Hi all just tried to cut a simple circle and while the simulator in the openbuilds control progrom runs fine when i press play on the machince to start cutting, the z axis retracts to max height and then the limit swtiches kick in any idea of whats going on? here is my code cheers lucas (Made in : Autodesk CAM Post Processor) (G-Code optimized for controller) (OpenBuilds CNC : GRBL/BlackBox) (Post-Processor : OpenbuildsFusion360PostGrbl.cps V1.0.30) (Units = mm) (Laser UseZ = true) (Drawing name : Untitled) (Program Name : 1001) (1 Operation (1 : 2D Profile2) ( Tool 1: Plasma Cutter Diam = 2mm) ( Machining time : 15 sec) G90 G94 G17 G21 (Plasma pierce height 2) (Plasma topHeight 2) (Operation 1 of 1 : 2D Profile2) G54 (Plasma cutting with GRBL.) (This relies on homing, see Search Results for Query: G53 fusion | OpenBuilds ) G53 G0 Z0 G0 X42.83 Y2.5 F750 G0 X42.83 Y2.5 Z15 Z2 M3 S1000 G4 P1.8 G1 Z0 F750 G1 X38.5 Y0 G2 X-38.5 Y0 I-38.5 J0 X38.5 Y0 I38.5 J0 G1 X42.83 Y-2.5 M5 G0 Z15 M5 G0 X0 Y0 M30
Hello Dr. Did you remember to home and set your work zero? have to do that every time. It still jogs in the correct directions I assume? Gary
i shouldve added that the machine will run home to 0 but when i hit start the z axis will start to climb and not stop
Is says it in the gcode (OpenBuilds CNC : GRBL/BlackBox) (Post-Processor : OpenbuildsFusion360PostGrbl.cps V1.0.30) I dont have a plasma cutter, so not sure about this, but did you go through the instructions? OpenBuilds-Fusion360-Postprocessor/README-plasma.md at master · OpenBuilds/OpenBuilds-Fusion360-Postprocessor
Code: (This relies on homing, see Search Results for Query: G53 fusion | OpenBuilds ) G53 G0 Z0 Z0 is always going to hit the limit switch, that is why there is an option in the postprocessor for setting a NEGATIVE offset to avoid hitting it. And the link is there to help you find information about it, but I think the top search hit it is a little out of date or not specific enough so I will update the link later. BTW the default value is -10mm so for it to be using 0 means you changed it (-: Meanwhile, read all about it here... Home, Fusion360 and G53 Z moves
