Actually... That will work, but I only left the M420 in place to be backward compatible. Doing a G29 A will activate the UBL System. Doing a G29 A S1 will save the current mesh state and mesh in storage slot 1 and flag the system as 'Active'. If the state of the system is saved to EEPROM while it is active, it will be active each time you power up the printer (which is a change of behavior from the historical G28 / G29 mindset but it is a real nice convenience.)
Look at the front end of the G29 and the G26 files. All of the commands (options) are documented there.
Once you have some what reasonable numbers in your mesh, you really want to do a G26 and use that result to shift back to a G29 P4 R M That is how you get the Mesh perfect!!!
Look at the front end of the G29 and the G26 files. All of the commands (options) are documented there.
Once you have some what reasonable numbers in your mesh, you really want to do a G26 and use that result to shift back to a G29 P4 R M That is how you get the Mesh perfect!!!