Looks like a firmware bug to me. Using M400 before the M92 command will probably avoid the problem, if the M92 command is inside the file being printed. However, you wouldn't normally call M92 outside config.g. To change the extrusion factor during a print, use M221.
Edited 1 time(s). Last edit at 09/27/2016 10:18AM by dc42.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
