Siemens 181 Workshop Manual page 27

Parameters/address space
4.3 Explanation of Parameters
Smoothing
The individual measured values are smoothed using filtering. The smoothing can be set in
4 levels.
Smoothing time = number of module cycles (k) x cycle time of the module.
The following figure shows how many module cycles it takes for the smoothed analog value
to approach 100%, depending on the configured smoothing. This specification is valid for all
signal changes at the analog input.
①
②
③
④
Figure 4-3
Interference frequency suppression
Suppresses the interferences affecting analog input modules that are caused by the
frequency of the AC voltage network used.
The frequency of the AC voltage network is likely to have a negative effect on measured
values particularly with measurement in the low voltage range and on thermocouples. With
this parameter, the user specifies the line frequency that is predominant in the plant.
Measuring range resolution
Parameters for the measurement type thermal resistor standard and thermocouple.
Allows you to increase the resolution to 2 or 3 decimal places for a configurable section of
the measuring range. See the Scalable measuring range (Page 28) section.
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No smoothing (k = 1)
Weak (k = 4)
Medium (k = 8)
Strong (k = 16)
Smoothing for AI 4×RTD/TC 2-/3-/4-wire HF
Analog input module AI 4xRTD/TC 2-/3-/4-wire HF (6ES7134-6JD00-0CA1)
Manual, 02/2014, A5E03573289-AD