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Product Nomenclature and Function
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CPS-PC341MB-ADSC1-9201 Reference Manual (Hardware)
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34
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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] = 2
n
/(8x10
6
)
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 doesnt work effectively if the filter time is set (setting data: 1 -10) shorter than
the opto-coupler response time.
The signal level remains the same over
the digital filter setting time, the digital filter
recognizes that signals as normal and
changes the filter output signal level.
