1794
25  TYPE CONVERSION FUNCTIONS
25.2  Converting BOOL to DWORD
25.2 Converting BOOL to DWORD
BOOL_TO_DWORD(_E)
These functions convert a value from BOOL data type to DWORD data type.
■Description, type, data type
■Operation processing
 • These functions convert the value input to (s) from BOOL data type to DWORD data type, and output the converted value 
from (d).
 • When the input value is FALSE, 0H (DWORD data type) is output.
 • When the input value is TRUE, 1H (DWORD data type) is output.
 • Input a BOOL 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.
There is no operation error.
Ladder, FBD/LD Structured text
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
d:=BOOL_TO_DWORD(s);
[With EN/ENO]
d:=BOOL_TO_DWORD_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 BOOL
ENO Output status (TRUE: Normal, FALSE: Abnormal) Output variable BOOL
d Output Output variable DWORD
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)
EN ENO
ds
(s)
(d)
0H
1H
FALSE
TRUE
DWORDBOOL