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Z limit switch triggered
« on: January 22, 2016, 11:38:52 AM »
Hello all,
I'm having some trouble with the z axis limit switch being triggered when i start a toolpath. I set my home limits. everything is fine. When i start a toolpath the spindle moves up untill it hits the limit switch, stops and then i have to press reset to continue the toolpath. I tried debounce up to 5000 with no luck. This has only been happening for about a month now.
Any help would be appreciated.

Al

Offline ger21

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Re: Z limit switch triggered
« Reply #1 on: January 22, 2016, 12:21:59 PM »
Your g-code is probably sending it into the switch. Probably with a G43.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Z limit switch triggered
« Reply #2 on: January 22, 2016, 12:40:57 PM »
Thanks
I notice 1 of first lines has a G43 H1 Z.25
How do I correct this?

Offline ger21

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Re: Z limit switch triggered
« Reply #3 on: January 22, 2016, 12:49:18 PM »
Are you using tool length offsets? If not, delete the line.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Z limit switch triggered
« Reply #4 on: January 22, 2016, 01:22:22 PM »
I tried deleting that line.
The toolpath doesn't even make it to that line. It trips the limit switch on the preperation move.
I went back over some previous items and they all have a line with G43.
At a loss still.

Al
« Last Edit: January 22, 2016, 01:31:19 PM by bigal11 »

Offline ger21

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Re: Z limit switch triggered
« Reply #5 on: January 22, 2016, 01:36:13 PM »
What preparation move? Something in your g-code?
Sounds like your g-code is just telling the Z to go too high. Probably a setting in your CAM software.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Z limit switch triggered
« Reply #6 on: January 22, 2016, 01:59:04 PM »
I'll have a look at that route and post any results. tks
Re: Z limit switch triggered
« Reply #7 on: January 23, 2016, 03:43:54 PM »
What is the lenght of the tool in your tool table?

Jeff