What does parameter $30 do in LaserGRBL?
Parameter $30 determines the code for switching on the laser at maximum power (e.g., S1000). This number defines how other values like S-MAX are set when uploading an image to ensure consistent and correct laser intensity settings. Recommended value is 255 or your laser’s wattage in milliwatts. (Page 4)
From the official Lasergrbl Laser Grbl Software manual, page 3
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