IFS files transfer with iACS

I have been looking around the documentation of iACS related to automating
file transfers using a script (a .cmd file), to run every day automatically
at 7am and download files to a PC folder.

It looks like it only support dttx and dtfx files and in turn these refer
to the LIBRARY/FILE(MEMBER) format.

I thought iACS allowed to download IFS files, the GUI does it, but I need a
command-line, automated process.

Have I not looked for it very well, or this option simply is not possible?

Thanks in advance for your help.

JS