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744
FX3G/
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
34 FX3U-CF-ADP Applied Instructions – FNC300 to FNC305
34.4 FNC 303 – FLRD / Data read
34.4 FNC 303 – FLRD / Data read
Outline
The FLRD instruction reads data from the CompactFlash
TM
card.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (FLRD)
The FLRD instruction reads corresponding number of data from the position determined by the line position and
column position in the file specified by the file ID, and stores the read data to a device specified in .
Operand Type Description Data Type
File ID (Refer to Subsection 34.4.1) 16-bit binary
Data read parameter (Refer to Subsection 34.4.1) 16-bit binary
Device which stores the read data (Refer to Subsection 34.4.1) -
Number of data points existing in the specified line (Refer to Subsection 34.4.1) 16-bit binary
n Used channel number [contents of setting : K1 = ch1, K2 = ch2] 16-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
33 3 33
33 3
33 3 33 3
33 3
n 33
FNC 303
FLRD
Mnemonic Operation Condition
16-bit Instruction
11 steps
FLRD
Mnemonic Operation Condition
Continuous
Operation
32-bit Instruction
S
1
S
2
D
1
D
2
S
1
S
2
D
1
D
2
D
2
D
1
S
1
S
2
Command
input
FNC303
FLRD
n
Data read parameter
Used channel number
Number of data points existing in the specified
line
Device which stores the read data
File ID
D
1