been a few weeks since i run my plasma i use the black box with fusion 360 post processor from dr.dflo for whatever reason it is writing an H1 command after the torch height is set and it is ready to move to its first coordinate and an H0 command after the last coordinate is met before it shuts the torch off causing an error 20 dont think ive had this problem before any clues?
He got a new plasma table a while back, suspect he updated his post to support his non-Grbl table for own use? Either way, not valid Grbl GCODE, use our Post instead