I have a Lab Volt 5600 and the serial cable has one of the connectors pulled off I am not sure what type of cable it is or the wiring diagram for it. Both sides were db9 female connectors. The cable has 8 wires and on each end pin 6 is opened, all the other pins were soldered. It does seem to have had any loops. Anyone have any idea what type of cable it is or does anyone have the pin layout for it the mill is from the 2003-2004 period I believe it is running version 3 firmware.