Mitsubishi Q64AD User Manual download pdf (Page 15)

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MELSEC-Q

1 OVERVIEW

This User's Manual describes the specifications, handling and programming methods

for the Q64AD analog-digital converter module (hereinafter referred to as the Q64AD),

Q68ADV analog-digital converter module (hereinafter referred to as the Q68ADV), and

Q68ADI analog-digital converter module (hereinafter referred to as the Q68ADI), which

are used in conjunction with MELSEC-Q Series CPUs.

In this manual, the Q64AD, Q68ADV, and Q68ADI are collectively referred to as the

A/D converter modules.

1.1 Features

(1) Select the type of module according to the application.

• Q64AD

...........

4 channels, where the voltage input or current input can be

selected for each channel.

• Q68ADV

........

8 channels, all of which are voltage input.

• Q68ADI

..........

8 channels, all of which are current input.

(2) High speed conversion

Conversion is performed at a high speed of 80 µ s/channel. Also, the

temperature drift compensation function can be performed using a processing

time of "conversion time for all channels + 160

s".

(3) High degree of accuracy

The degree of accuracy for the conversion process is ± 0.1% (When the ambient

temperature is 25 ± 5 °C).

(4) Changing the resolution mode

The resolution mode can be changed according to the application, and digital-

value resolution settings of 1/4000, 1/12000 or 1/16000 can be selected.

(5) Changing the input range

The input range 1 can easily be set from the GX Developer.

1: Input range refers to the type of offset/gain settings. The most frequently

used range is set as the default but the user can also set the offset/gain.

(6) Easy settings using the utility package

A utility package is sold separately (GX Configurator-AD).

The utility package is not a required item, however, it is useful for on-screen

setting of the intelligent function module parameters (initial setting/auto refresh

setting). In addition, FB

can be generated automatically from the intelligent

function module parameters that have been set up and used in a sequence

program.

1: FB is the function for making a circuit block used in a sequence program

repeatedly a part (FB) to use it in the sequence program.

This function can improve the efficiency of program development and

minimize program bugs to improve program qualities.

For the details of FB, refer to "GX Developer Version 8 Operating Manual

(Function Block)."

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