forum.cncdrive.com

Hi,

My steppers and limit switches are set correctly, but when I click on home all (or even a single axis), it shows values and looks like it homed, but the steppers never moved.

What could be the issue?

Thank you

Are the switches configured as limit switches AND home switches, or just limit switches?

Where would i see that? I have your screenset

The UCCNC homes without movement only if the home input is not set for an axis (0).
So, are you sure you have your home switches setup? You've applied settings with the Apply settings button or the port/pin number is already saved?

You need to assign the switches as Home switches in the Axes Configuration screens

Ok, the home pins are set. Now, when I click home all, the Z homes, touches the limit switch (which is normal), but then triggers the limit alarm and the reset logic.

Do I have to only set the home pin and put nothing as limit pin?

The home pin controls the homing process, the axis touches the configured home switch, in other words when you home the axis the controller checks the pin you configured in the Home pin setting, touches the pin, axis chages direction, moves off the switch and when the switch releases and the axis stops the homing process ends.
The limit pin is the safety limit switch. If that pin triggers then the software goes to Reset.

The home and limit pins may be configured to the same pin number and if they are configured like that then the limit input is muted while the axis is homed, so the limit function (reset) is not triggered while homing.
The limit function is reenabled when the homing is done.

If your limit function (reset) triggers when the homing finishes then the polarity (active low setting) of the limit switch and/or the home switch might be wrong.

cncdrive wrote:If your limit function (reset) triggers when the homing finishes then the polarity (active low setting) of the limit switch and/or the home switch might be wrong.

Is noise or switch bounce a possibility?

It works now, thanks guys!