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5 Buffer Memory (BFM)
5.3 Buffer Memory List (BFM)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD/FX3UC-4AD (4-channel Analog Input)
5.3 Buffer Memory List (BFM)
4AD 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 its data.
*2. To specify the input mode of each channel, set each digit using hexadecimal numbers 0 to 8 and F.
*3. Use b0 to b3.
BFM number Description Setting range Initial value Data type Reference
#0
*1
Input mode setting for channels 1 to 4 *2 H0000 at delivery
Hexadeci-
mal
Subsection
5.4.1
#1 Not used - - - -
#2 Averaging time units for channel 1 1 to 4095 K1 Decimal
Subsection
5.4.2
#3 Averaging time units for channel 2 1 to 4095 K1 Decimal
#4 Averaging time units for channel 3 1 to 4095 K1 Decimal
#5 Averaging time units for channel 4 1 to 4095 K1 Decimal
#6 Channel-1 digital filter setting 0 to 1600 K0 Decimal
Subsection
5.4.3
#7 Channel-2 digital filter setting 0 to 1600 K0 Decimal
#8 Channel-3 digital filter setting 0 to 1600 K0 Decimal
#9 Channel-4 digital filter setting 0 to 1600 K0 Decimal
#10 Channel-1 data (current data or average data) - - Decimal
Subsection
5.4.4
#11 Channel-2 data (current data or average data) - - Decimal
#12 Channel-3 data (current data or average data) - - Decimal
#13 Channel-4 data (current data or average data) - - Decimal
#14 to #18 Not used - - - -
#19
*1
Data change disable
Disables adjustment of the following buffer
memory locations:
• Input mode specification (BFM #0)
• Initialization function (BFM #20)
• Input characteristics writing (BFM #21)
• Convenient functions (BFM #22)
• Offset data (BFM #41 to #44)
• Gain data (BFM #51 to #54)
• Automatic transfer-to data register
specification (BFM #125 to #129)
• Data history sampling time setting (BFM #198)
To enable data
change: K2080
To disable data
change: Value
other than K2080
K2080 at delivery Decimal
Subsection
5.4.5
#20
Initialization function:
Set "K1" in this buffer memory to perform
initialization. At the completion of initialization,
buffer memory will be automatically reset to
"K0".
K0 or K1 K0 Decimal
Subsection
5.4.6
#21
Input characteristics writing:
Write the input characteristics offset/gain value.
At the completion of writing, buffer memory will
be automatically reset to "H0000" (b0 to b3:
OFF).
*3 H0000
Hexadeci-
mal
Subsection
5.4.7