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S5-115U Manual
Figure 2-14 shows the subdivision of the system time. The time values are listed in Table 2-7.
Time load caused by
PG/OP
Time load caused by
SINEC L1
Updating of the
operating system timers
n=No. of timers active in the
scan cycle
EWA 4NEB 811 6130-02b
PG/OP
SINEC L1
Update time cells
Figure 2-14. System Time
Table 2-7. System Time
System Time
Approx. 6% of the user time (T
At SI 1:
Up to 100% of the user time
At SI 2:
Negligible
CPU
CPU 941
CPU 942
CPU 943
CPU 944
Technical Description
)
A
Time in µsec.
(T
/10msec.) · (260+n · 0.8)
A
(T
/10msec.) · (260+n · 0.8)
A
(T
/10msec.) · (215+n · 0.4)
A
(T
/10msec.) · (225+n · 0.4)
A
2-25
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