FILE_ReadΒΆ
| Parameter | Value |
|---|---|
| Library_File_Name | CAA_File.lib |
| Firmware | V2.1 |
| Type | Type_Function_Block_History |
| Group | File |
FILE_Read reads the file which was previously opened via FILE_Open. If less characters can be read than specified in szBuffer, the Function Block returns an active xDone and indicates the current number of characters in szSize. The size of the target memory structure for the bytes to be read and the number of bytes to be read will not be checked.
The stability of the pointer on the data structures and their contents must be guaranteed if online change is executed. If pointer to data structure is changed during online changes operation could lead to damage of application data.