The CNC control is the computer that reads the part program and commands the machine's axes, spindle and functions — the brain that turns G-code into motion. It sets how you program the machine, what features it supports (high-speed look-ahead, 5-axis, probing) and how easy it is to staff and service.
The major platforms are Fanuc, Siemens Sinumerik, Mazak's Mazatrol and Okuma's OSP. The control generation strongly affects a used machine's capability and resale value.
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