EXPT_REAL

When the first argument is "base" and the second argument is "exponent", the EXPT_REAL instruction calculates the Real result of the base exponent.
Languages supported: Function block diagram, ladder diagram, structured text.
This instruction applies to the Micro810, L20E, L50E, and L70E controllers.
EXPT_REAL
EXPT_REAL
EXPT_REAL parameters
Parameter
Parameter Type
Data Type
Description
EN
Input
BOOL
When set to true, the instruction is enabled.
  • TRUE: Execute the current computation.
  • FALSE: There is no computation.
Applies to ladder diagram programs.
IN
Input
REAL
Real number to be raised.
EXP
Input
REAL
Power (exponent).
EXPT_REAL
Output
REAL
(IN EXP)
1.0 if IN is not 0.0 and EXP is 0.0
0.0 if IN is 0.0 and EXP is negative
0.0 if both IN and EXP are 0.0
0.0 if IN is negative and EXP does not correspond to an integer.
ENO
Output
BOOL
Enables output. Applies to ladder diagram programs.

EXPT_REAL examples

EXPT_REAL function block diagram example
EXPT_REAL function block diagram example
EXPT_REAL ladder diagram example
EXPT_REAL ladder diagram example
EXPT_REAL structured text example
EXPT_REAL structured text example
(* ST Equivalence: *)
result := EXPT_REAL (xval, power);
Results
Results
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