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eNod4-T Ethernet
Digital Process Transmitter
b0
Meaning
0
band-stop filter disabled
1
band-stop filter enabled
b1
0
self-adaptive filter disabled
1
self-adaptive filter enabled
b10 b9 b8
000
low-pass filter disabled
010
2nd order low-pass filter
011
3rd order low-pass filter
100
4th order low-pass filter
Note: In CANopen® communication protocol (according to version), this word is divided into 2 bytes of 8-bits registers.
Bits b8 to b15 are therefore equivalent to bits b0 to b7 of the corresponding address (see CANopen® Register table).
11.3.3.
Low-pass filter cut-off frequency
This register contains the low-pass filter cut-off frequency expressed in Hz and multiplied by 100. That means that 690
is equivalent to 6.90 Hz. The value must be compliant with the table shown in §11.4.
Admitted values : from 10 up to 20000.
11.3.4.
Band-stop filter high cut-off frequency
This register contains the band-stop filter high cut-off frequency expressed in Hz and multiplied by 100. That means
that 690 is equivalent to 6.90 Hz. The value must be higher than the band-stop filter low cut-off frequency.
Admitted values : from 10 up to 20000.
11.3.5.
Band-stop filter low cut-off frequency
This register contains the band-stop filter low cut-off frequency expressed in Hz and multiplied by 100. That means
that 690 is equivalent to 6.90 Hz. The value must be lower than the band-stop filter high cut-off frequency.
Admitted values : from 10 up to 20000.
11.4.
Limitations
Recursive filters like eNod4 low-pass filters are computed according to the filter order, the desired cut-off frequency
and the sampling rate. There are some limitations to respect in order to ensure a safe functioning of the signal
processing. They are listed in the table below :
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eNod4-T
Software user manual
NU-soft-eNod4T-ETH-E-1014_216704-D