Multi-Z Reference Configuration

Dual Z Single Endstop

• No need to add endstop_pin: in the second Z configuration:

  [stepper_z]
  step_pin: PA5
  dir_pin: PA4
  enable_pin: !PA6
  rotation_distance: 4
  full_steps_per_rotation: 200
  microsteps: 16
  endstop_pin: ^!PA9
  position_endstop: 0
  position_max: 300
  homing_speed: 50
  homing_retract_dist: 5
  
  [stepper_z1]
  step_pin: PB10
  dir_pin:  PB2
  enable_pin: !PB11
  rotation_distance: 4
  full_steps_per_rotation: 200
  microsteps: 16
  step_pulse_duration: 0.000004

Dual Z Dual Endstop

• Need to add endstop_pin: in the second Z configuration:

  [stepper_z]
  step_pin: PA5
  dir_pin: PA4
  enable_pin: !PA6
  rotation_distance: 4
  full_steps_per_rotation: 200
  microsteps: 16
  endstop_pin: ^!PA9
  position_endstop: 0
  position_max: 300
  homing_speed: 50
  homing_retract_dist: 5
  step_pulse_duration: 0.000004
  
  [stepper_z1]
  step_pin: PB10
  dir_pin:  PB2
  enable_pin: !PB11
  rotation_distance: 4
  full_steps_per_rotation: 200
  microsteps: 16
  step_pulse_duration: 0.000004
  endstop_pin: ^!PA10

Dual Z Using Probe or BL Touch

• Change the pin after endstop_pin: in the first Z configuration to probe:z_virtual_endstop

• Probe or BL Touch needs to be configured:

  [stepper_z]
  step_pin: PA5
  dir_pin: PA4
  enable_pin: !PA6
  rotation_distance: 4
  full_steps_per_rotation: 200
  microsteps: 16
  endstop_pin: probe:z_virtual_endstop  
  # position_endstop: 0
  position_max: 300
  homing_speed: 50
  homing_retract_dist: 5
  step_pulse_duration: 0.000004
  
  [probe]
  pin: ^PB4                    # Signal interface
  x_offset: 0                  # X-axis - sensor offset relative to nozzle
  y_offset: 0                  # Y-axis - sensor offset relative to nozzle
  #z_offset: 0                 # Z-axis - sensor offset relative to nozzle
  speed: 3.0                   # Leveling speed
  lift_speed: 5                # Probe lifting speed
  samples: 3                   # Number of samples
  samples_result: median       # Value method (default: median)
  sample_retract_dist: 3.0     # Retraction distance for leveling
  samples_tolerance: 0.075     # Sampling tolerance (Note: a very small value may increase the number of samples)
  samples_tolerance_retries: 3 # Number of retries when exceeding tolerance