Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
E-29
5 Buffer Memory (BFM)
5.4 Buffer Memory Details
A
Comm
on I
te
te
ms
B
FX
3U
-4AD
FX
3UC
-4
A
D
C
FX
3U
-4A
D
D
-A
D
P
D
FX
3G
-2A
D
D
-BD
E
FX
3U
-4DA
F
FX
3U
-4D
A
A
-AD
P
P
G
FX
3G
-1D
A
A
-BD
H
FX
3U
-3
A-
ADP
I
FX
3U
-4
A
D
-P
T
-
A
D
P
J
FX
3U
-4A
D
D
-P
TW
-
A
A
D
P
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4DA (4-channel Analog Output)
5.4.11 BFM #30: Model code
Initial value (at delivery): K3030
Numeric data type: Decimal (K)
K3030 (fixed value) is stored as the model code.
5.4.12 BFM #32 to #35: Data to be output upon PLC stop
Initial value: K0
Numeric data type: Decimal (K)
To enable the output data set when the PLC stops, Set "2" for any digit in the output data (H0000) at PLC's
stop. Set the BFM values as follows.
stop. Set the BFM values as follows.
The setting range depends on the output mode.
1. Cautions regarding data output setting when PLC is in stop
• While changing the settings, the output is stopped, and H0000 is automatically written in the output status
(BFM #6).
After the completion of writing, the output status (BFM #6) will automatically change to H1111, and output
will be restarted.
After the completion of writing, the output status (BFM #6) will automatically change to H1111, and output
will be restarted.
• The analog values to be output depend on the output mode.
• When a value out of any of the above ranges is set, b5 of the error status (BFM #29) is turned on.
• When a value out of any of the above ranges is set, b5 of the error status (BFM #29) is turned on.
2. Cautions regarding EEPROM writing
If data is set in BFM #0, #5, #10 to #17, #32 to #35, #50 to #54 or #60 to #63, the data will be written in the
EEPROM of FX
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. Therefore, when creating a program, do not
frequently write data in the above buffer memories (BFM).
The maximum number of EEPROM rewritable times is 10,000. Therefore, when creating a program, do not
frequently write data in the above buffer memories (BFM).
BFM number
Description
#32
Data in channel 1
#33
Data in channel 2
#34
Data in channel 3
#35
Data in channel 4
Output mode [BFM #0]
Setting range
0
-32640 to +32640
1
-10200 to +10200
2, 3
0 to 32640
4
0 to 20400