Crd (File Data Read Instruction) - Panasonic FP7 Series Command Reference Manual

18.4 CRD (File Data Read Instruction)

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Ladder diagram
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List of operands
Operand Description
Path name (folder name + file name: 1 to 256 characters) of the file from which data is read and the
S1
number of characters or the starting address of the stored device (data format: character data)
Starting address of the device that stores the parameters related to the data to be read (data
S2
format: unsigned 16-bit integer)
n Number of read data (data format: unsigned 16-bit integer)
Starting address of the device where the data to be read is stored (data format: unsigned 16-bit
D
integer)
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Devices that can be specified (indicated by ●)
Operan
d
W W
X Y
S1 ● ●
S2 ● ●
n ● ●
D ● ●
(Note 1) Only 16-bit devices can be modified. (Integer constants and character constants cannot be specified.)
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Outline of operation
● This instruction reads [n] pieces of data from the file in an SD memory card specified by [S1]
according to the parameter specified by [S2], and stores it in the device starting with [D].
● A comma and a line break code (LF or CR+LF) are recognized as delimiters between data
pieces.
● If you specify ASCII data and read an odd number of bytes, only the lowest byte of the last
word is stored.
● If you specify binary data and read an odd number of bytes, H00 is stored in the highest byte
of the last word.
WUME-FP7CPUPGR-12
16-Bit device:
W W W S D L
R L S D T D
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● ● ● ●
● ● ● ●
● ● ● ●
18.4 CRD (File Data Read Instruction)
32-Bit
device:
TS TE
U W
WI IX
C C
M O
S E
Real St
Integer numbe rin
r g
D
K H SF " "
Ｕ
F
●
● ●
Index
modifie
r
(Note 1)
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18-19