Protune for DM series works for the DM422C stepper drive. If it doesn't work, you might want to try ProTuner_All_Previous. You must select the application made for DM422C (not DM422). Also works in Linux under Wine (even better than on Windows XP). The USB to serial adaptor must supply true RS232 logic levels. Using Prolific chipsets seems to be tricky. FTDI chipsets worked like a charm.
Wine needs a symlink to the serial port:
ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com1 (Linux)
ln -s /dev/tty.usbserial-AD01UY2Z ~/Wine\ Files/dosdevices (OS X)
The 4 pin connector on the driver has the following output pins. Seen from left to right on the driver:
- pin1: 5V - do not connect
- pin2: TX - goes to the RXD: (pin 2 of 9 pole cable)
- pin3: GND - connect to pin5 of a 9 pole d-sub serial cable.
- pin4: RX - goes to the TXD: (pin 3 of 9 pole cable)