Ruida 6442G on win10 with Z axis limiters active -Is there a way to have my z axis read 0 rather than 3000 on doing a reset - It’s a minor issue but I’d like to know if I’m missing something obvious to others???
Do you have Z axis stepper and limit switches on that axes?
If not, no. The Ruida must be able to home those axes for it to go to zero.
If you stop the Ruida during the homing operation, all axes will read max values.
On my 6442G, it’s 10,000, 10000, 3000 (x, y, z).
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Thanks Jack - Yes I do have working limiter switches both top and bottom on the Z axis - at the moment if I reset or shut off the machine the head goes back to 0/0x&y then returns to the previous days or projects starting point while the Z axis does not move at all but reads 3000 which rises if I move the table down and reverses if moved up as one would expect. But even if I move the table to 0x and 0y and up to the top limit switch and it stops the table and I press Origin, I do a reset and both x&y show 0 but on the controller it shows 0 for about 2 seconds then flicks over to 3000 - I was just wondering if there was a setting somewhere that would make it “read” 0 from that reset instead of 3000??? Like I said it’s not a critical thing but I am wondering what I might be missing???
Does the controller have that axes enabled to home?
‘Edit → Machine Settings → Vendor Settings’
These are the current settings I have Jack - Don’t know what I should change to make the 3000 read 0???
Something is amiss somewhere.
Is this a new install or machine?
If I read this right… The only direction you can move Z is down and the 3000 in the display increases.?
This doesn’t sound right at all.
When the machine is ‘home’ all axes are at 0, so it’s indicative of it failing to home. Just checked on mine, when I stop it during the home or reset, all axes come up at max limits. This indicates it’s not homing on Z (duh), but I’m kind of at a loss of where you could change something.
It is normal for it to go to the origin when reset, but it acts like it does not have a z axes if I’m reading you right.
When you reset, does it attempt to move the Z axis at all?
Hi Jack - Thanks for your assistance- This is not a new machine or install - it’s an 80W 1300x900 machine that I’ve been using for six years now. My typing and explaining skills are not the best but I’ll try to explain what happens. if I’ve finished a job and switch the machine off and say the laser head is at x-300 y400 and Z is say 50mm down from the top limiter switch trigger point, that would be showing as 3050 on the controller (assuming I had manually lowered the table by that much to focus) - So when I restart the machine the head move back to x0y0 (top left) and then comes back to the x300y400 point but the Z axis does not change at all but shows as 3000. If I then raise the bed by say 25mm it will read in LB and on the controller 2975. If I then lower it by 50mm it will read 3025. If I do a reset it will move back to x0y0 and then return to the same x300y400 and the z axis doesn’t move at all but it now reads as 3000. As I said it’s not a huge issue except it would be nice to be able to have a preset starting z depth for the many different jig jobs that I do. One thing that may be causing this is that I have “Relative Z moves only” checked “on” in Device Settings so I may have to try turning that off. I’m a little afraid of trying that since I before I installed the z limit switches I had some damaging bed overruns!! Any clever ideas much appreciated, Thanks Bill
You might have to also click the ‘Focus’ button (or menu item) on the controller to trigger the Z axis homing.
Hi Oz - Thanks for your input - I tried ticking Focus Z in LB (can’t see a focus option on controller) and it duly took the table to the top and indicated that it was 0. Great and I can set start points with Z activated and that works well too. But still on reset or restart the Z reading reverts to 3000 until I do another Focus Z???
I’m really curious as to why this happens and to where the 3000 figure comes from - Don’t want to waste your time as yuor help has already sorted 95% of my issue but if you could throw any more enlightenment at me it would be gratefully received. If not -No Worries. Thanks again & Cheers
Bill
The 3000 is the max range of the Z axis. It seems like it doesn’t know where home is, so it gives you maximum range as a default. It does likewise when you halt a homing cycle, x & y are set to 10,000.
If that is your question. It is curious why it won’t home otherwise. I thought I saw an autofocus option somewhere in the Machine settings, but I’ve been deluded before… 
Good luck
Thanks Jack
I’m now too discombobulated to deal with this issue - ,maybe I can get back to you on the 2nd Tuesday of next week???
No perspiration.
Take care…
Sorry I missed this before - The Z axis defaults to 3000 when not homed, just like X & Y default to 10000 when not homed - it’s just what the controller does. You could possibly enable homing on the Z axis for the controller in the controller settings, but I’m not sure if that will do it on startup, or only when you trigger the Z focus.