Parameter Description - Siemens simatic et 200s User Manual

Parameters

2.2 Parameter description

2.2 Parameter description
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 greater the
smoothing, the greater the time constant of the filter.
The figure below shows the step response with the various smoothing factors in relation to
the number of subassembly cycles.
Figure 2-1
Interference frequency suppression
The 2AI U HF analog input module supports the setting of interference frequency
suppression (50 Hz or 60 Hz) on the interface module. This analog input module
(HIGH FEATURE) also enables the interference frequency suppression to be disabled; i.e.,
this setting will be ignored on the interface module. Disabling interference suppression
reduces the conversion and cycle times in this module.
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Smoothing with the 2AI U HF
2AI U HF analog electronic module (6ES7134-4LB02-0AB0)
Manual, 04/2007, A5E01076007-01