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CHAPTER 8 FUNCTIONS
8
8.3 A/D Conversion Method
Because the count average requires a sum of at least two counts, not counting the maximum and minimum values, the set
number of times should be set to 4 or more.
(c) Moving average
Takes the average of digital output values sampled over a set number of sampling cycles, and stores it to the
buffer memory.
Since the averaging processing is performed on a moving set of sampling processing, the most current digital
output values can be obtained.
The moving average processing for a set number of times of 4 is shown below:
(3) Setting procedure
(a) Sampling processing
1. Set "A/D conversion enable/disable setting" to "0: Enable".
Project window [Intelligent Function Module] module name [Parameter]
2. For "Averaging process setting", select "0: Sampling Processing".
1st storage (a)
1) + 2) + 3) + 4)
4
2) + 3) + 4) + 5)
4
3) + 4) + 5) + 6)
4
2nd storage (b) 3rd storage (c)
Data transition in buffer memory
1)
2)
3) 4)
5)
6)
7)
8) 9)
10) 11)
12)
0
0
(a) (b) (c)
3rd storage (c)
Time [ms]
2nd storage (b)
1st storage (a)
Sampling cycle
Digital output value
CH1 Digital output
value (Un\G11)
A/D conversion
completed flag (XE)
ON
20000
10000
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