Connecting to a CNC machine, pros and cons of USB vs PP vs Ethernet etc.

[JAZZCNC]

magicniner claimed that no remote communication system can do rigid tapping. CANbus is a remote communication system, and as hood demonstrates, CANbus can do rigid tapping.

I don't see what the problem is?

Problem is CANbus isn't doing the ridgid tapping the Controller is doing it. CANbus is just shifting data which it does best.!!

I think the Valid point Magicininer was making is that it's not the Communication protocol that does the work on any machine usually it's the main Controller it's self.! . Just Like it's the Encoder module working in conjunction with the Main controller on the Cslabs devise. CANbus just lets them talk to each other, albeit very fast.
Also in this case it's actually the main controller that is doing the coordinated movement between spindle and Axis by controling the Servos (Hood's spindle is Servo driven) which is connected to Control software via Ethernet.
The Encoder module is just reading the High resolution encoders which require high data rates which CANbus is very good at.! The controller deals with these internally and send the relavent signals needed for movement to what ever does the moving or turning.!!