Cyclic program execution   
3.2 Cycle time 
  Cycle and response times 
30  Function Manual, 10/2018, A5E03461504-AD 
Basic load for 
updating process 
60 μs  60 μs  30 μs 
Copy time for 
central I/O 
0.5 μs/word  0.5 μs/word  0.5 μs/word 
Copy time for 
distributed I/O via 
0.5 μs/word  0.5 μs/word  0.5 μs/word 
Copy time for 
distributed I/O via 
0.5 μs/word  0.5 μs/word  0.5 μs/word 
 
 
Basic load for updating process image 
Copy time for central I/O 
Copy time for distributed I/O via 
0.5 μs/word 
Copy time for distributed I/O via 
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 
 200SP CPUs" in the section Response time for cyclic and time-driven