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Author Topic: mach4 will no hold zero  (Read 330 times)

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mach4 will no hold zero
« on: March 17, 2021, 06:02:53 PM »
I run a program, put in another part to machine. Zero is off by as much as .125.
Re: mach4 will no hold zero
« Reply #1 on: March 17, 2021, 06:07:44 PM »
I run a program, put in another part to machine. Zero is off by as much as .125.

Before you work with other program/setup and was everything ok? Are you sure that is not mechanical problem? Is not long time i use Mach4 but problem like this haven't seen.
Re: mach4 will no hold zero
« Reply #2 on: March 17, 2021, 06:23:15 PM »
Hi Greekart, Thank you for your reply. When I operate it manually, it works fine. When I type in a G code or  enter a G code using a cad cam program is when zero messes up.
Re: mach4 will no hold zero
« Reply #3 on: March 17, 2021, 06:27:03 PM »
Hi Greekart, Thank you for your reply. When I operate it manually, it works fine. When I type in a G code or  enter a G code using a cad cam program is when zero messes up.


Hi randy, do you have an example of the gcode that mess it up to post?
Re: mach4 will no hold zero
« Reply #4 on: March 17, 2021, 10:12:22 PM »
cheack tool offset,bater add G40 on top
also cheack if you have G54-59 on top ,and if so if the parameters are corect

Offline Stuart

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Re: mach4 will no hold zero
« Reply #5 on: March 18, 2021, 03:45:25 AM »
has tool offset been canceled in the Gcode
Re: mach4 will no hold zero
« Reply #6 on: March 18, 2021, 09:08:21 AM »
Randy,
Let's do a test.
Home your machine, mark a spot on one end of your table.
Zero in this location.
Let's use your long axis.
Then command a rapid move from one end to the furthest point you can on your table without crashing.
G00 Y(Value here, assuming you're using your Y axis)
Then command G00 Y0 and go back.
Are you at the same location?
This will tell us if you're missing steps.