I'm having some issues on my Multicam MG305. After a tool change in g-code it runs the z-axis straight into the table, no matter what maximum depth and surface limits that are set. Somehow I think it's in the code, not in the machine. The code is clear, except for the M12 and M22 line that according to the book set 3D device on and off. No further explanation. This is a machine I just bought used, and I'm still trying to understand,...

Does anyone know what this "3D device" really does?

Thanks
Stefan