Sometimes when I click zero for the X or Y axis, the machine goes into e-stop. Does not happen every time. I'd prefer it to not go into e-stop. Any suggestions?

I am running a SmoothStepper in case that makes any difference.

You need to provide a lot more information. What type of drives? Does the machine look/sound any different when the EStop happens? How are your home/limit switches connected?

Are you meaning the Zero button at the side of the Axis DROs? If yes then that is really weird and I dont see how that could be happening as all that does is zero the work offset and does not do anything electrical.
 
Hood

Are you meaning the Zero button at the side of the Axis DROs? If yes then that is really weird and I dont see how that could be happening as all that does is zero the work offset and does not do anything electrical.
 
Hood

Yes, those are the zero buttons I am using. It just hit me that I may be the culprit. I have a Mach Brain that monitors encoders on the y and the slaved y-axis and issues an e-stop if they differ by more than a pre-defined amount. Perhaps the Brain is firing. However, I am pretty certain this also happens with the X-axis which should have nothing to do with the Brain. I'll disable the brain and see if the problem goes away.

Thanks,
Kent