In my new 4 axis cnc with Mach3 I’m setting my home limits. Prior to that I ticked the AutoLimitOveride in the Settings screen and my Home position facing the cnc is at the back end and to the right.

Since it’s a new machine I didn’t want to do all axis at the same time so I started with the Y&A. In the diagnostic screen I clicked Ref Y and both the Y&A started moving towards the back and when they hit the limits they stopped, I reset the E-Stop and then I was able to jog out.

Then I did the same with the X axis. When she hit the limit the axis stopped but I wasn’t able to jog out. At the same time the following lights were flashing
EjogY+  M1+Limit, M3+Limit
EjogZ+  M1 M2 M3
EjogA+ M1Home M3Home

I shutdown the cnc and manually backed out. What I did wrong?

Thanks

 you may need to go into config/general config and over to the top right of the screen there is a input signal debounce setting. enter say 400 and retry your homing sequence again. adjust the value until it works as it should. with the auto limit over ride checked you should only have to hit the reset and back off the limit switch.

Thanks, I know about the debounce setting and I will do the change today and post back

I increased the debounce to 400, then 800 and then 1400 (it was set to 0 originally) but again the  X axis does not back out after it hits the home switch. All limits/home switches working because before I start setting the home of each axis I pressed each switch and I get the E-Stop warning.

During further inspection I noticed the X axis was binding a bit when it was approaching the home switch and I had to remove the Z axis to fix the problem. Now it runs smooth like all the other ones

What debounce does and can I set it any higher?

Cant figure out this one guys, the X axis limit/home switch is working, when I jog into it I can jog back out of it but when I use the Ref X in the diagnostic screen I can no jog out and have to shut down. The debounce is now set at 2000.

Any ideas?

Can you post your homing and limits settings?

Here are the settings

Looks like for some reason I cant attach files
will try later

here are the sttings, thanks

Ok every looks good there can you post your homing and limits settings?

Apologies Charlie, I haven’t use Mach3 for the last 4-5 years and have forgotten a lot. Now I realize what I sent before was wrong, hopefully the attached is what you want

Thanks