Mitsubishi Electric 09R927, Руководство по структурному программированию

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5 Applied Functions
5.1 Type Conversion Functions
101
FXCPU Structured Programming Manual
(Application Functions)
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5.1.33 DWORD_TO_WORD(_E)
Outline
This function converts double word [unsigned]/bit string[32-bit] data into word [unsigned]/bit string [16-bit]
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 [unsigned]/bit string [16-bit] 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
DWORD_TO_WO
RD
DWORD_TO_WORD(_DWORD);
Example:
D10:=
DWORD_TO_WORD(Label);
DWORD_TO_WO
RD_E
DWORD_TO_WORD_E(EN,
_DWORD, Output label);
Example:
DWORD_TO_WORD_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 [unsigned]/bit string [16-bit] data after conversion
Word [unsigned]/
Bit String [16-bit]
DWORD_TO_WORD
_DWORD *1 Label D10
DWORD_TO_WORD_E
EN ENO
*1 D10
X000
Label _DWORD
s
d
s
d
0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0
0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0
12345678H 5678H
Double word [unsigned]/
bit string [32-bit] data
Word [unsigned]/
bit string [16-bit] data
12345678H
5678H
The information stored in high-order 16 bits is discarded.
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