Averaging Time - Mitsubishi Electric MELSEC-FX3S Series Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U
FX -2AD-BD (2-channel Analog Input)
3G
4.5

Averaging Time

If the averaging time is set for the 2AD-BD, the average data will be stored as the input data. The averaging
time can be set for each channel.
Set the averaging time in the following special data registers:
• FX Series PLC
3S
Special data register
D8264
D8265
• FX Series PLC
3G
Special data register
Board A
D8264
D8265
1. Cautions regarding averaging time setting
• If the averaging time is set to "1", the immediate data is stored to the special data register.
• If the averaging time is set in the range from 2 to 4095, the average value will be calculated to conform to
the set averaging time, and the average value obtained will be stored in the special data register.
• After turning the PLC power on, the current data is stored to special data registers until the number of data
items reaches the set averaging time. After this, the average data will be stored.
• Set the averaging time in the range from 1 to 4095. If the set value is outside the setting range, an 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".
2. Program Example (For FX
M8000
Normally
ON
D-18
PLC User's Manual - Analog Control Edition
3UC
Averaging time for channel-1 data
Averaging time for channel-2 data
Board B
D8274 Averaging time for channel-1 data
D8275 Averaging time for channel-2 data
→ For a detailed description of the error status, refer to Section 6.5.
Series PLC)
3G
FNC 12
K1
MOV
FNC 12
K5
MOV
Description
Description
Sets the averaging time for
channel-1 of the board A
D8264
to 1.
Sets the averaging time for
channel-2 of the board A
D8265
to 5.
4 Programming
4.5 Averaging Time
Setting range: 1 to 4095
Initial value: K1
Numeric data type: Decimal (K)