Siemens ET 200S Manual page 424

Analog Electronic Modules
S Smoothing in the case of the 2AI U High Speed, 2AI I 2WIRE High Speed,
2AI I 4WIRE High Speed
None: k=1
1
0.63
0.5
0
Figure 12-6
Interference Frequency Suppression
The 2AI U High Feature and 2AI I 2/4WIRE High Feature analog input modules
support the interference frequency suppression setting (50 Hz or 60 Hz) for the
interface module. These High Feature analog input modules also allow you to
disable interference frequency suppression, thus ignoring the setting made on the
interface module. If you disable interference frequency suppression, the
conversion and cycle times become faster for these modules.
12-68
Weak: k=64
100 200
Smoothing in the Case of the 2AI U High Speed, 2AI I 2WIRE High Speed,
2AI I 4WIRE High Speed
Medium: k=128
300 400
Module cycles
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Strong: k=512
500 600