If anyone have the same problem as me:
I got an error after i installed the Extension Kit for my Ortur Laser Master 3 OLF:207
Got a bigger piece to engrave about 400x600
Error 2 G Code motion target exceeds machine travel.
Despite i corrected the Engraving Size to 400x850 in Lightburn settings /device settings.
Solution: Manually type the command in the console: $131=850
Then it changes the y-axis to 850 in the controller.
No mention from Ortur about this or Change from Lightburn after Device Settings changed to 400x850.
I dont know if ortur is responsible for implementing it in the manual or mention it anywhere ( i think so).
Or Lightburn cound implement the console command automaticly , if the Working Area Size is changed.
Or just everybody knew that and i am to new to this…
I hope it helps !!