Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
E-23
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)
5.4.4
BFM #6: Output status
Initial value: H0000
Numeric data type: Hexadecimal (H)
The output status information of channel 1 to 4 is stored.
* The output conditions conform to the output setting upon PLC stop (BFM #5).
1. Cautions regarding use of output status
• The output status setting is valid only if the PLC is running.
When the PLC is stopped, H0000 is automatically written.
• When the setting in any of the following buffer memory areas is changed, output updating is stopped.
H0000 is automatically written in BFM #6.
•
BFM #0 (Output mode setting)
•
BFM #5 (Output setting upon PLC stop)
•
BFM #9 (Offset/gain setting value write command)
•
BFM #19 (Setting change prohibition)
•
BFM #20 (Initialization function)
•
BFM #32 to #35 (Data to be output from each channel upon PLC stop)
•
BFM #50 (Corrective function setting by load resistance)
•
BFM #51 to #54 (Load resistance for each channel)
•
BFM #60 (Status automatic transfer function Setting)
•
BFM #61 (Error status data automatic transfer-to data register specification)
•
BFM #62 (Upper/lower limit function status with automatic transfer to specified data register)
•
BFM #63 (Disconnection detection status with automatic transfer to data register specification)
•
BFM #99 (Data table transfer command)
Value status (HEX)
Description
0
Output updating is stopped.*
1
Under output updating
H
ch4
ch3
ch2
ch1