This type of event can be used to define periods
for manual override.
Please also refer to the technology-specific limitations described in Section 6.12 to learn
about special behavior of the respective networking technology.
Figure 76: Example using withdraw in an exception schedule.
The configuration of exceptions is done by calendar patterns in the calendar. Each calendar
pattern contains a number of pattern entries. These entries can define the following:
A single date: This defines a singe date. Wildcards may be used in the year to specify
July 14
th
of every year.
