It seems that any time I shut down power to the LR4 and start it back up, that position is marked as Y:0. If I jog it back to the actual 0.0 Home position, the Y will be -2300 or some crazy number. With a digital scale or set of calipers, there is a reset button that resets the current position to be 0.0 without having to power down and back up. So now my question: does that “reset position” exist in the control software?
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You’ll need to clarify what software and controller you’re talking about before anyone could answer.
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…yup…typical noob mistake.
Controller: Jackpot 3
Software: internal web app accessed via the AP
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Homing and zeroing are 2 different things.
Home X and Y
Zero X and Y
Jog to x100 y100
zero x and Y
Now if you power down and move the gantry by hand and power back on again how does the controller know where it is? It can’t. Till you home x and y again.
Home x and Y and it will know that it’s now -100X and -100Y from the zero you previously set.
There is still a machine XY zero which is your homing point (plus pulloffs) but you can use the process above to set a custom x0y0 and always return to it. (actually you can set 6 of them)
You can see on the UI the machine - M and workspace - W coordinates.
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Thank you for the explanation. I think I have not yet properly establish the machine XY and the correct pulloffs so it has no clue where it is anytime it turns on and therefore thinks that home is where ever it woke up.
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Are you able to home the machine using the endstops? Even if you haven’t adjusted pulloff’s to level the beam or square the machine, the homing should still work. If that isn’t working then we need to diagnose why.
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Exactly what @Jonathjon said.
The way FluidNC works is that before you home the machine, it does not know where it is, and it considers itself as “not homed.”
Also, your “work origin” (your X and Y “offset”) is relative to your “machine origin” which is only known after homing.
Just don’t move the machine too rapidly by hand when off; that can blow the controller.
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I am planning to be at the shop tomorrow and I am confident I will have many questions arising from my first attempts at configuration, setup and making chips fly.
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