Siemens Simatic S7-1500 Function Manual page 31

Cyclic program execution
3.2 Cycle time
Components
1510SP(F)-1 PN
Basic load for 60 μs
updating process
image partitions
Copy time for 0.5 μs/word
central I/O
Copy time for 0.5 μs/word
distributed I/O via
PROFIBUS
Copy time for 0.5 μs/word
distributed I/O via
PROFINET
Components
Basic load for updating process image
partitions
Copy time for central I/O
Copy time for distributed I/O via
PROFIBUS
Copy time for distributed I/O via
PROFINET
Note
Update time of the backplane bus for ET 200SP CPUs
For the update time of the ET 200SP CPUs, observe also the information in table "Update
time of the ET 200SP CPUs" in the section Response time for cyclic and time-driven
program execution (Page 42).
30
Update time of the CPU
ET 200SP
1512SP(F)-1 PN
60 μs
0.5 μs/word
0.5 μs/word
0.5 μs/word
1516pro(F)-2 PN
30 μs
120 μs/word
0.5 μs/word
0.5 μs/word
1515SP(F)-PC
30 μs
0.5 μs/word
0.5 μs/word
0.5 μs/word
Update time of the CPU
ET 200pro
Cycle and response times
Function Manual, 10/2018, A5E03461504-AD