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Chapter 2.
SPECIFICATIONS
2.5.3
Average Processing
1) The Cause of Average Processing
Average processing of noise or abnormal analog input is used to stabilize system control.
2) Kinds of Average Processing
There are kinds of average processing, which are time average and number average.
(1) Time Average Processing
a) Setting Range
G3F-AD4A : 96 to 12,000 (ms)
G4F-AD2A : 40 to 20,000(ms)
b) On the time average processing, the number of average processing within the Set time is
determined according to the number of channels.
Set time
Processing number =
Used channels
Conversion speed
Ex) Used channels : 4,
Set time : 120 ms
G3F-AD4A : 120(4
3) = 10 count
G4F-AD2A : 120(4
5) = 6 count
c) When Set time divided by(Number of used channel
Conversion speed) makes the residue occur,
the processing number will be [ { average processing number ( the number of used
channel conversion speed) } + 1] by raising the residue.
Ex) Used channels: 4,
Set time : 200 ms
G3F-AD4A : 150(4
3) = 12 count + remain
6
13 count
G4F-AD2A : 150(4
5) = 7 count + remain
10
13 count
(2) Number Average Processing
a) Setting range
G3F - AD4A :
2 to 4000 (count)
G4F - AD2A :
2 to 4000 (count)
b) Number average processing period for writing digital value to the buffer memory is changed
according to the number of channels.
Processing time = Setting times
Number of enabled channels
Conversion speed
Ex) Used channels: 4, Average processing time: 50 count.
G3F - AD4A : 50
4
3 = 600 ms
G4F - AD2A : 50
4
5 = 1000 ms
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