Mitsubishi Electric NZ2EX2B-60AD4 User Manual page 94

(b) With a conversion speed of 400μs
Between the conversion processing (400μs) of each channel, processing time (100μs) is generated. Therefore,
the sampling period is given by the following:
Sampling period = (Conversion speed (400μs) + Processing time (100μs)) × Number of conversion enabled
channels
Ex. Assuming that the conversion speed setting is 400μs and the number of conversion enabled channels is
4 for both the main A/D converter module and the extension A/D converter module
Main A/D converter module
(conversion enabled
channels: CH1 to CH4)
Extension A/D converter
module (conversion enabled
channels: CH1 to CH4)
Sampling period of the main A/D converter module = (400μs + 100μs) × 4 = 2000μs =2ms
Sampling period of the extension A/D converter module = (400μs + 100μs) × 4 = 2000μs =2ms
(c) With a conversion speed of 1ms
With a conversion speed of 1ms, the time interval is 1ms including the processing time (100μs). Therefore, the
sampling period is given by the following:
Sampling period = Conversion speed (1ms) × Number of conversion enabled channels
Ex.
Assuming that the conversion speed setting is 1ms and the number of conversion enabled channels is 4
for both the main A/D converter module and the extension A/D converter module
Main A/D converter module
(conversion enabled
channels: CH1 to CH4)
Extension A/D converter
module (conversion enabled
channels: CH1 to CH4)
Sampling period of the main A/D converter module = 1ms × 4 = 4ms
Sampling period of the extension A/D converter module = 1ms × 4 = 4ms
92
400μs 100μs
CH1
Conversion Processing Conversion
processing time processing
Sampling period of the extension A/D converter module
CH1
Conversion Processing Conversion
processing time processing
1ms
CH1
Conversion Processing Conversion
processing time processing
Sampling period of the extension A/D converter module
CH1
Conversion Processing Conversion
processing time processing
Sampling period of the main A/D converter module
400μs 100μs 400μs
CH2 CH3
Processing Conversion
time processing
CH2 CH3
Processing Conversion
time processing
Sampling period of the main A/D converter module
1ms
CH2 CH3
Processing Conversion
time processing
CH2 CH3
Processing Conversion
time processing
100μs 400μs
CH4
Processing Conversion
time processing
CH4
Processing Conversion
time processing
1ms 1ms
CH4
Processing Conversion
time processing
CH4
Processing Conversion
time processing
100μs
Processing
time
Processing
time
Processing
time
Processing
time