The ProLight PLM 2000 benchtop bed mill used an Animatics servo controller. All the brains were in the box and it had capabilities to run headless (which ProLight never used). All the computer did was feed it G-Code and monitor for over-torque, end stop, and E stop signals. Moog-Animatics developed their "Smart Motor" product line to do the same thing. the brains are attached to the motors, which can be networked together to make every joint or axis responsible for its own motion while coordinating with the others. A dedicated LCNC controller/computer would be the same concept, but with an integrated control console for operator interface.
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