Fastech Ezi-IO CC-Link IE TSN DIO, Руководство пользователя

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8.4 Input filter
8.4.1 Explanation
This function prevents the change of data when there is high frequency noise such as chattering included in the
incoming signals.
Ezi-IO CC-Link IE TSN DIO samples input signals every 200us. When the same input signal as the predetermined
value of the input filter is sampled consecutively, it accepts it as valid input data.
Figure 8-12. Input filter motions
Input filter values are between 0~200 and there could be a maximum of 40ms filter delay time depending on the
setting value.
8.4.2 Setting Method
The filter value can be set by adjusting the remote register output value, RWw0.
Input
Signal
t
1
0
Input
Data
t
1
0
1 2
Filter
Count
0 1 0
Input
Signal
t
1
0
Input
Data
t
1
0
1 2
Filter
Count
3
Filter delay time