What is DNC?

The History of DNC:
During the pre-PC era of the 1960’s, machine tools operated using paper tape as a means of loading and running part programs. Many large companies owned the legendary “size of a city block” style mainframe computers and relied on them to communicate with their machine tools. Technological advances in all facets of manufacturing led the users of these computers to formulate ideas for running a wire directly from the mainframe to the machine tool. DNC, or Direct Numerical Control, was born of these initial attempts to create an uninterrupted avenue of communication between the computer and the machine tool. Throughout the late 1960’s and early 1970’s, fledgling DNC began to crop up in myriad homegrown varieties as manufacturers developed their own versions of the technology intended to take advantage of computer resources. Though the technology brimmed with potential, the absence of a DNC industry forced individual companies to wrestle with unreliable mainframes and under developed ideas.

The scarcity of well-defined DNC processes meant that each machine tool had to be individually addressed. Learning to speak the language of different machine tools was a time consuming process, and created the need for an industry leader with communication engineering already in place. By the time the PC exploded into existence, Greco Systems had several years’ experience communicating with machine tools of all makes and models. In the early 1980’s, Greco Systems was the first to eliminate the mainframe and tie PC to machine tool. Over time, PC’s grew more powerful and could communicate in an entire network of machine tools. As technology improved, DNC, adopted Distributed Numerical Control, as the industry moved towards using PC’s in distributed processing.

As the first to turn the PC into an active machine tool communication device, Greco Systems initiated, defined and continues to lead the DNC industry. In 1984 Greco Systems introduced VersaNet, the first DOS based numerical control system. The first installation of VersaNet at General Dynamics in San Diego, California cost less to install than what the company spent in one year on the maintenance of their previous DNC system. The obvious benefits of DNC led Greco Systems to develop the first Windows 3.1 based system in 1993, followed by WinDNC the Windows 95/NT compatible software package in 1996.

DNC Today from Greco Systems:
Greco Systems continues to carry and support its hardware and software devices for the machine tool industry. Obsolete paper tape and mainframe computers, once replaced by Greco Systems’ DNC software, CNC Minifiles and Touch Screen Computers, will experience a new revolution in the machine industry with the e-DNC Hub. Greco Systems turns the corner from complex DNC systems, requiring a range of specialized skills to install, to an intelligent DNC Hub/Asynchronous Router. The device, e-DNC Hub, is a self-contained unit that includes the hardware and software to administer, control and operate the DNC environment. E-DNC Hub is a significant change in philosophy, using true state-of-the-art technology, while maintaining simplicity in construction and outstanding
performance second to none.