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5 Buffer Memory (BFM)
5.3 Buffer Memory List (BFM)
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4DA (4-channel Analog Output)
5.3 Buffer Memory List (BFM)
FX3U-4DA incorporates the following buffer memories.
→ For a detailed description of the buffer memory, refer to Section 5.4 and subsequent sections.
*1. If power failure occurs, the EEPROM will retain the data.
*2. Specify the output mode of each channel setting one of hex code 0 to 4 and F in each digit.
*3. Specify the data to be output from each channel upon PLC stop setting one of hex code 0 to 2 in each
digit.
*4. Use b0 to b3.
BFM number Description Setting range Initial value Data type Reference
#0
*1
Output mode setting for channels 1 to 4 *2 H0000 at delivery
Hexadeci-
mal
Subsection
5.4.1
#1 Channel 1 output data
Depending on the
mode used
K0 Decimal
Subsection
5.4.2
#2 Channel 2 output data K0 Decimal
#3 Channel 3 output data K0 Decimal
#4 Channel 4 output data K0 Decimal
#5
*1
Output setting upon PLC stop *3 H0000
Hexadeci-
mal
Subsection
5.4.3
#6 Output status - H0000
Hexadeci-
mal
Subsection
5.4.4
#7, #8 Not used - - -
-
#9
Command to write offset/gain setting value of
channels 1 to 4
*4 H0000
Hexadeci-
mal
Subsection
5.4.5
#10
*1
Channel-1 offset data (Unit: mV or μA)
Depending on the
mode used
Depending on
the mode used
Decimal
Subsection
5.4.6
#11
*1
Channel-2 offset data (Unit: mV or μA) Decimal
#12
*1
Channel-3 offset data (Unit: mV or μA) Decimal
#13
*1
Channel-4 offset data (Unit: mV or μA) Decimal
#14
*1
Channel-1 gain data (Unit: mV or μA)
Depending on the
mode used
Depending on
the mode used
Decimal
Subsection
5.4.6
#15
*1
Channel-2 gain data (Unit: mV or μA) Decimal
#16
*1
Channel-3 gain data (Unit: mV or μA) Decimal
#17
*1
Channel-4 gain data (Unit: mV or μA) Decimal
#18 Not used - - - -
#19
*1
Setting change prohibition
To permit data
change: K3030
To disable data
change: Value
other than K3030
K3030 at delivery Decimal
Subsection
5.4.7
#20
Initialization function:
Set "K1" in this buffer memory to perform
initialization. At the completion of initialization,
the "K0" will be automatically set.
K0 or K1 K0 Decimal
Subsection
5.4.8
#21 to #27 Not used - - - -
#28
Disconnection detection status (Valid only in
current mode selection)
- H0000
Hexadeci-
mal
Subsection
5.4.9
#29 Error status - H0000
Hexadeci-
mal
Subsection
5.4.10
#30 Model code K3030 - K3030 Decimal
Subsection
5.4.11
#31 Not used - - - -