| Function Name |
ATAN |
|---|---|
|
Description |
Converts a REAL or LREAL input into an arc tangent (inverse tangent). The arc sine value is the output and is also a REAL or LREAL. |
|
Arguments |
Input 1 {REAL or LREAL}. For more information on the data types for the inputs and outputs, see Data Type Hierarchy. |
|
Returns |
Output {REAL or LREAL}. This value is in radians. |
Example:
Function Block Diagram - ATAN:
In this example, the input of 5 is provided by the CurrentValueFormatted property of a point. The ATAN function converts the value into an arc tangent value of 1.37340076694502 and this is used as the output.
ST Program - ATAN:
The syntax for an ATAN function in an ST Program is:
- Output := ATAN (Input 1);
Where Output and Input 1 are defined as variables earlier in the ST program. The Input 1 variable represents a REAL or LREAL type of value (the output is the same type of value as Input 1).