Rockwell Automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE - Manual (Page 58)

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Publication 1771Ć6.5.116 - June 1996
This feature (oversampling) is set in block transfer word 40. This
word specifies the number of times a channel will be sampled and
the results averaged. Legal values of the number of oversamples are:
0, 1, 2, 4, 8, 16, 32, 64, 128, and 256. The format of the data in
this field can be BCD or binary.
Binary Oversample BCD Oversample
0 0000
1 0001
2 0002
4 0004
8 0008
16 0016
32 0032
64 0064
128 0128
256 0256
If 0 oversamples are chosen, or the block transfer write length is
less than 40, the oversample selection will default to 8.
Block transfer write word 41 is the channel sampling disable word. If
you do not want to include a channel in your sample, set the
corresponding bit to 1, and the channel will NOT be sampled. (In
differential mode, channels 9 through 16 are ignored.) If the
channels are not set (0), or the block transfer write length is less
than 41, all channels will be sampled.
A disabled channel will return 0 in the block transfer read.
Oversampling
Channel Disable