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K-22
4 Programming
4.6 Averaging Time
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD-PNK-ADP (4-channel Resistance Thermometer Data Input)
4.6 Averaging Time
Setting range: 1 to 4095
Initial value: K64
Numeric data type: Decimal (K)
If the averaging time is set for the PNK-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
3U, FX3UC Series PLC
•FX
3G 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 FX3U, FX3UC 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
Special data register
Description
1st 2nd
D8284 D8294 Averaging time for channel-1 data
D8285 D8295 Averaging time for channel-2 data
D8286 D8296 Averaging time for channel-3 data
D8287 D8297 Averaging time for channel-4 data
M8000
Normally
ON
FNC 12
MOV
K32 D8264
FNC 12
MOV
K128 D8265
Sets the averaging time to "32" for the channel-1
data of the 1st analog special adapter.
Sets the averaging time to "128" for the channel-2
data of the 1st analog special adapter.