Skip to main content
WARNING! From February 2022, these pages are no longer maintained.
Please see the current Duet3D documentation at https://docs.duet3d.com/
Help

Revision to M851

Steve Miller

+[title|M851]
+
+
+==== M851: Set Z-Probe Offset (Marlin Compatibility) ====
+
+''RepRapFirmware 2.02 and later''
+
+M851 Znn is implemented for backwards compatibility with other firmware. It sets the Z probe trigger in the same way as [[Gcode#Section_G31_Set_or_Report_Current_Probe_status|G31 Z-nn]] ''(note the sign reversal)''. It also flags the Z-probe G31 parameters as to be saved in config-override.g if the M500 command is used.
+
+[[Gcode#Section_G31_Set_or_Report_Current_Probe_status|G31]] should be used in preference to M851.