connect a floppy drive

Hi.
Can somebody explaine me, how I can connect standart floppy drive
instead PC.I have plug 9-pins from electric cabinet,it can connect
to out device like PC,floppy and ets.But I don't known,which
cables I use for a floppy(one side 9-pins,another-plug of floppy).
Very Thanks.

We need more info. What kind of PLC?
I wouldn't expect that you can attach a floppy drive to a PLC.

The PLC is a SAIA.

I have no experience with that one.