Parameters Of The Analog Electronic Modules - Siemens Simantic ET 200S Manual

Analog electronic modules
4.5 Parameters for analog electronic modules
See also
Connecting Thermocouples (Page 4-18)
4.5.7

Parameters of the Analog Electronic Modules

Smoothing
The individual measured values are smoothed by digital filtering. The smoothing can be
adjusted in four steps, in which the smoothing factor k multiplied with cycle time of the
electronic module equals the time constant of the smoothing filter. The higher the smoothing
the greater the time constant of the filter.
The following diagrams show the step response with the various smoothing factors
depending on the number of subassembly cycles.
Figure 4-3
4-34
Smoothing with the 2AI U Standard, 2AI U High Feature, 2AI I 2WIRE Standard,
2AI I 4WIRE Standard, 2AI I 2/4WIRE High Feature, 2AI RTD Standard, 2AI RTD High
Feature, 2AI TC Standard, 2AI TC High Feature
Manual, Edition 10/2005, A5E00514527-01
ET 200S