FileOpenW

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Function Block A function block groups an algorithm and a set of private data. It has inputs and outputs. - Create or reset New start of the microprocessor. a file and open it for writing.

Inputs

Input	Data Type	Range	Unit	Default	Description
Execute	BOOL	0, 1	N/A	No default	On the rising edge The transition of a digital signal from low to high. AKA: positive edge., request to open a file.
Path Set of continuous positions and orientation information in multi-dimensional space. Geometrical description of a space curve that the TCP of an axesgroup moves along.	STRING	N/A	N/A	No default	The path to the file.

Outputs

Output	Data Type	Description
Done	BOOL	If TRUE, the command completed successfully.
Error	BOOL	If TRUE, an error has occurred.
ErrorID	DINT	Indicates the error if Error output is TRUE. See the table in Search IndexFile and TCP/IP Function Block ErrorIDs.
ID	UDINT	The ID of the open file.

Remarks

The controller allows only 32 open files at any given time.

If a file already exists, it is overwritten.
Files must be closed using the FileClose function block.

Figure 1: FileOpenW

FBD Language Example

Not available.

FFLD Language Example

Not available.

IL Language Example

Not available.

ST Language Example

(* FileOpenW example *)
(* Replace FileOpenW with FileOpenA or FileOpenR as needed*)
CASE StepCounter OF
0:
   Inst_FileOpenW(TRUE, 'Results.txt');
   StepCounter := StepCounter + 1;
1:
   Inst_FileOpenW(TRUE, 'Results.txt');
   IF Inst_FileOpenW.Done THEN
      ResultsFileID := Inst_FileOpenW.ID;
      Inst_FileOpenW(FALSE, '');
      StepCounter := StepCounter + 1;
   END_IF;
END_CASE;