Mitsubishi Electric MELSEC-Q Structured Programming Manual page 104

FXCPU Structured Programming Manual
[Device & Common]
Cautions on reading
When a file register (D1000 or later) is specified as the source of the BMOV instruction and a file register
having the same number is not specified as the destination (that is, when the same-number register update
function is not activated), the contents of the file register area [A] in the program memory are not read.
1) When a file register is specified as the source and a data register is specified as the destination
Built-in memory
memory cassette
Program
memory
Program/
comment
D1000
File register
500 points
14 blocks
(7000 points)
maximum
2) When file registers of different numbers are specified in the source and destination
Built-in memory
or
memory cassette
Program
memory
Program/
comment
D1000
File register
500 points
14 blocks
[A]
(7000 points)
maximum
102
or
System RAM
D 0
D200
memory
Data register
D599
D1100 Data register
[A]
D1499
Data register
D7999
System RAM
D 0
Data
memory
Data register
Write
Data register
D1400
[B]
D1499
Data register
D7999
Batch transfer of data registers
OFF
Data
X000
• When X000 is set to ON, the contents of the data
register area [B] are read as shown in the left figure.
[B]
• A file register can be specified in the output variable
.
However, if a same number is specified in both the
input variable
same-number register update function is activated.
→ For the same-number register update function,
Write
OFF
X001
D1100
D1199
• When X001 is set to ON, the contents of the data
D1400
register area [B] are transferred to the data register
D1499
area [B] and file register area [A] as shown in the left
figure.
If the protect switch of the memory cassette is set to
ON and data cannot be written to the file register
area [A], data is written to only the data register area
[B].
2 Devices in Detail
2.8 Data Register and File Register [D]
M8024
BMOVP
EN ENO
s d
D1100 D200
n
K400
and the output variable
refer to the previous page.
M8024
BMOVP
EN ENO
s d
D1100 D1400
K100 n
, the