Figure 16-3 Minimum Cycle Time - Siemens SIMATIC S7-400H System Manual

Minimum cycle time
You can set the minimum CPU cycle time in STEP 7. This is useful if you
● want to set an interval of approximately the same length between the program execution
● prevent unnecessary process image updates if the cycle time is too short
Figure 16-3 Minimum cycle time
The actual cycle time is derived from the sum of T
equal to T
S7-400H
System Manual, 09/2007, A5E00267695-03
cycles of OB 1 (free cycle), or
.
min
S7-400 cycle and reaction times
16.3 Different cycle times
and T . So it is always greater than or
cyc wait
267