Binary
There are two basic file types you can use when transferring files with FTP: ASCII and BINARY. ASCII files are plain text files. They can have extensions like .txt or have no extension at all. BINARY files are programs or other non-text files saved in the file format of the application that created them or archived or compressed file formats.
If you are transferring binary data to an existing iSeries™ file, the record length is the record length of the existing iSeries file. For example the existing file size should accommodate the new data. If the file does not exist on an iSeries server, FTP chooses a record length for you.
Certain files, such as save files, require binary image transfer. If TYPE is not binary when attempting to transfer such files, you receive a message that tells you to use binary.