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5 Applied Functions
5.1 Type Conversion Functions
95
FXCPU Structured Programming Manual
(Application Functions)
1
Outline
2
Function List
3
Function
Construction
4
How to Read
Explanation of
Functions
5
Applied
Functions
6
Standard
Function Blocks
A
Correspondence
between Devices
and Addresses
5.1.30 DWORD_TO_INT(_E)
Outline
This function converts double word [unsigned]/bit string [32-bit] data into word [signed] data, and outputs the
data obtained by conversion.
1. Format
*1. Output variable
2. Set data
In explanation of functions, I/O variables inside ( ) are described.
Explanation of function and operation
This function converts double word [unsigned]/bit string [32-bit] data stored in a device specified in into
word [signed] data, and outputs the data obtained by conversion to a device specified in .
Cautions
1) Use the function having "_E" in its name to connect a bus.
2) When handling 32-bit data in structured programs, you cannot specify 16-bit devices directly, different
from simple projects. Use labels when handling 32-bit data.
You can specify 32-bit counters directly, however, because they are 32-bit devices.
Use global labels when specifying labels.
FX3U(C) FX3G FX2N(C) FX1N(C) FX1S
FX
U
/FX
2C
FX0N FX0(S)
Function name
Expression in each language
Structured ladder ST
DWORD_TO_INT
DWORD_TO_INT(_DWORD);
Example:
D10:=
DWORD_TO_INT(Label);
DWORD_TO_INT
_E
DWORD_TO_INT_E(EN,
_DWORD, Output label);
Example:
DWORD_TO_INT_E(X000,Label,
D10);
Variable Description Data type
Input
variable
EN Execution condition Bit
_DWORD ( )
Conversion source double word [unsigned]/bit string [32-bit] data
Double Word [unsigned]/
Bit string [32-bit]
Output
variable
ENO Execution status Bit
*1 ( )
Word [signed] data after conversion Word [signed]
DWORD_TO_INT
_DWORD *1
Label D10
DWORD_TO_INT_E
EN ENO
*1
D10
X000
Label
_DWORD
s
d
s
d
000000010111100001100 00101001110
0
1
1
0
0
0
0
1
0
1
0
0
1
1
1
0
BC614EH
24910
Double word [unsigned]/
bit string [32-bit] data
Word [signed] data
BC614EH
24910
The information stored in
high-order 16 bits is discarded.