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Edge HMI

Num

  • Last UpdatedOct 29, 2026
  • 1 minute read

Converts a string into a float.

Function

Group

Execution

String Exp.

Windows

Windows Embedded

IoT View

Thin Clients

Mobile Access

Num

String

Synchronous

Yes

Supported

Supported

Supported (see Notes below)

Supported

Supported

Syntax

Num(strValue)

strValue

The number of characters to be converted into float format.

Note: The float string cannot use characters other than the numbers (0..9) and a decimal point (.), or the function returns the value 0.0.

Returned value

Returns the number (formerly in a string format) in float format.

Notes

When this function is used in a project running on IoT View, it supports only single-byte Unicode characters (up to U+007F). Multi-byte Unicode characters are not supported at this time.

Examples

Tag Name

Expression

Tag

Num("321654.987") // Returned value = 321654.987

Tag

Num("5.6589626246") // Returned value = 5.6589626246

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