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🔶 What is DNC ?

➡️ Direct numerical control (DNC) is defined “as a system that integrates multiple machines by direct connection through a central computer”.




➡️ The communication network at the shop floor can be arranged either through connecting the remotely located computer, with long cables to the individual machine control directly or connecting the mainframe computer with a small computer at individual operator’s station called as satellite computer.


➡️ DNC systems are preferably used in large organizations. The combination of DNC/CNC makes possible to eliminate the use of the programme as the input media for CNC machines.


➡️ DNC downloads computer programs directly into CNC computer memory. This decreases the amount of communication required between the central computer and each machine tool.

➡️ A DNC is particularly described as “A system connecting a group of numerically controlled machines to memory for part program or machine program storage with provision for on-demand delivery of data to machines” by Electronic Industries Association (EIA).


➡️ The central computer is designed to provide instructions on demand to each machine tools. The central computer also retrieves data from machines. Therefore, there is two-way information is exchanged between the central computer and each of the machine tool.










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