Y axis is moving backwards

LightBurn Hardware Compatibility GRBL
1

i just bought a acmer p1 laser got everything set up and working, however my y axis is moving the wrong way and when i got something to finally start the lettering was backwards, also when i use the physical move option y axis moves the opposite way im quite new to this and not sure where else to turn too

$0=10

$1=25

$2=0

$3=5

$4=0

$5=1

$6=0

$10=1

$11=0.010

$12=0.002

$13=0

$20=0

$21=1

$22=1

$23=5

$24=300.000

$25=5000.000

$26=250.000

$27=1.000

$28=1000.000

$30=1000.000

$31=0.000

$32=1

$38=1

$40=1

$100=80.000

$101=80.000

$102=80.000

$103=100.000

$104=100.000

$105=100.000

$110=10000.000

$111=10000.000

$112=10000.000

$113=1000.000

$114=1000.000

$115=1000.000

$120=600.000

$121=300.000

$122=500.000

$123=200.000

$124=200.000

$125=200.000

$130=10000.000

$131=6000.000

$132=50.000

$133=300.000

$134=300.000

$135=300.000

ok

2

You likely have Origin set incorrectly in Edit->Device Settings. If only Y is backwards then move origin from it’s current position to the opposite vertical position. So if it’s currently top-left, move to bottom-left and vice versa.

3

that did help with it moving on the correct access but im still have issues where y values are wanting to start from -y and causes a hard limit trigger

<Idle|MPos:0.000,0.000,0.000|FS:0,0|Pn:P|WCO:0.000,0.000,0.000>

ok

Starting stream

G00 G17 G40 G21 G54

G90

G0 X135Y248

G1 X279S0F300

G1 Y334

G1 X135

G1 Y248

G90

Stream completed in 0:00

SimpleLaser 1.1h [‘$’ for help]

Start OK

ALARM:1

Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended.

[MSG:Caution: Unlocked]

4

after second checking my origin was correct before being at the top left and thats the same as where my home location is i tried each position and none of them aligne without x or y going the wrong way

5

Can you provide the following:

  1. Full screenshot of LightBurn with Laser window in view
  2. Can you confirm that jogging controls all work in correct direction now
  3. To which corner does your machine home? I want to confirm that it’s actually homing top-left
  4. Run these commands in Console and return the full output:
$H
$I
$$
$#
?
6

1

image
image1920×540 82.3 KB

2 y axis now wont move down dose nothing from home position and up causes hard limit trigger x works perfectly fine
3 my home is top left and the machine returns home no problem

$H

$H

ok

$I

$I

[PRODUCER:MKS DLC32]

[VER:1.1h.2022092901:]

[OPT:VMPH,63,254]

Target buffer size found

[MSG:Using machine:MKS DLC32]

[MSG:Mode=AP:SSDI=ACMER_P151306:IP=192.168.4.1:MAC=54-43-B2-8F-6A-C9]

ok

$$

$$

$0=10

$1=25

$2=0

$3=5

$4=0

$5=1

$6=0

$10=1

$11=0.010

$12=0.002

$13=0

$20=0

$21=1

$22=1

$23=5

$24=300.000

$25=5000.000

$26=250.000

$27=1.000

$28=1000.000

$30=1000.000

$31=0.000

$32=1

$38=1

$40=1

$100=80.000

$101=80.000

$102=80.000

$103=100.000

$104=100.000

$105=100.000

$110=10000.000

$111=10000.000

$112=10000.000

$113=1000.000

$114=1000.000

$115=1000.000

$120=600.000

$121=300.000

$122=500.000

$123=200.000

$124=200.000

$125=200.000

$130=10000.000

$131=6000.000

$132=50.000

$133=300.000

$134=300.000

$135=300.000

ok

$#

$#

[G54:0.000,0.000,0.000]

[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]

[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

?

?

<Idle|MPos:0.000,0.000,0.000|FS:0,0|Pn:P|Ov:100,100,100>

ok

7

Can you run these commands and then describe what exactly happens?

$H
G91
G0 X10
G0 Y10
8

nothing on the machine happened until i did g0 y10 i got another hard limit trigger with what i think was an attempt to move up again

ok

$H

$H

ok

G91

G91

ok

G0 X10

G0 X10

ok

G0 Y10

G0 Y10

ok

SimpleLaser 1.1h [‘$’ for help]

Start OK

ALARM:1

Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended.

[MSG:Caution: Unlocked]

9

Interesting. Have you made any modification to this machine? And are you very confident that you have assembled it correctly? Either your machine was misconfigured from factory or something isn’t installed correctly.

Also, are you absolutely certain that nothing happened when with the G0 X10?

Does your machine automatically home when turned on or only when pushing the Home button?

10

im sorry x10 did move im defiantly not %100 sure i installed everything correctly but I’ve checked any all wires have one way they can be inserted it the board from my understanding was the same ie i cant flip the axis with the laser on it because it would prevent it from hitting the limiter switches
my next step is im gona rewatch my installation video i guess but what would be my options if it was a factory misconfiguration

edit: or what should i be looking for in the wiring that could be changed on the x axis
second edit only when i press the home button dose it move to home not when i turn on the the board

11

Okay. That’s comforting.

To confirm the connectors are all keyed?

It’s not entirely unheard of for machines to come incorrectly configured from the factory but it’s a little unusual.

Do this please:

  1. In Console enter these commands:
$3=7
$23=7

$3=7 will invert the Y direction. $23=7 then inverts Y homing direction so that it continues to home in the correct direction.
2. Home machine
3. Test jogging controls. Do they all work correctly?

12

yes that worked thank you so much i knew it was (or thought) the $3 value from other forums but none of the number shown were correct for my board

13

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