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Question #: 15594

Question: [Mach3 USB Interface Board] Buffering. In former days, I used a MS DOS application to do the milling jobs. I was told that Windows sometimes does other jobs ans so my milling job would be ruined. Does this USB board buffer some of the CNC data to circumvent such errors?

Current Solution

This was true for controllers that use the parallel port to communicate with the CNC as the CPU is sending signals to each of the parallel port pins (GPIO or General Purpose Input/Output). With newer types of controllers that use the USB connection, this is not a problem anymore since all of the signal processing happens on the controller rather than in the computer. The computer only needs to send high-level commands to the controller and the controller translates the simple commands to pulse trains that the drivers can accept.

Additional Information:
I don't believe that the board itself buffers. MAch3 however, does use an algorithm for look-ahead.

Additional Information:
Thank you for the information. I plan to use a second SSD with a minimal Windows 10 or 11 system.

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