We have a 1988 OKK PCV-40 Vertical mill with Mitsubishi Meldas - M0/M0B control. We are looking into buying a USB to DNC transfer box but we need to make sure the control has the drip feed option.

Also if it is even wroth the effort to do this. I have heard these older machines have issues drip feeding with modern code and can stutter making a circle or surfacing.