Conversion Speed And Sampling Period - Mitsubishi Electric NZ2EX2B-60AD4 User Manual

8.5.1

Conversion speed and sampling period

Conversion speed is the rate at which an A/D converter module converts analog input values.
A sampling period is the period of conversion processing within the one channel.
A conversion period is the period of the update of a digital operation value with the A/D conversion method (sampling
processing or averaging processing) taken into account, and is equivalent to an integral multiple of the sampling
period. ( Page 95, Section 8.6)
The following figure shows the relationship between conversion speed and a sampling period.
The sampling cycle varies depending on the type of main analog module, the conversion speed, the type of extension
module, and the number of conversion enabled channels.
The following table shows the classification.
Main analog module
• Not connected
• Extension I/O module
Main A/D converter
Extension A/D converter module
module
Extension D/A converter module
• Not connected
• Extension I/O module
Main D/A converter
Extension A/D converter module
module
Extension D/A converter module
*1 For a D/A converter module, this column corresponds to the conversion period.
*2 For details, refer to the following:
•  CC-Link IE Field Network Digital-Analog Converter Module User's Manual
90
Conversion
speed
CH1
Processing including
Conversion
conversion processing
processing
of other channels
Sampling period
: Period for conversion processing of one channel
Conversion
Extension module
speed setting
• 100μs
• 400μs
• 1ms
100μs
400μs
1ms
• 100μs
• 400μs
• 1ms
−
−
−
CH1
Conversion
processing
Sampling period
Conversion speed × Number of
conversion enabled channels
200μs × Number of conversion
enabled channels
500μs × Number of conversion
enabled channels
1ms × Number of conversion
enabled channels
200μs × Number of conversion
enabled channels
100μs × Number of conversion
enabled channels
200μs × Number of conversion
enabled channels
200μs × Number of conversion
enabled channels
*1
Reference
Page 91, Section 8.5.1 (1)
Page 91, Section 8.5.1 (2) (a)
Page 92, Section 8.5.1 (2) (b)
Page 92, Section 8.5.1 (2) (c)
Page 93, Section 8.5.1 (3)
*2
Page 94, Section 8.5.1 (4)
*2