Mistakes in the positioning

LightBurn Software Questions
1

Hi, everyone. I have a general problem and I think that this is due to the software, maybe especially the conversion to the metric system…

To show the problem i have done the follow steps

  1. TAB “Laser” → go to “Home”
  2. TAB “Move” → Get Position
    Return value = x=0.00, y=0.00
    On the workspace, the position point is also at 0/0
  3. TAB “Move” → go to x=0.00 and y=200.00
    But the laser only movesabout position y 110mm.
    On the workspace, however, the position point is now exactly 0/200.
  4. TAB “Move” → get position
    Return value = x=5.00, y=11.89
    On the workspace, the position point also goes to the read position (x=5.00 y= 11.89)
    I use mm as the unit.
    There seems to be a problem here, or are there other settings that affect this?
    Kind regards
    Ralph
2

Is this a used laser? Seems like you’ve got an issue with steps/mm calibration not being set properly.

Take a look at this part of the documentation:
Steps / mm - LightBurn Software Documentation

I suggest you take a backup of your machine settings before making any changes.

3

Thanks for the answer, but that’s not a problem with the step size (steps per mm). If I draw a rectangle with an edge length of z. b. 100mm x 100mm draw and output is exactly right.

4

Possibly an offset configured?

Can you run a homing cycle and then enter these commands in a Console window and return the output?

$I
$$
$#
?
5

Hello

Here is the output

$I
[VER:V1.1.20210914:]
[OPT:VZ,15,128]
Target buffer size found
ok

$$
$$
$0=10
$1=25
$2=0
$3=1
$4=0
$5=1
$6=0
$10=1
$11=0.010
$12=0.002
$13=0
$20=0
$21=1
$22=1
$23=3
$24=25.000
$25=1500.000
$26=250
$27=1.120
$30=1000
$31=0
$32=1
$33=0
$100=80.000
$101=80.000
$102=480.000
$110=5000.000
$111=5000.000
$112=1000.000
$120=1000.000
$121=1000.000
$122=100.000
$130=400.000
$131=400.000
$132=40.000
$140=8
ok

$#
$#
[G54:5.000,-88.113,0.000]
[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]
[G28:0.000,0.000,0.000]
[G30:0.000,0.000,0.000]
[G92:0.000,0.000,0.000]
[TLO:0.000]
[PRB:0.000,0.000,0.000:0]
ok

?
?
<Alarm|MPos:0.000,0.000,0.000|FS:0,0|Pn:P|WCO:5.000,-88.113,0.000>
ok

6

This is your problem. Run this command in Console:

G10 L2 P1 X0 Y0

Retest and report back.

7

Great. Thank you for your great support. Now the positioning works as expected. However, I don’t know where the wrong zero point ([G54:5,000,-88,113,0,000]) came from.

8

Had you used LaserGRBL and pushed the globe button at some point?

9

I’ve tried several programs, including LaserGRBL. It’s entirely possible that I did it there.

10

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