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Author Topic: Looking for help with setting Z axis downward travel limit  (Read 4515 times)

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Offline Chaoticone

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Re: Looking for help with setting Z axis downward travel limit
« Reply #10 on: March 16, 2013, 03:55:03 PM »
My bad, jog the machine to where you want to call home.  Z up all the way on a router and click the Ref. all home button on the run screen right beside your zero dro buttons.  The leds around the zero buttons will turn green once your machine is refrenced.

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!

Online Tweakie.CNC

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Re: Looking for help with setting Z axis downward travel limit
« Reply #11 on: March 17, 2013, 08:09:41 AM »
I may be way off target here, but if it was me I would also fit a short sleeve (clamp ring) over the ball-screw so it mechanically cannot move the axis far enough to loose the bearings etc. just in case the set limits are accidentally overridden.  ;)

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Chaoticone

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Re: Looking for help with setting Z axis downward travel limit
« Reply #12 on: March 17, 2013, 09:42:51 AM »
Spot on as usual Tweakie.  Thanks!

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!

Offline BR549

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Re: Looking for help with setting Z axis downward travel limit
« Reply #13 on: March 17, 2013, 09:54:19 AM »
There is an over travel software limit that you can set in Mach3 so that it will not travel past that point going down.

(;-) TP
Re: Looking for help with setting Z axis downward travel limit
« Reply #14 on: March 17, 2013, 10:39:34 AM »
Thanks for the input guys!

Brett, thanks for your patience with my lack of knowledge. I watched the tutorial on Homing last night and learned two things...first is that my table has not been set up properly, and secondly, to do so is simply beyond my current capabilities! I do plan to mess with it again today.

Tweakie, thanks for suggesting this option. Considering my statement above, it may be the way to go.

TP, this looks to me like my best simple option to achieve what I want to do. Would you, or someone explain the steps required?

Thanks to all. I have another question but I'll wait until I get my z axis issue sorted out.

Happy St. Paddy's Day!

Bob

Offline BR549

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Re: Looking for help with setting Z axis downward travel limit
« Reply #15 on: March 18, 2013, 12:16:37 AM »
Go to PORTS and PINS, Mill option .

Left side near top , Z inhibit, check the box and set the lower limit for Z.

Mach3 will now stop at the lower limit you defined. I believe there is also a button on the main mach3 screen lower center above error line.

NOTE: I JUST looked and on the main screen lower center just above the status line is the Zinh on/off button AND the DRO to set it

It works here OK, (;-) TP
« Last Edit: March 18, 2013, 12:21:23 AM by BR549 »
Re: Looking for help with setting Z axis downward travel limit
« Reply #16 on: March 18, 2013, 08:08:48 PM »
Thanks TP!