How To Write Script For Mach3. This tool change macro automates setting the z height on manual cnc routers when performing tool changes. They typically communicate with the pc via an ethernet or usb connection (but are not limited to those two means of.

Many scripts available online rely on automated tool changers or don't properly add offsets to the tool table, but this macro solves both issues. The locking pin is engaged. The second box, is the data which we send to device.