Scaime eNod4-B - Filters Activation & Order; Low-Pass Filter Cut-Off Frequency

59/95
User manual SCAIME: NU-soft-eNod4B-E-0716_236704-C.doc
b
4
Rejection
0
60 Hz
1
50 Hz
b
3
b
2
b
1
b
0
A/D conversion rate (measures/s)
50-Hz rejection
60-Hz rejection
0000
100
120
0001
50
60
0010
25
30
0011
12.5
15
0100
6.25
7.5
1001
1600
1920
1010
800
960
1011
400*
480*
1100
200
240
(*) In belt mode, A/D conversion rate is fixed to 400 measures/s and cannot be modified.
Note: To be applied, any modification of this setting must be followed by an EEPROM back up and device reboots
(hardware or software).
12.3.2 Filters activation & order
This setting allows to define what filters are enabled in eNod4 signal processing chain.
Note: the filters activation & order setting can be accessed through a 16-bits register except in CANopen®
communication protocol where this word is divided into 2 8-bits registers:
b
0
Meaning
0
band-stop filter disabled
1
band-stop filter enabled
b
1
0
Reserved(not used)
b
10
b
9
b
8
000
low-pass filter disabled
010
2
nd
order low-pass filter
011
3
rd
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).
12.3.3 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 below.
Admitted values: from 10 up to 20000.