Siemens SIMATIC S7-1200 Function Manual page 103

Example
PID_Compact sampling time = 100 ms
PID algorithm sampling time = 1000 ms
Minimum ON time = 200 ms
Output is a constant 15%. The smallest pulse that PID_Compact can output is 20%. In the
first cycle, no pulse is output. In the second cycle, the pulse not output in the first cycle is
added to the pulse of the second cycle.
①
②
⑤
In order to minimize operation frequency and conserve the actuator, extend the minimum ON
and OFF times.
If you are using "Output" or "Output_PER", you must configure the value 0.0 for the minimum
ON and OFF times.
Note
The minimum ON and OFF times only affect the output parameter Output_PWM and are not
used for any pulse generators integrated in the CPU.
See also
Process value settings V1 (Page 100)
Process value monitoring V1 (Page 101)
Output value limits V1 (Page 104)
PID parameters V1 (Page 104)
PID control
Function Manual, 03/2017, A5E35300227-AC
PID_Compact sampling time
PID algorithm sampling time
Minimum ON time
Using PID_Compact
4.3 PID_Compact V1
103