Select filter type
You can select the filter type for each input individually in the "Filter Settings" parameters.
Connection | CoE object | Parameter | ||
|---|---|---|---|---|
X01 | 8100hex | AI Settings Ch.1 | 15hex | Filter Settings |
X02 | 8110hex | AI Settings Ch.2 | 15hex | Filter Settings |
X05 | 8120hex | AI Settings Ch.3 | 15hex | Filter Settings |
X06 | 8130hex | AI Settings Ch.4 | 15hex | Filter Settings |
Possible values
Value | Filter type |
|---|---|
0 | "50 Hz FIR" |
1 | "60 Hz FIR" |
2 (factory setting) | "IIR 1" |
3 | "IIR 2" |
4 | "IIR 3" |
5 | "IIR 4" |
6 | "IIR 5" |
7 | "IIR 6" |
8 | "IIR 7" |
9 | "IIR 8" |
Use the following description to select a suitable filter type for your application.
FIR filter
The filter works as a notch filter and determines the conversion time of the module. The higher the filter frequency, the faster the conversion time. A 50 Hz and a 60 Hz filter are available.
Notch filter means that the filter has zeros (notches) in the frequency response at the filter frequency and multiples thereof, i.e. it attenuates the amplitude at these frequencies.
The FIR filter operates as a non-recursive filter.
IIR filter
The filter with IIR characteristics is a discrete time, linear, time invariant filter that can be set to eight levels (level 1 = weak recursive filter, up to level 8 = strong recursive filter)
The IIR can be understood to be a moving average value calculation after a low-pass filter.
