Version of G10 to set offset to current position?
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Hi All,
I currently set the nozzle height by driving the nozzle down until it grabs a piece of paper and then set the G10 P0 Z[-1 * current z position].
Is there a way to use the current position to set the offset? Something where you drive the tool to a position and tell it what coordinate the machine should consider the current location as.
So currently an example would work flow would be:
- Home all
- Run three screw bed level correction
- Run bed mesh probe
- Drive nozzle down to grab the piece of paper at x=0, y=0.
[For this example it happened at z=-15.5] - Send "G10 P0 Z15.5
I can't set up a macro for this as it uses the current z position which is variable.
So perhaps the following could be considered?
- Home all
- Run three screw bed level correction
- Run bed mesh probe
- Drive nozzle down to grab the piece of paper at x=0, y=0.
[For this example it happened at z=-15.5] - Send "Gxx P0 X0 Y0 Z0
So it behaves like G92, but only applies to the specific tool. Come to think of it perhaps correct an offset if you add a Px section to the G92 command?
Thanks.
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You should be able to accomplish that by sending M558 P0 to select manual Z probing followed by G30 S-2.
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Ah ok, thanks. Will it upset the bed compensation or bed levelling though?
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G30 S-2 changes only the Z offset of the current tool. You will need to set the correct Z probe type in M558 again after running this procedure.
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Thanks for the information. I'll try this at home later this week.
