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Author Topic: Mach3 homing and limits  (Read 1921 times)

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Mach3 homing and limits
« on: February 14, 2016, 02:57:20 PM »
Hi
Just finished tuning my motors and setting up my homing and limits, works well. I ran the road runner sample no spindle or tool and my Z stays up through  the program and hits my limit switch half way thru, I assume because it has a raise Z g code. do I have something entered backwards for the Z command or do I need to zero the Z at a material height before starting.
Thanks Bill
Re: Mach3 homing and limits
« Reply #1 on: February 14, 2016, 05:47:44 PM »
............. do I need to zero the Z at a material height before starting.

Yes.
The surface of the material is typically Z0 in program coordinates.
Re: Mach3 homing and limits
« Reply #2 on: February 15, 2016, 02:08:36 PM »
Hi
Do I enter a Z0 in the g code before I run the roadrunner
Thanks Bill
Re: Mach3 homing and limits
« Reply #3 on: February 15, 2016, 03:17:28 PM »
No, you don't enter anything into the GCode.

Jog your Z axis down to the surface of the material, then enter 0 into the Z Axis DRO.
That will establish the proper relationship between the GCode and the actual material being machined.
Re: Mach3 homing and limits
« Reply #4 on: February 15, 2016, 03:39:06 PM »
Thanks will try
Bill