Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

5 Changing of Input/output Characteristics

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-3A-ADP (2-channel analog Input, 1-channel analog output)

This section describes an example of a program that can change the digital value range from 400 to 2000
(when analog output range is 1 to 5V) to 0 to 10000.
A specified digital value is inputted into D120.

• For example, create the following program to change the digital output of the 1st analog special adapter.

0

10000

Specified digital output

value to be actually

subject to D/A conversion

2000

(5V)

400

(1V)

Desired digital value (D120)

Voltage output characteristics
(product specifications)

Digital value characteristics
to be changed

X-axis

0

4000

10V

Analog output

Digital value input

400

2000

5V

1V

Y-axis

M8001

M8262

Sets the output mode of channel 1 to the voltage output
mode.

M8002

FNC 12

MOV

K2

D50

FNC 12

MOV

K0

D51

FNC 12

MOV

K400

D52

FNC 12

MOV

K10000

D53

FNC 12

MOV

K2000

D54

M8000

Program for setting scaling instruction data table

The result of operation by scaling instruction will be stored
in the D8262.

M8266

Sets the output holding function for channel 1.

Item

Number of points

Start
point

X-

coordinate

Y-

coordinate

End

point

X-

coordinate

Y-

coordinate

Description

Sets the number of points.
Digital value of specified
start point on X-axis

Digital value of desired D/A
conversion start point

2

Value

Device

D50

0

D51

400

D52

Digital value of specified end
point on X-axis

Digital value of desired D/A
conversion end point

10000

D53

2000

D54

FNC 259

SCL

D120

D50

D8262

Normally 
OFF