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-PTW-ADP (4-channel Platinum Resistance Thermometer Data Input)

• FX

3G 

Series PLC

R: Read / W: Write

To switch the temperature unit of the PTW-ADP turn the special auxiliary relay ON for Fahrenheit (

°F) or OFF

for Centigrade (

°C).

To switch the temperature unit, use the following special auxiliary relays:
• FX

3U

, FX

3UC

 Series PLC

• FX

3G 

Series PLC

Special auxiliary relay

M8280

M8290

Selects the temperature unit.

R/W

Section 4.3

M8281 to 

M8289

M8291 to 

M8299

Unused (Do not use.)

-

-

Special data register

D8280

D8290

Channel-1 temperature 
measurement data

R

Section 4.4

D8281

D8291

Channel-2 temperature 
measurement data

R

D8282

D8292

Channel-3 temperature 
measurement data

R

D8283

D8293

Channel-4 temperature 
measurement data

R

D8284

D8294

Averaging time for channel 1 
(Setting range: 1 to 4095)

R/W

Section 4.5

D8285

D8295

Averaging time for channel 2 
(Setting range: 1 to 4095)

R/W

D8286

D8296

Averaging time for channel 3 
(Setting range: 1 to 4095)

R/W

D8287

D8297

Averaging time for channel 4 
(Setting range: 1 to 4095)

R/W

D8288

D8298

Error status

R/W

Section 4.6

D8289

D8299

Model code = 21

R

Section 4.7

M8260

M8270

M8280

M8290

Selection of temperature unit:
OFF: Centigrade (

°C)

ON: Fahrenheit (

°F)

M8280

M8290

Selection of temperature unit:
OFF: Centigrade (

°C)

ON: Fahrenheit (

°F)

1) To switch the temperature unit to centigrade (

°C)

     for the 1st adapter:

M8001

M8260

Normally OFF

2) To switch the temperature unit to Fahrenheit (

°F)

     for the 2nd adapter:

M8000

M8270

Normally ON