Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 35

• Digital filter conversion cycle
The digital filter conversion cycle varies as follows depending on the setting value of the digital filter fluctuation range setting.
Number of A/D conversion enabled
channels
1
2
3
4
*2 The time average conversion cycle is as follows.
Time average conversion cycle =
Number of A/D conversion
(Variation width ÷ (
enabled channels
Values after the decimal point are omitted
If the above calculation result is smaller than [Minimum acquisition count (4 times)  Number of A/D conversion enabled channels 
Conversion speed], the time average conversion cycle is as follows.
Time average conversion cycle = Minimum acquisition count (4 times)  Number of A/D conversion enabled channels Conversion
speed
Ex.
If the channel used is only CH1 and the digital filter fluctuation range setting is 50000
Time average conversion cycle = ((50000  (1  80  10)) + 1)  1  80 = 5040 (s)
Since the calculation result is larger than or equal to [Minimum acquisition count (4 times)  Number of A/D conversion
enabled channels  Conversion speed], the time average conversion cycle is 5040 s.
Ex.
If the channel used is only CH1 and the digital filter fluctuation range setting is 1000
Time average conversion cycle = ((1000  (1  80  10)) + 1)  1  80 = 160 (s)
Since the calculation result is smaller than or equal to [Minimum acquisition count (4 times)  Number of A/D conversion
enabled channels  Conversion speed], the time average conversion cycle is 320 s.
Digital filter fluctuation range setting
80 Fluctuation range <800
800 Fluctuation range  200000
160 Fluctuation range <1600
1600 Fluctuation range  200000
240 Fluctuation range <2400
2400 Fluctuation range  200000
320 Fluctuation range <3200
3200 Fluctuation range  200000
× Conversion speed × 10))+1) ×
Conversion cycle
Sampling processing conversion processing
Time average conversion cycle
Sampling processing conversion processing
Time average conversion cycle
Sampling processing conversion processing
Time average conversion cycle
Sampling processing conversion processing
Time average conversion cycle
Number of A/D conversion
× Conversion speed
enabled channels
1
*2
*2
*2
*2
1 FX5-4AD
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1.4 Functions