Erf$ Function

Returns the name of the function in which the error occurred.

Syntax
Erf$[(taskNumber)]

Parameters

taskNumber

Specify the task number as an integer from 0 to 32. Task number omission or “0” specifies the current task.

Return Values
The name of the function where the last error occurred.

Description
Erf$ is used with OnErr. Erf$ returns the function name in which the error occurred. Using Erf$ combined with Err, Ert, Erl and Era the user can determine much more about the error which occurred.

When the event “Error during Auto Mode” occurs, normal task and NoPause task in AUTO mode stop execution and end the task. If the target task has already ended when using this function for NoEmgAbort task or background task, “Error 2261” is occurred. Use OnErr to acquire information before the task ends.

See Also
Era, Erl, Err, ErrMsg$, Ert, OnErr, Trap

Erf$ Function Example
The Following items are returned in the program example below.

• In which task the error occurred (Ert function)
• In which function the error occurred (Erf$ function)
• Where the error occurred (Erl function)
• On which joint the error occurred (Era function)

Function main
  OnErr Goto eHandler
  Do
    Call PickPlace
  Loop
  Exit Function
eHandler:
  Print "The Error code is ", Err
  Print "The Error Message is ", ErrMsg$(Err)
  errTask = Ert
  If errTask > 0 Then
    Print "Task number in which error occurred is ", errTask
    Print "Function at which error occurred is ", Erf$(errTask)
    Print "The line where the error occurred is Line ", Erl(errTask)
    If Era(errTask) > 0 Then
      Print "Joint which caused the error is ", Era(errTask)
    EndIf
  EndIf
Fend