Siemens 7LF4 541-0 Instructivo página 25

Program - exception
The weekly and annual programs defined are not executed as long as an extra program is active.
However, other exception programs will be executed while an exception program is active.
The various exception programs are combined with an "OR" as described above. (see OR function 3a)
• The option EVERY YEAR should be selected if the exception program is to be activated for the same period in each year (e.g. Christmas, national holidays, bir-
thdays, etc.).
• The option ONCE should be selected if the exception program is to be activated only during a single period (e.g. vacation period) but the start and end dates
of this period are different in each year.
• Option MON TO SUN: the exception program is active from 00:00 hours on the start date to 24:00 hours on the end date. During this period, the time switch
switches only as defined in the exception program.
• Option INDIVIDUAL: the exception program is active from 00:00 hours on the start date to 24:00 hours on the end date. During this period, the switching is
only as defined in the exception program.
• Option PROG ON: the exception program is active from the ON time on the start date to OFF time on the end date. During this period, the output is
permanently on.
• Option PROG OFF: the exception program is active from the ON time on the start date to OFF time on the end date. During this period, the output
is permanently off.
Sample EXCEPTION programs
The output is to be switched off each year for the entire period 01.08. to 31.08.
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