Kuhnke Electronics Instruction Manual

4.5.12 Setting the Edit Bookmark of a File
Function Libraries
Use "MMC_FileSeek" to add an edit bookmark to an open
file which allows you to access the contents of the file at
any point by transferring the file handle of the open file.
Note that the edit bookmark cannot be moved to
somewhere after the end of the file.
This is an asynchronous Function Block. It transfers the
job to the file system and checks if it has been completed.
It needs to be run until the job has been handled
successfully.
Parameter Type Value Explanation
handle INT file handle
offset UDINT offset from the start of file
result INT
0 running
< 0 error
> 0 job done
FUNCTION_BLOCK MMC_FileSeek
VAR_INPUT
handle:INT;
offset:UDINT;
END_VAR
VAR_OUTPUT
result:INT;
END_VAR
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