I'm taking an "intro to machining" class at a local school - in the school shop is a Victor-made Bridgeport knee-mill clone with a DRO and power drives on the X- and Y-axes.
The DRO permits the user to enter a program of sorts directly on the
DRO screen, via keypad entries - the operator keys in a sequence of X/Y coordinates where holes can be drilled, or as endpoints for a linear milling operation. When the program is run, the table is driven in the X and Y directions to locate a point, then it's up to the operator to manually plunge a drill bit or end mill, after which the program is restarted, which moves to the next X/Y location, and the operation repeats until the 'program' is through.
So, some questions:
1) Is there a commonly-used term to describe this kind of DRO-driven part CNC, part manual operation?
2) What commercial DROs (or DIY DRO software packages) support this mode?
3) Is the programming done directly in G-code, or something else?