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MELSEC-Q
3 SPECIFICATIONS
3.2 Function List
Table 3.3 lists the functions of the A/D converter modules.
Table 3.3 Function list
Item
Function
Reference section
A/D conversion
enable/disable setting
(1) Specifies whether to enable or disable the A/D conversion for each
channel.
(2) The conversion speed is 10ms regardless of the number of conversion
enabled channels.
Section 3.4.2
A/D conversion method
(1) Sampling processing
The A/D conversion for analog input values is performed successively for
each channel, and the digital output value is output upon each conversion.
(2) Averaging processing
(a) Time averaging
A/D conversion is averaged in terms of time on a channel basis and a
digital average value is output.
(b) Count averaging
A/D conversion is averaged in terms of count on a channel basis and a
digital average value is output.
(c) Move averaging
The specified number of digital output values measured per sampling time
are averaged.
(3) Primary delay filter
A digital output value is smoothed according to the preset time constant.
Section 3.2.1
Maximum and
minimum values hold
function
(1) The maximum and minimum values of the digital output values is retained
in the module.
Section 3.2.2
Input signal error
detection function
(1) The voltage/current outside the setting range is detected.
Section 3.2.3
Warning output function
(1) Process alarm
A warning is output if a digital output value falls outside the setting range.
(2) Rate alarm
A warning is output if the varying rate of a digital output value falls outside
the preset varying rate range.
Section 3.2.4
A/D conversion starting
time setting function
(Q62AD-DGH only)
(1) Setting the A/D conversion starting time allows A/D conversion to be
started at the point when the output of the 2-wire transmitter stabilizes.
Section 3.2.5
Supply power ON/OFF
function
(Q62AD-DGH only)
(1) The power supply to the 2-wire transmitter can be switched ON/OFF
channel by channel.
(2) Power is supplied to the channel set for "Conversion enable" in the A/D
conversion enable/disable setting (buffer memory address 0: Un\G0).
Section 3.4.2
Online module change (1) The module can be changed without the system being stopped.
Chapter 7
Содержание GX Configurator-AD
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