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Product Nomenclature and Function
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CPS-MC341-DS1-111 Reference Manual (Hardware)
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31
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Digital Filter Setting Time
Set the digital filter time to 0 – 20 (00h - 14h).
Setting the digital filter time to 0 disables the function of filtering (0 is set as default and upon turning
on the power).
Setting Data (n)
Digital Filter Time
Setting Data (n)
Digital Filter Time
0(00h)
Default setting
The filter function is
unused
11(0Bh)
256μ
sec
1(01h)
0.25μ
sec
12(0Ch)
512μ
sec
2(02h)
0.5μ
sec
13(0Dh)
1.024msec
3(03h)
1μ
sec
14(0Eh)
2.048msec
4(04h)
2μ
sec
15(0Fh)
4.096msec
5(05h)
4μ
sec
16(10h)
8.192msec
6(06h)
8μ
sec
17(11h)
16.384msec
7(07h)
16μ
sec
18(12h)
32.768msec
8(08h)
32μ
sec
19(13h)
65.536msec
9(09h)
64μ
sec
20(14h)
131.072msec
10(0Ah)
128μ
sec
-
-
The following lists the relation between digital filter time and setting data.
Digital Filter Time [sec] = 2n/(8x106)
n: Setting Data (0 - 20)
CAUTION
The digital filter applies to all input channels; it cannot apply to only specific input pins.
To pass input signal without fail, the pulse width should be twice or larger than setting filter
time.
A digital filter doesn't work effectively if the filter time is set (setting data: 1-10) shorter than
the opto-coupler response time.
ATTENTION
Le filtre numérique s’applique à tous les canaux d’entrée; il ne peut pas se limiter uniquement
à des broches d’entrée spécifiques.
Pour transmettre correctement un signal d’entrée, la largeur de l’impulsion doit être le double
du délai réglé pour le filtre.
Un filtre numérique ne fonctionne pas de manière efficace si le filtre numérique est (données
de réglage : 1 à 10) inférieur au temps de réponse du photocoupleur.
