PLBWEB_ERROR Keyword

     PLBWEB_ERROR={ '~' | HtmlFileName | PlcProgName }

This keyword defines the default behavior that occurs as the runtime terminates after a PL/B Web program encounters an un-trapped error that generated an error dialog.

The ‘SETMODE *PlbWebErrorUrl’ keyword also controls this behavior.

 If this keyword is not specified in the PLBWEBSRV.INI file or the keyword is assigned to be null, the default behavior causes the last PL/B Web Client URL to be executed again which is the same behavior as a browser reload\refresh action.

The assigned keyword string is defined as follows:

PLBWEB_ERROR=

In this case, the last PL/B Web Client URL that was used to invoke the logon operation is executed again with the same behavior as a browser reload\refresh action.

PLBWEB_ERROR=~

In this case, the PL/B Web runtime initiates the execution of the ‘plbweberror.html’ Web page when the runtime terminates after an un-trapped error has occurred.

PLBWEB_ERROR={HtmlFileName}

In this case, the PL/B Web runtime initiates the execution of an user defined Web page specified by the {HtmlFileName}. The {HtmlFileName} Web page file must be located in the directory specified by the PLBWEB_ROOT keyword.

     Examples:

     PLBWEB_ERROR=UserError.html

     PLBWEB_MENU=index.html

PLBWEBRROR={PlcProgName}

In this case, the PL/B Web runtime initiates the execution of the PL/B program specified by {PlcProgName}. This causes the browser client to logon to the PL/B Web Server to execute the specified PL/B program.

     Example:

     PLBWEB_ERROR=answer.plc

See Also: PLBWEBSRV Keywords, Server Command Line