Function List - Mitsubishi Electric Melsec Q Series User Manual

3 SPECIFICATIONS

3.2 Function List

Item
A/D conversion enable/
disable setting
A/D conversion method
Maximum and minimum
value hold function
Temperature drift
compensation function
Resolution mode
Online module change
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Table 3.2 shows the function list of the A/D converter modules.
Table 3.2 Function list
(1) Specifies whether to enable or disable the A/D conversion for each
channel.
(2) By disabling the conversion for the channels that are not used, the
sampling time can be shortened.
(1) Sampling processing
The A/D conversion for analog input values is performed successively for
each channel, and Digital output value is output upon each conversion.
(2) Averaging processing
For each channel, A/D conversion values are averaged for the set number of
times or set amount of time, and the average value is output as a digital value.
(1) The maximum and minimum values of Digital output value is retained in
the module.
(1) Errors arising from changes in the ambient temperature of the module
are automatically compensated for to improve conversion accuracy.
(2) The temperature drift compensation function can be performed at (A/D
conversion time for all channels) + 160
(1) The resolution mode can be switched according to the application, and
digital-value resolution settings of 1/4000, 1/12000 or 1/16000 can be
selected.
(2) The resolution mode setting is applicable to all channels.
(3) Refer to Section 3.1.1 for Digital output value and maximum resolution in
normal resolution mode and high resolution mode.
(1) A module change is made without the system being stopped.
Function
s.
MELSEC-Q
Reference section
Section 3.4.2
Section 3.2.1
Section 3.2.2
——
Section 3.1.1
Section 4.5
Chapter 7
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