Conversion Method - Mitsubishi Electric NZ2GF2S-60MD4 User Manual

7.3

Conversion Method

Set sampling processing or averaging processing for each channel.
Sampling processing
Analog input values and temperature input values are converted at every conversion cycle and stored in the remote register
as digital output values. Processing does not depend on the number of conversion enabled channels and the conversion
cycle of sampling processing is fixed at 40ms.
Averaging processing
Averaging processing is performed on digital output values for each channel. The values obtained in averaging processing
are stored in the remote register. The following three types of averaging processing are provided.
• Time average
• Count average
• Moving average
■Time average
The conversion is performed for a set period of time and averaging processing is performed on the total value excluding the
maximum and the minimum values. The values obtained in averaging processing are stored in the remote register.
The number of processing times within a set period of time changes depending on the setting time.
Processing times = Setting time  Conversion speed (40ms)
Ex.
When the setting time is 250ms
250 (ms)  40 (ms) = 6.25  6 (times) Values after the decimal point are rounded down.
This means that the measurement is conducted six times, after which the mean value is output.
Set a value of 160ms or more for the time average, calculated as follows: lowest processing frequency (4
times)  conversion speed (40ms).
■Count average
The conversion is performed a set number of times and averaging processing is performed on the total value excluding the
maximum and the minimum values. The values obtained in averaging processing are stored in the remote register.
The time at which the mean value obtained by the count average is stored in the remote register changes depending on the
set number of times.
Processing times = Set number of times  Conversion speed (40ms)
Ex.
When the number of the averaging processing is set to 5
5 (times)  40 (ms) = 200 (ms)
The mean value is output every 200ms.
Because the count average requires a sum of at least two counts excluding the maximum and minimum
values, set four or larger number of counts.
7 FUNCTIONS
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7.3 Conversion Method
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