Configuration and operation 
  4.5 Telecontrol communication (CP 1542SP-1 IRC) 
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1 
Operating Instructions, 01/2017, C79000-G8976-C426-03 
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 thres
hold 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