Siemens SIMATIC S7 400 Application Description page 58

Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
Operating the seven-day time switch
For the seven-day time switch the following parameters must be set:
• Switch-on time with hour, minute and second as well as the respective
day of the week
• Switch-off time with hour, minute and second as well as the respective
day of the week
• Control parameters
Specifying the day (day of the week):
• 1 to 7 corresponds to Sunday to Saturday
• 8 corresponds to Monday to Friday, i.e. the clock is active every day
from Monday to Friday between switch-on and switch-off time. If the
switch-off time is less than the switch-on time, the clock is active until
Saturday.
• 9 corresponds to Saturday to Sunday, i.e. the clock is active every day
from Saturday to Sunday between switch-on and switch-off time. If the
switch-off time is less than the switch-on time, the clock is active until
Monday.
Important
!
The specified switch-on day is always "leading". This means: If 8 or 9 has been
specified as the start day, the end day must also be 8 or 9. If the start day is
between 1 and 7, the end day must only be between 1 and 7 as well, and not be 8
or 9.
The parameterization for the seven-day time switch is displayed for seven-
day time switch 1 listed above. The parameterization for the one-week time
switches 2 and 3 follows the same parameterization as this one.
Rev. B - final 19.07.2002 58/84