G28 ;home
M190 S90 ; wait for bed temp
;Auto Level
G1029 P11 ;set 11x11 leveling mesh
G1029 A ;start leveling
Then manual z offset via touchscreen
Then connect back with luban and
G1029S ;save calibration
G1029D0 ;finish calibration
M140 S0 ;turn off bed heater
This is complete procedure with g-code for 11x11 calibration. I didn’t see anything specific in g-code reference for SM2.0. so it should work with double.