Mitsubishi Q64DAN User Manual download pdf (Page 12)

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MELSEC-Q

1 OVERVIEW

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

for the Q62DA type digital-analog converter module (hereinafter referred to as the

Q62DA), the Q64DA type digital-analog converter module (hereinafter referred to as

the Q64DA), the Q68DAV type digital-analog converter module (hereinafter referred

to as the Q68DAV) and the Q68DAI type digital-analog converter module (hereinafter

referred to as the Q68DAI) which are used in conjunction with MELSEC-Q series

CPU module (hereinafter referred to as the PLC CPU).

In this manual, the Q62DA, Q64DA, Q68DAV and Q68DAI are collectively referred to

as the D/A (Digital-Analog) converter modules.

1.1 Features

(1) Available models

• Q62DA

........

2 channels: Voltage or current output can be selected for each

channel.

• Q64DA

........

4 channels: Voltage or current output can be selected for each

channel.

• Q68DAV

........8 channels: All of which are voltage output.

• Q68DAI

........

8 channels: All of which are current output.

(2) High-speed conversion processing

Conversion processing is performed at a speed of 80 s/channel.

(3) High degree of accuracy

The conversion accuracy 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 output range

The output range

can easily be changed using GX Developer

1 The output range refers to the type of offset/gain settings. The most

frequently used range is set as the default but the user can also specify their

own offset/gain settings.

(6) Synchronous output function

This function sets a constant time (120 s) until the analog value is output after

the digital value is written from the PLC CPU. Highly accurate analog control can

be achieved by combining this function with a constant cycle execution type

program for the PLC CPU or the constant scan function

2 The constant scan function executes the sequence program within a fixed

time interval.

(7) Analog output HOLD/CLEAR function

This function is set to either retain or clear the analog output value when the CPU

module is in the STOP status or when a stop error occurs.

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Mitsubishi Q64DAN User Manual Page 12

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