18.13 CFREE (Acquiring SD Memory Card Free Space)
■
Ladder diagram
■
Available operation units (●: Available)
Operatio
n unit
bit US SS UL SL SF DF
i ●
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List of operands
Operand Description
D Starting address of the device storing the acquired free space in byte units
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Devices that can be specified (indicated by ●)
Operan
d
16-Bit device:
32-Bit
device:
Integer
Real
numbe
r
St
rin
g
Index
modifie
r
W
X
W
Y
W
R
W
L
W
S
S
D
D
T
L
D
U
M
WI
W
O
TS
C
S
TE
C
E
IX K Ｕ H SF
D
F
" "
D ● ● ● ● ● ● ●
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Outline of operation
● The SD memory card free space is stored in byte units in the area specified by [D].
e.g. When the SD memory card has 4 GB of free space
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Precautions for programming
● Also refer to section "19.9 Common Precautions for SD Memory Card Access Instructions".
● The SD memory card access instruction active flag (SR3A) turns ON after the execution
condition has turned ON until the completion of the execution of the instruction. During this
time other SD memory card access instructions cannot be executed.
18.13 CFREE (Acquiring SD Memory Card Free Space)
18-56 WUME-FP7CPUPGR-12
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