<Toc> <Ind>
<2. Functions and Operation >
2-9
IM 34M6H54-01E
1st Edition : Feb.01,1999-00
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Input filter
If the module accepts dry-contact input pulses which may contain chattering noise, and the
counter counts these pulses, accurate counter values will not be obtained. To obtain a
correct counter value, use an input filter. Whether or not an input filter is used for each
channel can be set. Input filter constants are common to all input channels. For applica-
tions where the modules are used in a location with undesired electrical disturbance, set an
appropriate filter using application software.
Pulse input
$FFFF
$00
$02
$06
Preset value 2
Preset value 1
0
Counter enabled
Y
uuu
49 *
1
Input functionality
Counter value resets to 0 (zero)
X
uuu
03 *
1
X03 (reset)
Y
uuu
35 *
1
F0206.EPS
Counter
value
*1: The relay numbers shown above are for channel 1.
Figure 2.6 Counter Operations (1)
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