StartMain Statement

Executes the main function from a background task.

This command is for the experienced user and you need to understand the command specification before use.

Syntax
StartMain mainFuncname

Parameters

mainFuncname: Specifies the name of the main function to be executed (main to main63).

Description
To execute StartMain, you need to set the [Enable advanced task commands] preference in the [Setup]-[System Configuration]-[Controller]-[Preferences] page.

If a task is executed using the Xqt statement from a background task, the executed task becomes a background task. With StartMain, you can execute the main function as a non-background task from a background task.

If you have already executed the main function or execute StartMain from a non-background task, an error occurs.

CAUTION

When executing StartMain command from a program, you must understand the command specification and confirm that the system has the proper conditions for this command. Improper use such as continuous execution of a command within a loop may deteriorate the system safety.

See Also
Xqt

StartMain Statement Example

Function bgmain

    :
  If Sw(StartMainSwitch) = On And Sw(ErrSwitch) = Off Then
    StartMain main
  EndIf
    :

Fend

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