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My guess is that when F500 is put on the end of this gcode line it overides Machs homing speed, otherwise why would Sheetcam give this option if it didn't work.īack to the % setting in Config / Homing Limits. I'm noticing in forum searches, not many users are putting a ref speed in their Sheetcam post processor as I have so if they have G28.1 Z15 then the torch would rapid down to 15mm then home (touch off) at a speed determined by the % setting in Machs Config / Homing Limits box. I'm getting some more info on this one because there are some things I'm not 100% certain on. Off on the Z home switch (these settings are entered in the post processor however mach takes over % of speed because of the G28.1)
#SHEETCAM PLASMA CODE#
A touch off operation with gcode produced by Sheetcam works differently to a basic axis homing opertion, as the code above shows.īeefy wrote:Correct me if I'm wrong but the plunge rate setting in Sheetcam does not control how fast the torch moves from the rapid height (or safe Z). It simply sets how fast an axis looks for the home switch. What % setting you have in Machs config/homing limits has no bearing on Sheetcams plunge rate. The axis should not fly into the home switches at warp speed. The homing % setting is to stop the homing being done at a high speed. I think the Mach homing operation is being confused with Sheetcams plunge rate setting which are completely separate and different things. G01 Z1.5000 F2000.0 THIS IS THE PLUNGE RATE HERE where Z goes from pierce height to cut height. G04 P1.2 Pierce delay time for torch to burn through. G92 Z0.0 Zero dro - touch off complete, torch at top of plate G00 Z0.8800 Rapid to 0.88 mm (switch offset - set in post processor) Off on the Z home switch (these settings are entered in the post processor) G28.1 Z15.00 F500.0 Touch off - Z rapids down to 15mm then moves at a feedrate of 500 m/min to touch G00 X156.4147 Y346.4676 Rapid to next pierce location while torch at safe Z G00 Z70.0000 Rapid to safe Z height of 70mm Look at the following gcode portion from my latest file generated by Sheetcam: In Sheetcam the plunge rate is how fast the torch moves from the pierce height to the cut height, which in the example below is from 4.5mm to 1.5mm. Correct me if I'm wrong but the plunge rate setting in Sheetcam does not control how fast the torch moves from the rapid height (or safe Z).