Math - Advanced for IEC

Power of X

Also called: EXPT

Operator – This function raises IN to the EXPth power and places the result in Q.

Inputs

IN: Number which needs to be raised to EXP’th Power (TYPE : REAL These numbers use IEEE 754-1985 format to store numbers in following ranges. 32-bit single-precision floating point (REAL) – -3.40282E+38 to +3.40282E+38 64-bit double-precision floating point (LREAL) – -1.79769E+308 to +1.7976E+308 Floating Point refers to both REAL and LREAL data types.)

EXP: Number used for increasing the Input IN to this power (TYPE : REAL)

Outputs

Q : The result of IN raised to the power of EXP. (TYPE : REAL)

Q = IN^^EXP

ST Language

Q = EXPT (IN, EXP)

FBD Language

LD Language

IL Language

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Power of e

Also called: EXT

Operator – This function determines the value of e (the base of natural logarithms) raised to the INth power and places the result in Q.

Inputs

IN: Number used for finding the natural log. (TYPE : REAL These numbers use IEEE 754-1985 format to store numbers in following ranges. 32-bit single-precision floating point (REAL) – -3.40282E+38 to +3.40282E+38 64-bit double-precision floating point (LREAL) – -1.79769E+308 to +1.7976E+308 Floating Point refers to both REAL and LREAL data types.)

Outputs

Q : The result of e raised to the power of IN. (TYPE : REAL)

Q = EXT(IN)

ST Language

Q = EXT (IN) ;

FBD Language

LD Language

IL Language

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Base 10 Logarithm

LOG10

Function – Calculates the logarithm (base 10) of the input.

Inputs

IN: Input to determine LOG to base 10. ( TYPE : REAL These numbers use IEEE 754-1985 format to store numbers in following ranges. 32-bit single-precision floating point (REAL) – -3.40282E+38 to +3.40282E+38 64-bit double-precision floating point (LREAL) – -1.79769E+308 to +1.7976E+308 Floating Point refers to both REAL and LREAL data types.)

Outputs

Q : Outputs LOG to base 10 for the Input at IN. (TYPE: REAL)

ST Language

Q := LOG10 (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Natural Logarithm

Also called: LOG

Function - Calculates the logarithm (base e) of the input.

Inputs

IN : REAL These numbers use IEEE 754-1985 format to store numbers in following ranges. 32-bit single-precision floating point (REAL) – -3.40282E+38 to +3.40282E+38 64-bit double-precision floating point (LREAL) – -1.79769E+308 to +1.7976E+308 Floating Point refers to both REAL and LREAL data types. Real value

Outputs

Q : REAL Result: logarithm (base e) of IN

Remarks - In LD language, the operation is executed only if the input rung (EN) is TRUE. The output rung (ENO) keeps the same value as the input rung. In IL, the input must be loaded in the current result before calling the function.

ST Language

Q : = LOG (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Sine

Also called: SIN / SINL

Function - Calculate a sine.

Inputs

IN : REAL/LREAL These numbers use IEEE 754-1985 format to store numbers in following ranges. 32-bit single-precision floating point (REAL) – -3.40282E+38 to +3.40282E+38 64-bit double-precision floating point (LREAL) – -1.79769E+308 to +1.7976E+308 Floating Point refers to both REAL and LREAL data types. Real value

Outputs

Q : REAL/LREAL Result: sine of IN

ST Language

Q := SIN (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Cosine

Also called: COS

Function - Calculate a cosine.

Inputs

Outputs

Q : REAL/LREAL Result: cosine of IN

ST Language

Q := COS (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Tangent

Also called: TAN

Function - Calculate a tangent.

Inputs

Outputs

Q : REAL Result: tangent of IN

ST Language

Q := TAN (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Inverse Sine

Also called: ASIN

Function - Calculate an arc-sine.

Inputs

Outputs

Q : REAL/LREAL Result: arc-sine of IN

Remarks - In LD language, the operation is executed only if the EN is TRUE. The ENO keeps the same value as the EN. In IL, the input must be loaded in the current result before calling the function.

ST Language

Q := ASIN (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Inverse Cosine

Also called: ACOS

Function - Calculate an arc-cosine.

Inputs

IN : REAL Real value

Outputs

Q : REAL Result: arc-cosine of IN

ST Language

Q := ACOS (IN) ;

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)

(* ENO keeps the same value as EN *)

IL Language

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Inverse Tangent

Also called: ATAN

Function - Calculate an arc-tangent.

Inputs

Outputs

Q : REAL Result: arc-tangent of IN

Remarks - In LD language, the operation is executed only if the EN signal is TRUE. The ENO keeps the same value as the EN. In IL, the input must be loaded in the current result before calling the function.