Exponentiation - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

27.6

Exponentiation

EXPT(_E)
RnPCPU
RnCPU RnENCPU
(Process)
These functions output the exponentiation of an input value.
Ladder, FBD/LD
[Without EN/ENO]
s1 d
s2
Setting data
■Description, type, data type
Argument
EN
s1 (IN1)
s2 (IN2)
ENO
d
Processing details
■Operation processing
• These functions exponentiate the REAL or LREAL data type value input to (s1) with the exponent (INT, DINT, REAL, or
LREAL data type) input to (s2), and output the operation result from (d).
(s2)
(s1)
4.0
INT
REAL
■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.
Operation error
Error code Description
(SD0)
The value input to (s1) or (s2) is -0, a subnormal number, NaN (not a number), or .
3402H
27 ARITHMETIC OPERATION FUNCTIONS
1916
27.6 Exponentiation
RnPCPU RnSFCPU RnSFCPU
(Redundant) (Standard) (Safety)
[With EN/ENO]
EN
s1
s2
Description
Execution condition (TRUE: Executed, FALSE: Not executed)
Base
Exponent (power)
Output status (TRUE: Normal, FALSE: Abnormal)
Output
(d)
2
16.0
REAL
Operation result
ENO
TRUE
FALSE
Structured text
[Without EN/ENO]
d:=EXPT(s1,s2);
[With EN/ENO]
d:=EXPT_E(EN,ENO,s1,s2);
ENO
d
*1
Type Data type
Input variable BOOL
Input variable ANY_REAL
Input variable ANY_NUM
Output variable BOOL
Output variable ANY_REAL
(d)
Operation result output value
Undefined value