FileEOF

Description

This function block tests if the end of a file has been encountered.

Figure 7-195: The FileCopy Function Block

Related Functions

FileClose, FileOpenA, FileOpenR, FileOpenW, FileReadLine, FileReadBinData, FileSeek, FileWriteBinData, FileWriteLine

See also: File Management

Arguments

Input

Execute	Description	On the rising edgeA rising edge is the transition of a digital signal from low to high. It is also called positive edge test if the end of the file is reached in a file that is open for reading.
	Data Type	BOOL
	Range	0, 1
	Unit	N/A
	Default	—
ID	Description	ID of the open file.
	Data Type	UDINT
	Range	N/A
	Unit	N/A
	Default	—

Output

Done	Description	If TRUE, then the command completed successfully
	Data Type	BOOL
Error	Description	If TRUE, an error has occurred
	Data Type	BOOL
ErrorID	Description	Indicates the error if Error output is set to TRUE. See the table in Search IndexFile and TCP/IP Function Block ErrorID Output
	Data Type	DINT
EOF	Description	TRUE if the end of the file has been encountered.
	Data Type	BOOL

Example

Structured Text

(* FileEOF example *)
CASE StepCounter OF
0:
   Inst_FileEOF(TRUE, MyInputFileID);
   StepCounter := StepCounter + 1;
1:
   Inst_FileEOF(TRUE, MyInputFileID);
   IF Inst_FileEOF.Done THEN
      EofReached := Inst_FileEOF.EOF;
      Inst_FileEOF(FALSE, 0);
      StepCounter := StepCounter + 1;
   END_IF;
END_CASE;