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

EXP

Function Name	EXP
Description	Converts a REAL or LREAL input into a natural exponential value that is the output. The exponential value 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}

Function Name

EXP

Description

Converts a REAL or LREAL input into a natural exponential value that is the output. The exponential value 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}

Example:

Function Block Diagram - EXP:

In this example, the input of 5 is provided by the CurrentValueFormatted property of a point. The EXP function converts the value into an exponential value of 148.413159102577 and this is used as the output.

ST Program - EXP:

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

Output := EXP (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).