6.3.2. Laser Marking Control Bar
• Red/Light (F1)—This item is used to mark the frame of the object without laser output
so that users are convenient to orient the workpiece. This function is available in those laser
machines which have guide light.
• Mark (F2)—Fires the laser beam and focus improvement.
• Continuous: mark the objects recently until user stop the mark.
• Mark Selected: only those selected objects would be marked.
• Part: the total counts that the mark command has been executed.
• Total: The total counts that the mark command should be executed. The value would
decrease 1 automatically after the mark command has been executed each time. It is
unavailable under the mode of Continuous Marking. When in marking process, if the amount
number is more than 1, the marking operation will not stop until the marking number is 0.
• Parameter: machine parameter.
Focusing
Prior to any marking it is therefore necessary to set the correct focal distance between the
marking head and the workpiece. An incorrect focal distance is the most common cause of
poor or even indistinguishable markings.
The focal distance (A) is measured between the lower edge of the galvo head (B) and the
upper surface of the workpiece (C). The correct focal distance depends on the F-theta lens
used (focal length).
It is essential to maintain the correct focal distance for every laser marking
process. Only when in focus will the laser beam achieve the power density
necessary for permanent and clearly legible marking.
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