Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

I-20

4 Programming

4.5 Averaging Time

/FX

3UC

PLC User's Manual - Analog Control Edition

-4AD-PT-ADP (4-channel Platinum Resistance Thermometer Data Input)

4.5

Averaging Time

Setting range: 1 to 4095

Initial value: K1

Numeric data type: Decimal (K)

If the averaging time is set for the PT-ADP, the averaged temperature measurement data will be stored in the
D8260 to D8263, D8270 to D8273, D8280 to D8283, and D8290 to D8293. The averaging time can be set for
each channel.
Set the averaging time in the following special data registers:
• FX

, FX

3UC

Series PLC

• FX

Series PLC

1. Cautions regarding averaging time setting

• If the averaging time is set to "1", the immediate data will be stored in the temperature measurement

special data register.

• If the averaging time is set to "2" or more, the average value will be calculated in accordance with the set

averaging time, and the average value obtained will be stored in the temperature measurement special
data register.

• After turning the PLC power on, the average data will be stored in the temperature measurement special

data registers (D8260 to D8263, D8270 to D8273, D8280 to D8283, and D8290 to D8293) until the number
of data items is increased to the set averaging time.

• Set the averaging time in the range from 1 to 4095. If the set value is outside the setting range, the error

signal will be output.

• If the averaging time is set to "0" or smaller, the PLC will perform as if the averaging time is set to "1".

If the averaging time is set to "4096" or larger, the PLC will perform as if the averaging time is set to "4096".

→ For a detailed description of error status, refer to Section 5.5

2. Program Example (For FX

, FX

3UC

Series PLC)

Special data register

Description

1st

2nd

3rd

4th

D8264

D8274

D8284

D8294

Averaging time for channel-1 data

D8265

D8275

D8285

D8295

Averaging time for channel-2 data

D8266

D8276

D8286

D8296

Averaging time for channel-3 data

D8267

D8277

D8287

D8297

Averaging time for channel-4 data