![]() However, if you only occasionally run long programs-or if you have a machine that cannot run long programs from internal memory-you may have no alternative but to use direct numerical control. ![]() Program length is limited only by hard drive capacity. Many high speed machining controls run programs from a hard drive within the control. If you’re running long programs on a regular basis, you should choose a CNC that is designed for running long programs. With a direct numerical control system, the program will be run from a device (commonly a PC) connected to the machine’s communications port (the RS-232c port).įrankly speaking, direct numerical control should only be used as a last resort. ![]() This kind of system is called a DNC system, but must not be confused with a distributive numerical control system (also called a DNC system) that simply transfers programs to and from the CNC machine. When programs are too long to fit within a CNC control’s memory, one alternative is to use a direct numerical control system. ![]()
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