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X and Y combustion zones are not centered

Categories:
Laser
7
3
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10-12

Newbie here, I have an open frame cnc with a laser attached, blackbox controller, no limit switches. I set user origin lower left of job, run macro G92 X0 Y0
$10=0
set origin and return origin the same. I’m running a circle inside of a square wanting it centered in the square. The job runs correctly with the exception is the job burns approximately 3/4" to right and 3/4" lower than it should be from center. I’ve looked for offsets, there is a -21mm offset for the laser pointer. Here are the settings:
$0=10

$1=255

$2=0

$3=2

$4=1

$5=0

$6=0

$10=0

$11=0.010

$12=0.002

$13=0

$20=0

$21=0

$22=0

$23=0

$24=25.000

$25=500.000

$26=250

$27=1.000

$30=255

$31=0

$32=1

$100=159.966

$101=160.444

$102=399.910

$110=3500.000

$111=3500.000

$112=500.000

$120=500.000

$121=500.000

$122=100.000

$130=711.000

$131=711.000

$132=175.000
$#

[G54:-99.059,28.446,-89.974]

[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]

[G92:208.276,-37.334,0.000]

[TLO:0.000]

[PRB:0.000,0.000,0.000:0]

I’m sure it’s a setting some where I’m missing…any suggestions?

thank you

C

    • Nugent

      10-14
      Does your machine use a separate laser pointer when framing?
If not, then disable the -21mm laser offset, because that is likely what is causing your “3/4” lower problem"
      See translation
      Reply
      • Nugent

        : As for the 3/4" to the right - I’m not really sure about that but I suspect this is a job origin issue since it sounds like you are using the ‘Start From’ = ‘User Origin’ positioning mode, which is not as ideal for a system without auto homing. I suggest you use ‘Current Position’ instead. Pay attention to where the green dot is - which is the job origin, this relates to the position where you set G92 X0 Y0.

      • 55455rml
        Reply
        @Nugent

        : The laser does have a separate pointer for setting the origin. The -21mm was what the laser mfg said to put in as the offset to use the pointer. I disabled that which did take care of the down difference, but the offset to the right still persisted, so I input -21mm on the X axis and ran the test and the problem vanished, I have begun using Current position to start the job.

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