Laser is Inverted? Its on 100% power on idle but goes off when it should be cutting?


I have a creality 10w falcon that has been working fine. I went to use it but noticed as soon as it is connected the laser was at 100% even when not doing anything.

When I press “Start” and actually want to cut, it actually turns the laser off and then when finished it homes and the laser comes back on?

I do not know of any Lightburn or GRBL parameter that would invert the laser operation.

The only thing I can guess is that you have $30 and $31 backwards. Not even sure if that would do it.

In the Console window, enter $$ to list the GRBL parameters.
Examine $30 and $31 to see if these match:

You made no changes between that time?

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