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FX2N-8AD Analog input block Buffer Memory (BFM) 8
8-16
Update of average data
• When the number of times of averaging (BFM #2 to BFM #9) is set to "400" or less, the
average (BFM #10 to BFM #17) is updated every time the A/D conversion processing is
performed.
At this time, the average is always calculated by sampling of the A/D conversion values as
many as the set number of times of averaging from the latest one.
The update time is as follows:
Average data update time = (A/D conversion time) x Number of channels
• When the number of times of averaging (BFM #2 to BFM #9) is set to "401" or more, the
average (BFM #10 to BFM #17) is updated every time A/D conversion is performed by as
many as the set number of times of averaging.
The update time is as follows:
Average data update time = (A/D conversion time) x Number of channels x Number of times
of averaging
In either case above, until the number of times of A/D conversion reaches the set number of
times of averaging for the first time, the average at each time point is stored in BFM #10 to
BFM #17.