FileEOF
Function Block - Test if the end of the file is reached in a file that is open for reading.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
Execute |
BOOL |
0 to 1 |
N/A |
No default |
On the rising edge, test if the end of the file is reached. |
|
ID |
UDINT |
N/A |
N/A |
No default |
The ID of the open file. |
Outputs
|
Output |
Data Type |
Range |
Unit |
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 File and TCP/IP Function Block ErrorIDs. |
|
EOF |
BOOL |
|
|
TRUE if the end of the file has been encountered. |
Remarks
Figure 1: FileEOF
FBD Language Example
Not available.
FFLD Language Example
Not available.
IL Language Example
Not available.
ST Language Example
(* 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;
See Also
