492
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.17 FNC129 – INT / Floating Point to Integer Conversion
18.17 FNC129 – INT / Floating Point to Integer Conversion
Outline
This instruction converts binary floating point data into a binary integer which is a normal data format inside
PLCs (binary floating point
→
binary integer).
→
For program examples of floating point operations, refer to Section 12.10.
→
For handling of floating point, refer to Subsection 5.1.3.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (INT and INTP)
Binary floating point stored in [
+1,
] is converted into a binary integer, and transferred to
.
Instruction for inverse conversion
The inverse conversion is executed by FLT (FNC 49) instruction.
→
For FLT (FNC 49) instruction, refer to Section 12.10.
2. 32-bit operation (DINT and DINTP)
Binary floating point stored in [
+1,
] is converted into a binary integer, and transferred to
[
+1,
].
Instruction for inverse conversion
The inverse conversion is executed by DFLT (FNC 49) instruction.
→
For FLT (FNC 49) instruction, refer to Section 12.10.
Operand Type
Description
Data Type
Data register number storing binary floating point data to be converted into a
binary integer
Real number (binary)
Data register number storing a converted binary integer
16- or 32-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
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3 3
3
3
3 3
3
3
P
FNC 129
INT
D
16-bit Instruction
5 steps
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
INT
INTP
DINT
DINTP
Mnemonic
Operation Condition
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
S
D
S
D
S
S
D
Command
input
FNC129
INT
S
D
→
16-bit binary integer
The decimal part is cut.
+1,
Binary floating
point
S
D
S
S
S
D
D
Command
input
FNC129
DINT
S
D
→
+1,
32-bit binary integer
The decimal part is cut.
+1,
Binary floating
point
S
D
S
D