Logic Guide - SQRT (Built-in Functions, Function Blocks, and Conversions)

SQRT

Function Name	SQRT
Description	Outputs the square root value of the input value. Both the input and output values are REAL or LREAL values.
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}

Function Name

SQRT

Description

Outputs the square root value of the input value. Both the input and output values are REAL or LREAL values.

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}

Example:

Function Block Diagram - SQRT:

In this example, the input of 5 is provided by the CurrentValueFormatted property of a point. The SQRT function outputs the square root of 5 which is 2.23606797749979.

ST Program - SQRT:

The syntax for an SQRT function in an ST Program is:

Output := SQRT (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).