Bfm#1 To #4: Output Data - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U
FX -4DA (4-channel Analog Output)
3U
2. Caution regarding EEPROM writing
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
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).
5.4.2

BFM#1 to #4: Output data

Input the digital values corresponding to the analog signals to be output in BFM#1 to #4.
BFM number
#1
#2
#3
#4
5.4.3 BFM#5: Output setting upon PLC stop
It is possible to set the output conditions from channel 1 to 4 when the PLC is in the stopped state.
H
ch4
ch3
Set value (HEX)
0
1
2
3 to F
*1. The output conditions depend on the output mode (BFM#0).
1. Cautions regarding output conditions setting upon PLC stop
• 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.
2. Caution regarding EEPROM writing
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
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).
E-22
PLC User's Manual - Analog Control Edition
3UC
-4DA EEPROM.
3U
Description
Data to be output from channel 1
Data to be output from channel 2
Data to be output from channel 3
Data to be output from channel 4
ch1
ch2
Output conditions
The final value during running is held.
The offset signal is output.
The output data set in BFM#32 to #35 are output.
Invalid (setting values unchanged)
-4DA.
3U
*1
*1
5 Buffer Memory (BFM)
5.4 Buffer Memory Details
Initial value: K0
Numeric data type: Decimal (K)
Initial value: H0000
Numeric data type: Hexadecimal (H)