Centroid Community CNC Support Forum

Is there a way to see an index pulse? On the PID Configuration screen, and on the F3/Encoder screen below it, you will see an asterisk next to the axis label in the left-most column whenever the index pulse is present for that axis. The index pulse, or lack thereof, will not cause servo instability...

That has nothing to do with the M8.

It was the result of the M3 (spindle start) command on the previous line, combined with your probe detect input.

The control thinks you have a touch probe plugged in, so it would be a bad idea to let the spindle start.

M5 generally just means "begin stopping the spindle", i.e. turn off the run-forward and run-reverse commands. A typical M5 does not sit around and wait for the spindle to finish decelerating to a stop. You can, of course, add that. The simplest way is to configure and wire a "zero spe...

A very cursory review of your PLC program suggests that a complete tool change (orient, followed by tool unclamp) is the only scenario that the author of that PLC program considered. The PLC program automatically cancels the orient request, and the orient command, shortly after unclamping the drawba...

More likely Parameter 411.

Keith,

What can you tell us about M333, and whether it could be applied to this type of machine?

Okay. This is probably an omission in my Hickory/CHNC program. I think there is a circular dependency between enabling the MPG with the axis-select knob, and enabling it with the VCP MPG key. This issue would be unique to Gary's program for this project, and not generally representative of Centroid ...

Check that the encoder is securely clamped to the end of the ballscrew (i.e. check and reseat the setscrews in the shaft collar).

Check belt tension between the X servo motor and the ballscrew.

Can you enable the MPG by pressing the yellow "MPG" button on the Virtual Control Panel? If you do so, does the handwheel then work to move the selected axis? I think that maybe the only thing missing is to automatically enable the MPG when you turn the axis selector knob from "OFF&qu...

Good catch. If I had had more time last week, I would have posted the attached schematic page. See X431-81, on lines 21-22. On the Quickdrill, I wired that signal through an immediate contact of the safety relay, so that opening the safety relay forces the drive to fast-stop the motor. See also line...