FileEOF
Description
This function block tests if the end of a file has been encountered.
Figure 7-204: 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;