Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

5 Buffer Memory (BFM)

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4DA (4-channel Analog Output)

If data is written to BFM #0, #5, #10 to #17, #19, #32 to #35, #50 to #54 or #60 to #63, the data will also be
written to the FX

3U

-4DA EEPROM.

Do not turn off the power immediately after writing values in these buffer memories.
The maximum number of EEPROM rewrites is 10,000 times. Therefore, when creating a program, do not
frequently write data to the above buffer memories (BFM).

Input the digital values corresponding to the analog signals to be output in BFM #1 to #4.

It is possible to set the output conditions from channel 1 to 4 when the PLC is in the stopped state.

* The output conditions depend on the output mode (BFM #0).

• While changing the setting values, the output is stopped, and H0000 is automatically written in the output 

status (BFM #6).
At the completion of change, the output status (BFM #6) will automatically change to H1111, and output 
will be restarted.

• If data is set in BFM #0, #5, #10 to #17, #19, #32 to #35, #50 to #54 or #60 to #63, the data will be written 

in the EEPROM of FX

3U

-4DA.

Do not turn off the power immediately after writing values in these buffer memories.
The maximum number of EEPROM rewritable times is 10,000 times. Therefore, when creating a program, 
do not frequently write data to the above buffer memories (BFM).

#1

Data to be output from channel 1

#2

Data to be output from channel 2

#3

Data to be output from channel 3

#4

Data to be output from channel 4

0

The final value during running is held.

1

The offset signal is output.*

2

The output data set in BFM #32 to #35 are output.*

3 to F

Invalid (setting values unchanged)

H

ch4

ch3

ch2

ch1