Functionality In The S7-Cpu; Absolute Time Switching Functions - Siemens SIMATIC S7 400 Application Description

Time switch based on the S7-300/400 CPUs with simple HMI system
including radio-controlled clock connection
2.1

Functionality in the S7-CPU

The following blocks are available in the S7-CPU:
2.1.1

Absolute time switching functions

One-day time switch:
This block can detect a time range within 24 hours, e.g. 8 to 12 o'clock.
These switch times are repeated daily.
12:00 a.m
Fig. 2-4
Seven-day time switch:
This block can detect a time range within 7 days, e.g. each Tuesday
from 8 o'clock p.m. to Friday 6 o'clock a.m.. These switch times are
repeated on a weekly basis.
Note:
It is also possible to repeat a switch time daily from Monday to Friday.
So 12:00 a.m.
Fig 2-5
One-month time switch:
This block can detect a time range within 31 days, e.g. each month from
rd
the 3
st
1
12:00 a.m.
rd
3 , 12:00 p.m.
Fig 2-6
Rev. B - final 19.07.2002
8:00 a.m.
Time range one-day time switch
Di, 8:00 p.m.
Time range seven-day time switch
, 12 o'clock p.m. to the 7
th
7 , 9:00 p.m.
Time range one-month time switch
Warranty, Liability and Support
12:00 p.m.
Fr, 6:00 a.m.
th
21 o'clock p.m..
11:59:59 p.m
Sa 11:59:59 p.m.
st
31
11:59:59 p.m.
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