Siemens SIMATIC ET 200AL System Manual page 2087

What you should know about analog technology
2.19 Smoothing
Example 2: Exponential smoothing
The diagram below shows the step response of the smoothing factor for different numbers of
module cycles.
①
②
③
④
Figure 2-26
56
No smoothing (k = 1)
Weak smoothing (k = 4)
Medium smoothing (k = 16)
Strong smoothing (k = 32)
Exponential smoothing with four smoothing levels
Analog value processing
Function Manual, 06/2014, A5E03461439-AC