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Author Topic: "RUN FROM HERE" Z- Axis goes to Limit switch???????  (Read 479 times)

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"RUN FROM HERE" Z- Axis goes to Limit switch???????
« on: September 04, 2018, 07:41:54 PM »
Hello everyone,
So I have been running Mach 3 for about 8 years now and love it. I do have an issue with the "RUN FROM HERE" command. If for some reason I need to stop a cutting program or maybe catch a false limit trip I normally use the RFH command. When I hit the "CYCLE START" the "Z" will go up to MAX travel and hit the limit switch. After posting this question on CNCzone.com everyone feels this is caused by Mach 3 and not my CAM G-code generator which is RhinoCAM. They have pointed me towards Config/Safe Z. So my question is can someone explain in detail what the settings should be in Config/Safe Z to prevent this issue from happening or am I looking in the wrong place? :'(

Thanks in advance

Steve

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Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????
« Reply #1 on: September 05, 2018, 08:44:07 AM »
Set your SafeZ just below Z limit switch.
Make no mistake between my personality and my attitude.
My personality is who I am.
My attitude depends on who you are.
Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????
« Reply #2 on: September 05, 2018, 12:45:56 PM »
Thanks for the quick reply. I assume I set using Machine Coordinates?

Steve in Maine

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Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????
« Reply #3 on: September 05, 2018, 01:00:43 PM »
Safe Z iz im Machine Coordinates.
When you home your machine, Z zero is just a fraction below Z limit switch (by the ammount of backing off)
Make no mistake between my personality and my attitude.
My personality is who I am.
My attitude depends on who you are.
Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????
« Reply #4 on: September 05, 2018, 01:36:39 PM »
Thanks for the reply1
Just reconfigured my machine using SAFE Z and it works.
Thanks again for the help.
Steve in Maine

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Re: "RUN FROM HERE" Z- Axis goes to Limit switch???????
« Reply #5 on: September 05, 2018, 03:35:45 PM »
You're welcome :)
Make no mistake between my personality and my attitude.
My personality is who I am.
My attitude depends on who you are.