DirOpen (FB; Prefix fildop)¶

FUNCTION_BLOCK DirOpen EXTENDS CBM.ETrig

This function block opens a directory. The entries (files and sub-directories) of which should be read with the help of the function block ”FILE.DirList”. The return value is a handle. There may be restrictions concerning the specification of the directory name, e.g. only capital letters allowed, for different targets. The function ”FILE.GetProperty” shows these restrictions.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xExecute	BOOL	Rising edge: Action starts Falling edge: Resets outputs If a falling edge occurs before the function block has completed its action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError) are present at the outputs for exactly one cycle.	ETrig
Output	xDone	BOOL	TRUE: Action successfully completed	ETrig
	xBusy	BOOL	TRUE: Function block active	ETrig
	xError	BOOL	TRUE: Error occurred, function block aborts action FALSE: No error	ETrig
Input	sDirName	CAA.FILENAME	Directory name, absolute or relative path specification
Output	eError	ERROR	Local library error ID (0: no error; 5101: time out)
	hDir	CAA.HANDLE	Directory handle