Conversion Speed And Conversion Period - Mitsubishi Electric NZ2GF2BN-60DA4 User Manual

8.5

Conversion Speed and Conversion Period

Conversion speed is the rate at which the D/A converter module converts and outputs digital values.
The conversion period is the period for D/A conversion in a channel.
The following figure shows the relationship between conversion speed and a conversion period.
The conversion period 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 Extension module
• Not connected
• Extension I/O
module
Main D/A converter
Extension D/A
module
converter module
Extension A/D
converter module
• Not connected
• Extension I/O
module
Main A/D converter Extension A/D
module converter module
Extension D/A
converter module
*1 For an A/D converter module, this column corresponds to the sampling period.
*2 For details, refer to the following:
• CC-Link IE Field Network Analog-Digital Converter Module User's Manual
(1) When an extension module is not connected or an extension I/O module is
connected
The conversion speed is 100s/channel. The conversion period is given by the following:
Conversion period = Conversion speed (100s)  Number of conversion enabled channels
Ex.
Assuming that the number of conversion enabled channels is 4
Main D/A converter module
(conversion enabled
channels: CH1 to CH4)
Conversion period = 100s  4 = 400s
88
Conversion
speed
CH1
Processing including
conversion processing
Conversion
processing of other channels
Conversion period
: Period for conversion processing of one channel
Conversion
speed setting



• 100s
• 400s
• 1ms
100s
400s
1ms
• 100s
• 400s
• 1ms
Conversion period of the main D/A converter module
100μs 100μs 100μs
CH1 CH2 CH3
Conversion Conversion Conversion
processing processing processing
CH1
Conversion
processing
*1
Conversion period
100s  Number of conversion
enabled channels
200s  Number of conversion
enabled channels
200s  Number of conversion
enabled channels
Conversion speed  Number of
conversion enabled channels
200s  Number of conversion
enabled channels
500s  Number of conversion
enabled channels
1ms  Number of conversion
enabled channels
200s  Number of conversion
enabled channels
100μs 100μs
CH4 CH1
Conversion Conversion Conversion
processing processing processing
Reference
Page 88, Section 8.5 (1)
Page 89, Section 8.5 (2)
Page 90, Section 8.5 (3)
*2
Page 90, Section 8.5 (4)
100μs 100μs 100μs
CH2 CH3 CH4
Conversion Conversion
processing processing