that generation of sodick machines had an specific issue with serial, wich had something to do with the bit transcription of the serial. I can't tell you precisely what that is, but it is not an easy thing to solve with an ordinary pc. Sodick used to provide a separate pc unit to program, with the same soft as the machine, and that worked fine, naturally.
As wire cut programs don't have so many blocks, they are easy to copy on disks, but you must use the 720k format, instead of the normal 1.44mb. First of all, do not format disks on the machine, but in the pc. If you can format them in 720 (it is an option that win98 normally has), there´s an even more simple solution. 720k format it is not more than a one-side format. Have you ever realized that floppy disks have TWO holes in the corners? One is to protect them from writing, and the other one is to block one side of the disk. Cover it with a tape, and the disk will automatically become into a 720k one. Try these two options, the file extension for sodick is .nc, from a normal text file. You should be able to make it work so.
PS: this has just one problem. Disks normally become useless after a couple of weeks, due to electric noise from the machine. I found just one solution to that... I bought many of them. Hope was helpful