Converting Real To Lreal - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

25.42

Converting REAL to LREAL

REAL_TO_LREAL(_E)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These functions convert a value from REAL data type to LREAL data type.
Ladder, FBD/LD
[Without EN/ENO]
s d
Setting data
■Description, type, data type
Argument Description
EN Execution condition (TRUE: Executed, FALSE: Not executed)
s (IN) Input
ENO Output status (TRUE: Normal, FALSE: Abnormal)
d Output
Processing details
■Operation processing
• These functions convert the value input to (s) from REAL data type to LREAL data type, and output the converted value
from (d).
(s)
1234.0
REAL
• Input a REAL data type value to (s).
• The number of significant digits is about seven because a REAL data type value is processed in 32-bit single precision.
• If the integer value exceeds the range of -16777216 to 16777215, a rounding error occurs in the converted value.
■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.
Execution condition
EN
TRUE (executed)
FALSE (not executed)
*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.
RnSFCPU RnSFCPU
(Standard) (Safety)
[With EN/ENO]
EN ENO
s d
(d)
1234.0
LREAL
Operation result
ENO
TRUE
*1
FALSE
Structured text
[Without EN/ENO]
d:=REAL_TO_LREAL(s);
[With EN/ENO]
d:=REAL_TO_LREAL_E(EN,ENO,s);
Type
Input variable
Input variable
Output variable
Output variable
(d)
Operation result output value
Undefined value
25 TYPE CONVERSION FUNCTIONS
25.42 Converting REAL to LREAL
25
Data type
BOOL
REAL
BOOL
LREAL
1849