Timetables For The Run-Redundant System State - Siemens Simatic S7-1500 Function Manual

5.5

Timetables for the RUN-Redundant system state

The following section describes the typical times of the CPUs of the S7-1500R/H redundant
system in the RUN-Redundant system state.
Update times of the process image partitions
The following table contains the times for estimating the typical update times of the process
image partitions.
Table 5- 3 Data for estimating the typical update time of the process image partitions
CPU 1513R-1 PN
Basic load for 63 μs
updating process
image partitions
Copy time for 6.5 μs/word
distributed I/O via
PROFINET
A table of the update times of the CPUs in the RUN-Solo system state is available in section
Update time for process image partitions (Page 28).
Program execution time without interruptions
The user program has a certain runtime without interruptions. The runtime depends on the
number of operations that are executed in the user program.
The following table contains the typical durations of operations.
Table 5- 4 Duration of an operation
CPU 1513R-1 PN
Bit operations, 80 ns
typ.
Word operations, 96 ns
typ.
Fixed-point arith- 128 ns
metic, typ.
Floating-point 512 ns
arithmetic, typ.
A table of the program execution times of the CPUs in the RUN-Solo system state is
available in section User program execution time (Page 31).
Cycle and response times
Function Manual, 10/2018, A5E03461504-AD
Cycle and response times of the S7-1500R/H redundant system
Update times of the CPUs in the RUN-Redundant system state
CPU 1515R-2 PN
57 μs
6.5 μs/word
Program execution times of the CPUs in RUN-Redundant system state
CPU 1515R-2 PN
60 ns
72 ns
96 ns
384 ns
5.5 Timetables for the RUN-Redundant system state
CPU 1517H-3 PN
13 μs
2.6 μs/word
CPU 1517H-3 PN
4 ns
6 ns
6 ns
24 ns
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