New file is created with AM_APPEND_PLUS mode

What happens?
Although opening a file with AM_APPEND_PLUS mode, new data is not attached to the open file, but a new file is created.

When does the problem occur?
With the SysFileOpen function from the SysFile library, there is always a new file created when the AM_APPEND_PLUS mode is selected at the function input.

Which products are concerned?
PLC Designer V3.0 and higher

SysFile.lib library

Possible diagnostics:
None

Short-term measures/recommendations:
Use the CAA_File.lib library instead of the SysFile.lib library.

Assessment:
Although selecting the AM_APPEND_PLUS mode (attach data to file), an existing file is overwritten when using the SysFile.lib library. When using the CAA_File.lib library, data can be attached to a file.

URL for linking this AKB article: /en-de/go/akb/201300242/1/
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