atan / atanL

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 Function - Calculate an arc-tangent.

Inputs

Input

Data Type

Range

Unit

Default

Description

IN

REAL / LREAL

 

 

 

Real value.

Outputs

Output

Data Type

Range

Unit

Description

Q

REAL / LREAL

 

 

Result: Arc-tangent of IN.

Remarks

None

FBD Language Example

FFLD Language Example

  • In the FFLD 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.
    • ENO keeps the same value as EN.

IL Language Example

  • In the IL Language, the first input must be loaded before the function call.
Op1: LD  IN
     ATAN
     ST  Q    (* Q is: ATAN (IN) *)

ST Language Example

Q := ATAN (IN);

See Also