Siemens ET 200SP Operating Instructions Manual page 75

Requirements and restrictions
You will find the requirements for the configuration of the preprocessing options and
restrictions in the section relating to the particular function.
Note
Restrictions due to configured triggers
The analog value preprocessing options "Fault suppression time", "Limit value calculation"
and "smoothing" are not performed if no threshold value trigger is configured for the relevant
data point.. In these cases, the read process value of the data point is entered in the image
memory of the CP before the preprocessing cycle of the threshold value calculation (500 ms)
elapses.
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03
4.5 Telecontrol communication (CP 1542SP-1 IRC)
Configuration and operation
75