Mitsubishi Electric MELSEC iQ-R Series - Converting DWORD to WORD

25 TYPE CONVERSION FUNCTIONS
25.14 Converting DWORD to WORD
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25.14 Converting DWORD to WORD
DWORD_TO_WORD(_E)
These functions convert a value from DWORD data type to WORD data type.
Setting data
■Description, type, data type
Processing details
■Operation processing
• These functions convert the value input to (s) from DWORD data type to WORD data type, and output the converted value
from (d).
• The upper 16-bit data of the input value (DWORD data type) are discarded. (Refer to (1) in the figure below.)
• Input a DWORD data type value to (s).
■Operation result
1. Function without EN/ENO
The operation processing is performed. The operation result is output from (d).
2. Function with EN/ENO
The execution conditions and operation results will be as follows.
*1 If the value FALSE is output from ENO, the output data from (d) will be undefined. Create a program so that the undefined value will not
be used in operations.
Ladder, FBD/LD Structured text
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=DWORD_TO_WORD(s);
[With EN/ENO]
d:=DWORD_TO_WORD_E(EN,ENO,s);
Argument Description Type Data type
EN Execution condition (TRUE: Executed, FALSE: Not executed) Input variable BOOL
s (IN) Input Input variable DWORD
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable WORD
Execution condition Operation result
EN ENO (d)
TRUE (executed) TRUE Operation result output value
FALSE (not executed) FALSE
*1
Undefined value
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
sd
EN ENO
ds
(s)
(d)
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
10
87654321
001001000110100
0
0
5678H
12345678H
5678H12345678H
WORD
(1)
DWORD