If I understand the question, simply hit the home button after your have tested your laser. The machine will go through its homing sequence. Position the laser relative to your work piece, zero and then load your g-code.
Note that homing is not required. Homing gives the controller the actual position of your router/laser. The controller can verify your g-code does not move outside of the axis. Such large moves would not damage the 1F but it would cause missed steps and ruin your work. If you are 100% confident that your g-code is safe from the zero point, you don’t need to home.
Thank you Ben,
I just talked to a jtech technician and he explained how it isn’t necessary to home the machine. I understand that now.
For the sake of argument, your first paragraph says to home the machine after testing laser. Then position the laser relative to workpiece and hit zero. That I still can not do. Once 1f is “homed” I can’t turn the laser on low power to set zero relative to workpiece.
So I do not “home” machine. Then I turn laser on low power, set x,y,z zero relative to workpiece. And run