My LM2 Pro homes fine down to the bottom left corner. When I click GET COORDINATES it says -397 for each X and Y. I can’t seem to set it to ZERO. SO when I try to do anything it shoots off to the upper right and crashes. How the heck do I fix it to 0,0 for HOME. My origin is bottom left.
You likely have a work offset configured. Can you run a homing cycle and then enter these commands in the Console window? Copy the text in the output window here:
$I
$$
$#
?
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Although my laser seems to working correctly since I tried and failed to use the roller I have been having a similar issue with my machine position being in the negatives:
[G54:-397.000,-397.000,0.000]
[G55:0.000,0.000,0.000]
[G56:0.000,0.000,0.000]
[G57:0.000,0.000,0.000]
[G58:0.000,0.000,0.000]
[G59:0.000,0.000,0.000]
[G59.1:0.000,0.000,0.000]
[G59.2:0.000,0.000,0.000]
[G59.3:0.000,0.000,0.000]
[G28:0.000,0.000,0.000]
[G30:0.000,0.000,0.000]
[G59.6:0.000,0.000,0.000]
[G92:0.000,0.000,0.000]
[HOME:-397.000,-397.000,0.000:3]
[TLO:0.000]
[PRB:0.000,0.000,0.000:0]
ok
@tempknight Interesting how both of you have -397. Wonder why specifically -397. I suspect 400 - homing pull-off but not certain.
G54 is an offset. I’m not familiar with what’s going on with HOME but it may be echoing what you have in G54.
Let’s eliminate the G54 offset. Run this in Console:
G10 L2 P1 X0 Y0
$#
Return the output.
I had the exact same problem last week and Gil told me to type $RST=* in the console and that fixed it. I had switched to my rotary and that introduced the apparent offset. All good now, just had to restore a couple of GRBL settings. Make a copy before doing the $RST=*.
I did the G10 and it still had home at the -397 and then did the $RST=* and that seems to have cleared it up. Thanks for the help!
Thanks that seems to have cleared it up, yeah the offset got introduced when I tried to use the rotary as well.
Great. $RST=* is a full reset to all defaults. Just keep in mind if you have other settings that you want to preserve.
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I’m glad it worked for you, I think this is the first time I was able to help someone out with a problem. When I had this happen last week, I did a search and found someone else with the exact same problem, with the same offset. And berainlb is right, I should have mentioned that more then just the GRBL settings could be affected, my bad. In my case I hadn’t changed much so there wasn’t a whole lot to change back.
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Ya i was using the rotary as well. What the heck. Is there a way to just reset the G54? That would be better. Thanks for the help folks!! The reset cured it.
Yes. I explain it in my first reply. Review there.
That’s the first thing I tried but it had no effect on where Lightburn thought the laser head was. "Get Position " kept reporting X-397 Y-397 no matter what I did. I found a previous post with the same issue about the same time Gil responded to my post and he recommended $RST=* to both of us. I’m just glad it’s straightened out. Now if I can figure out why the rubber-band frame and the T1/T2 boxes aren’t playing nice. If I use a T1 or T2 box to frame something, RBF follows the box outline and not the shape of the image. If I change it from one to the other it starts to work. But when I reopen the file the next day I have to change it to the other one to get it working again. Weird. It started after I updated to 1.0.6, it worked fine before that.
I was only specifically addressing the question of G54 which will be zeroed out with what I had posted.
it’s not clear to me where the HOME offset is coming from, however. And not certain how that can be cleared without a full reset. If it could be reproduced I’d be interested to see if something like this would clear it out:
$HOME X0 Y0
You should try downgrading to your previous version to see if the problem goes away. I had heard that changes to the framing functionality were coming but I didn’t think anything was introduced in at least the last 2 revisions.
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