Siemens 7LF4 521-0 Instructions De Service page 11

Programming
A program consists of an ON time, OFF time and associated on and off days.
Programs with predefined on/off days (Mon to Sun, Mon to Fri and Sat and Sun): for these programs, you only need to set the switching times.
With the „INDIVIDUAL" option, you can allocate switching times to specific days of your choice.
The programs of a channel are combined with a logical OR.
CHRONO = All switch commands are executed in chronological order in a week
INPUT = Programs are executed in the order in which they are entered
Contrast adjustment
Set MON and TUES
as on/off days
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