Mitsubishi Electric NZ2EX2B-60AD4 User Manual page 93

(1) When an extension module is not connected or an extension I/O module is
connected
The sampling period is given by the following:
Sampling period = Conversion speed × Number of conversion enabled channels
Ex.
Assuming that the conversion speed setting is 100μs and the number of conversion enabled channels is
4
Sampling period of the main A/D converter module
100μs
Main A/D converter module
CH1
(conversion enabled
Conversion
channels: CH1 to CH4)
processing
Sampling period of the main A/D converter module = 100μs × 4 = 400μs
(2) When an extension A/D converter module is connected to a main A/D
converter module
When an extension A/D converter module is connected to a main A/D converter module, processing time (100μs)
is generated between the conversion processing of each channel.
(a) With a conversion speed of 100μs
Between the conversion processing (100μs) of each channel, processing time (100μs) is generated. Therefore,
the sampling period is given by the following:
Sampling period = (Conversion speed (100μs) + Processing time (100μs)) × Number of conversion enabled
channels
Ex.
Assuming that the conversion speed setting is 100μs and the number of conversion enabled channels is
4 for both the main A/D converter module and the extension A/D converter module
100μs
Main A/D converter module
CH1
(conversion enabled
Conversion
channels: CH1 to CH4)
processing
Extension A/D converter
CH1
module (conversion enabled
Conversion
channels: CH1 to CH4)
processing
Sampling period of the main A/D converter module = (100μs + 100μs) × 4 = 800μs
Sampling period of the extension A/D converter module = (100μs + 100μs) × 4 = 800μs
100μs 100μs 100μs
CH2 CH3 CH4
Conversion Conversion Conversion
processing processing processing
Sampling period of the main A/D converter module
100μs 100μs 100μs
CH2
Processing Conversion Processing
time processing time
Sampling period of the extension A/D converter module
CH2
Processing Conversion Processing
time processing time
CHAPTER 8 FUNCTIONS
100μs 100μs 100μs
CH1 CH2 CH3
Conversion Conversion Conversion
processing processing processing
100μs 100μs 100μs
CH3 CH4
Conversion Processing Conversion
processing time processing
CH3 CH4
Conversion Processing Conversion
processing time processing
100μs
CH4
Conversion
processing
8
100μs
Processing
time
Processing
time
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