have you ever encounered this problem below before
when reading from large files (I am using FILE_ACCESS library), and the size of buffer cannot accomodate all data in the file, and consequently for getting all data from the file, I set the file pointer position (FILE.SetPos) to where it stopped (clearly multiples of buffer size) and read again and so on until end of file is reached (FILE.xEOF).
The very weird behaviour which I observe is that when using the function block (FILE.SetPos), and when the file is all read BUT
there are still empty bytes in the buffer, then somehow the buffer is filled from the function (FILE.READ) from the end of the file all the way backward with the size of the empty bytes. plus that i never get ''FILE.xEOF'' TRUE
If file is composed of 100 bytes and i have buffer of size 80. I read the first 80 bytes and in the next cycle the position is set to 80 , and now, however, there are only 20 bytes left, it will read the residue 20 bytes and other last 60 other bytes in the file to fill the rest of the buffer.
I really appreciate any contributions for a solution.