Siemens Simatic S7-1500H - Connecting; Terminal Assignment

Cyclic program execution
3.2 Cycle time
Cycle and response times
Function Manual, 10/2018, A5E03461504-AD
25
Causes of different cycle times
The figure below shows the different cycle times T
cyc1
and T
cyc2
using an example.
Because the cyclic program is interrupted by a cyclic interrupt OB in this example (for
example: OB 30), the cycle time T
cyc2
is greater than T
cyc1
. The cyclic interrupt OB in turn is
interrupted by Motion Control functions and communication.
Figure 3-3 Possible causes of differing cycle times