Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
B-48
5 Buffer Memory (BFM)
5.4 Buffer Memory Details
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD/FX
3UC
-4AD (4-channel Analog Input)
5.4.28 BFM #199: Data history resetting/stoppage
Initial value: H0000
Numeric data type: Hexadecimal (H)
The data history resetting function and the data history stoppage function are assigned to the bits of BFM #199.
1. Data history resetting function (b0 to b3)
The sampled history data can be reset for each channel.
Turn on a bit to reset all the history data (1st to 1,700th) of the corresponding channel. (Note that two or more
bits can be turned on at a time.)
When the data reset is complete, the corresponding bit will turn off automatically.
Turn on a bit to reset all the history data (1st to 1,700th) of the corresponding channel. (Note that two or more
bits can be turned on at a time.)
When the data reset is complete, the corresponding bit will turn off automatically.
2. Data history stoppage function (b8 to b11)
Data sampling can be temporarily stopped for each channel.
Turn on a bit to temporarily stop sampling history data for the corresponding channel. (Note that two or more
bits can be turned on at a time.)
Turn off the bit to restart sampling of history data.
Turn on a bit to temporarily stop sampling history data for the corresponding channel. (Note that two or more
bits can be turned on at a time.)
Turn off the bit to restart sampling of history data.
3. Function assignment to each bit of BFM #199
4. Caution regarding data history resetting
• When a bit is turned on, the corresponding data history will be reset.
Bit No.
Channel number
Description
b0
ch1
Data history resetting function
b1
ch2
b2
ch3
b3
ch4
b4 to b7
Not used.
b8
ch1
Data history stoppage function
b9
ch2
b10
ch3
b11
ch4
b12 to b15
Not used.