Siemens SIMATIC S7-400H System Manual page 363

Operating system execution time at the cycle control point
The table below shows the operating system execution time at the cycle checkpoint of the
CPUs.
Table 19- 8 Operating system execution time at the cycle control point
Sequence 412-5H
stand-alone
mode
Cycle 120-700 µs
control at
the SCCP
∅ 130 µs
Extended cycle time due to nested interrupts
Table 19- 9 Extended cycle time due to nested interrupts
CPU Hardware
interrupt
CPU 412-5H 240 µs
stand-alone
mode
CPU 412–5H 680 µs
redundant
CPU 414–5H 160 µs
stand-alone
mode
CPU 414–5H 420 µs
redundant
CPU 416–5H 120 µs
stand-alone
mode
CPU 416–5H 300 µs
redundant
CPU 417–5H 90 µs
stand-alone
mode
CPU 417–5H 200 µs
redundant
The program runtime at interrupt level must be added to this time extension.
The corresponding times are added together if the program contains nested interrupts.
S7-400H
System Manual, 03/2012, A5E00267695-11
412–5H 414-5H
redundant stand-alone
mode
405- 70-450 µs
2080 µs
∅ 505 µs ∅ 80 µs
Diagnostic Time-of-
interrupt day
interrupt
240 µs 230 µs
550 µs 700 µs
120 µs 150 µs
400 µs 490 µs
110 µs 100 µs
250 µs 370 µs
70 µs 70 µs
170 µs 230 µs
414–5H 416–5H
redundant stand-alone
mode
260- 50-400 µs
1350 µs
∅ 310 µs ∅ 55
Delay interrupt Cyclic
inter-
rupt
150 µs 150 µs
580 µs 450 µs
100 µs 100 µs
360 µs 280 µs
80 µs 60 µs
220 µs 200 µs
50 µs 50 µs
150 µs 150 µs
S7-400 cycle and response times
19.2 Calculating the cycle time
416–5H 417-5H
redundant stand-alone
mode
180-970 µs 30 - 330 µs
∅ 215 ∅ 35 µs
Programming I/O
error access
error
80 µs 80 µs
350 µs 179 µs
60 µs 60 µs
220 µs 120 µs
40 µs 40 µs
150 µs 90 µs
30 µs 30 µs
100 µs 45 µs
417–5H
redundant
115 -
650 µs
∅ 130 µs
Asyn-
chronous
error
180 µs
550 µs
120 µs
306 µs
80 µs
230 µs
70 µs
133 µs
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