NE80E version is V300R001B02ASP02.
NE80E FTP designates ftp-directory as Flash and FTP log fails.
Designate ftp-directory as cfcard and the command is local-user ftp ftp-directory cfcard:/. The problem is solved and FTP users log succeeds.
When configuring FTP, designate ftp-directory as Flash and FTP users log fails.
NE80E product saves the file in cfcard.