I have a Monport 40w lightburn and it appears I have a setting screwed up. Homing works as it should but if I select Frame I get a grbl error: G-code motion target exceeds machine travel. Machine position safely retained. Alarm may be unlocked. (Right-click the ‘Devices’ button to reset the connection)
On or near line 2:
If I click start I get a slightly different error ALARM:2
G-code motion target exceeds machine travel. Machine position safely retained. Alarm may be unlocked. (Right-click the ‘Devices’ button to reset the connection)
On or near line 4:
Using the "move buttons shows z to be normal but y seems to be reversed which appears to be causing the error.
Grbl settings are:
I’m sorry I somehow missed that question. The laser homes to x0 y0.
The G0 x5 y-5 moves it to x5 y5. And yes changes were made I downloaded a 40W-LB.zip from Monport and installed 40W-Lightburn-Device-Settings.lbdev. Supposed to set my up in Lightburn…
Laser homes to top left…
Been tinkering with the $ values trying to correct the problem. Not seen any $$ values…
Lightburn sees the homing position as x0 y0, top left. G0 X5 Y-5 moves the laser down and right and Lightburn sees it as X5 Y5
Okay. It would have been useful if you’d disclosed any changes that you had made.
Here’s what I think is happening:
Your Y motor is inverted. Either the connector is in backwards or somehow the machine was shipped with inverted pins on the connector.
You flipped Y homing direction to accommodate for this
You have not flipped Y direction to deal with the repercussions of that
You have a couple of options:
See if you can identify the hardware issue. This is probably the preferred route in case you ever get updates from Monport. If you don’t care about this you could move to the second option. [EDIT] - note that if you do fix the connector that you’d have to revert the homing direction back to the original value.
Change $3=6. Or go to Machine Settings->Y Direction pin invert ($3) and enable it.
That should leave you with a working system.
Can you please do one of the fixes, rehome, and then test jogging controls? They should work correctly.