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S5-95F
Tables 10-3 through 10-6 provide you with information about the significance of the signal states of
the respective flags.
Clock Flags
Table 10-3. Significance of Bits 0, 1 and 2 of the Status Word
Bit Number
Signal State
0
1
2
Operating System Flags
Table 10-4. Significance of Bits 4 and 5 of the Status Word
Bit Number
Operating
Status
Mode
Word
STOP
4
5
RUN
4
5
EWA 4NEB 812 6210-02
1
Error in setting entry
0
No error in setting entry
1
12-hour clock mode
0
24-hour clock mode
1
Transfer settings
0
Do not transfer settings
Signal
State
1
The clock updates only words 0 to 3 (current time/date) in
the clock data area.
0
The clock does not update the clock data area. Words 0
to 3 contain the time at which the last switch from RUN to
STOP occurred.
1
Words 18 to 21 contain the time at which the last RUN to
STOP switch occurred or the time at which the last
Power OFF occurred if bit 4 is also set.
0
Words 18 to 21 are not used.
1/0
The clock continually updates the clock data area
(Words 0 to 17).
1
Words 18 to 21 contain the time at which the last switch
from RUN to STOP occurred or the time at which the last
Power OFF occurred.
0
Words 18 to 21 are not used.
The Integral Real-Time Clock
Meaning
Meaning
10-7
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