Please use repetier liek syntax, not what marlin expects. Here from dev version the description:
- M303 P<extruder/bed> S<printTemerature> X0 R<Repetitions> C<method>- Auto detect pid values. Use P<NUM_EXTRUDER> for heated bed. X0 saves result in EEPROM. R is number of cycles.
method 0 = classic, 1 = some overshoot, 2 = no overshoot
Comments
- M303 P<extruder/bed> S<printTemerature> X0 R<Repetitions> C<method>- Auto detect pid values. Use P<NUM_EXTRUDER> for heated bed. X0 saves result in EEPROM. R is number of cycles.
method 0 = classic, 1 = some overshoot, 2 = no overshoot
Older versions do not have C parameter.