Our newish plotter which we sold last year used EPS or DXF files, but was happier with EPS. If I’m sending stuff off, I usually send copies of DXF, EPS, PDF and JPG, on a disc, that way they can sort out what they want themselves. It only takes a a few seconds to save each one.
If you are using a Mac with Vectorworks and some other CAD programmes, you may need to “Export to DXF”, which will create a new file somewhere, which can then be burned to disc and read by any platform.
Programmes such as Adobe Illustrator can also “save as” EPS and DXF files, though I’ve found that importing such files to Illustrator sometimes gives odd results.
Ian