Mitsubishi Electric 09R927, Руководство по структурному программированию

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5 Applied Functions
5.1 Type Conversion Functions
93
FXCPU Structured Programming Manual
(Application Functions)
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5.1.29 WORD_TO_DINT(_E)
Outline
This function converts word [unsigned]/bit string [16-bit] data into double 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 word [unsigned]/bit string [16-bit] data storeds in a device specified in into double
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.
FX
3U(C)
FX
3G
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Function name
Expression in each language
Structured ladder ST
WORD_TO_DINT
WORD_TO_DINT(_WORD);
Example:
Label:=
WORD_TO_DINT(D0);
WORD_TO_DINT
_E
WORD_TO_DINT_E(EN,_WORD,
Output label);
Example:
WORD_TO_DINT_E(X000,D0,
Label);
Variable Description Data type
Input
variable
EN Execution condition Bit
_WORD ( )
Conversion source word [unsigned]/bit string [16-bit] data
Word [unsigned]/
Bit String [16-bit]
Output
variable
ENO Execution status Bit
*1 ( )
Double word [signed] data after conversion Double Word [signed]
WORD_TO_DINT
_WORD *1 D0 Label
WORD_TO_DINT_E
EN ENO
*1 Label
X000
D0 _WORD
s
d
s
d
22136
0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0
5678H 22136
Word [unsigned]/
bit string [16-bit] data
Double word [signed] data
Data conversion
5678H
Each of high-order 16 bits becomes
"0" after data conversion.