Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

4 Programming

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4AD-PNK-ADP (4-channel Resistance Thermometer Data Input)

FX

3U

-4A
D

-P

NK

          
         

-A

D

P

FX

3U

-4AD

-TC

        

        

   -

A

D

P

PI

D

 In

st

ru

ctio

n

           (F

N

C

 88
)

Create the following basic program to read out the temperature measurement data.
• For  FX

3G

, FX

3U

, FX

3UC

 Series PLC

The following program will select Pt1000 and will store the temperature measurement data (

°C

) of channels 1 

and 2 of the 3rd

*1

 adapter in the D100 and the D101, respectively. The averaging time will be set to "32" for 

channel 1, and "128" for channel 2.

Even if the temperature measurement data is not stored to D100 or D101, data registers D8280 or D8281 can 
be directly used in the arithmetic operation instruction or a PID instruction.

*1.

"1st" for the FX

3G

 PLC.

M8002

M8001

M8280

Sets the temperature unit to
centigrade (

°C)

M8002

FNC 12

MOV

K32

D8284

FNC 12

MOV

K128

D8285

Sets the averaging time to "32" for
channel-1 data

Sets the averaging time to "128" for
channel-2 data

M8281

Selects Pt1000

RST

M6

RST

M7

Error status of 3rd

*1

 analog special

adapter
b6 = OFF (hardware error)

Error status of 3rd

*1

 analog special

adapter
b7 = OFF (communication data error)

M8000

FNC 12

MOV

D8280

D100

FNC 12

MOV

D8281

D101

Stores the current value of the
channel-1 measurement
temperature data to D100.

Stores the current value of the
channel-2 measurement
temperature data to D101.

M8000

Normally
ON

Initial
pulse

MOV

D8288

K4M0

MOV

K4M0

D8288