Problem with Z max Home

Romain34

Hi everybody !

I made a DIY CNC milling machine and i would like that Z axis homes to Z-Max, but he doesn't work.

Wen i ask a Z homing (G28 Z), Z goes down of 2/3mm and stops instead go up until the Z-max enstop.

I have 4 endstops on my machine, X-, Y-,Z-,Z+. X and Y min homing works perfectly.

I set Z_HOME_DIR 1

M119 is ok : X- L, Y- L, Z- L, Z+ L when they are not triggered.

On Repetier host, when i hit Home Z, Z goes down of 2/3mm and stops, and the console says me " X 0, Y 0, Z 80"

(80 is the Z-max length on my CNC)

Thank you for your help, i'm looking for a solution for 4 days, that make me crazy !

Romain

Repetier

What direction do you get if you move z up after connection? Home dir and endstops look good, but maybe z direction it self is set wrong, so you need to invert z axis in config. That it only goes 2-3mm might be a bad steps per mm setting, see eeprom values set.

Romain34

Hi Repetier ! Thank you for your reply, My Z direction is ok, when i click on the up arrow on Repetier Host, Z goes up, when i click on the down arrow, Z goes down !

The CNC job is ok, my only issue is the Z home direction :(

Romain34

// ## CNC configuration ##

/
If the firmware is in CNC mode, it can control a mill with M3/M4/M5. It works
similar to laser mode, but mill keeps enabled during G0 moves and it allows
setting rpm (only with event extension that supports this) and milling direction.
It also can add a delay to wait for spindle to run on full speed.
/

#define SUPPORT_CNC 1
#define CNC_WAIT_ON_ENABLE 300
#define CNC_WAIT_ON_DISABLE 0
#define CNC_ENABLE_PIN ORIG_FAN_PIN
#define CNC_ENABLE_WITH 1
#define CNC_DIRECTION_PIN -1
#define CNC_DIRECTION_CW 1
#define CNC_PWM_MAX 255
#define CNC_RPM_MAX 8000
#define CNC_SAFE_Z 100

#define DEFAULT_PRINTER_MODE 2

// ################ Endstop configuration #####################

#define MULTI_ZENDSTOP_HOMING 0
#define ENDSTOP_PULLUP_X_MIN true
#define ENDSTOP_X_MIN_INVERTING true
#define MIN_HARDWARE_ENDSTOP_X true
#define ENDSTOP_PULLUP_Y_MIN true
#define ENDSTOP_Y_MIN_INVERTING true
#define MIN_HARDWARE_ENDSTOP_Y true
#define ENDSTOP_PULLUP_Z_MIN true
#define ENDSTOP_Z_MIN_INVERTING true
#define MIN_HARDWARE_ENDSTOP_Z true
#define ENDSTOP_PULLUP_Z2_MINMAX true
#define ENDSTOP_Z2_MINMAX_INVERTING false
#define MINMAX_HARDWARE_ENDSTOP_Z2 false
#define ENDSTOP_PULLUP_X_MAX true
#define ENDSTOP_X_MAX_INVERTING false
#define MAX_HARDWARE_ENDSTOP_X false
#define ENDSTOP_PULLUP_Y_MAX true
#define ENDSTOP_Y_MAX_INVERTING false
#define MAX_HARDWARE_ENDSTOP_Y false
#define ENDSTOP_PULLUP_Z_MAX true
#define ENDSTOP_Z_MAX_INVERTING true
#define MAX_HARDWARE_ENDSTOP_Z true
#define ENDSTOP_PULLUP_X2_MIN true
#define ENDSTOP_PULLUP_Y2_MIN true
#define ENDSTOP_PULLUP_Z2_MINMAX true
#define ENDSTOP_PULLUP_X2_MAX true
#define ENDSTOP_PULLUP_Y2_MAX true
#define ENDSTOP_X2_MIN_INVERTING false
#define ENDSTOP_Y2_MIN_INVERTING false
#define ENDSTOP_X2_MAX_INVERTING false
#define ENDSTOP_Y2_MAX_INVERTING false
#define MIN_HARDWARE_ENDSTOP_X2 false
#define MIN_HARDWARE_ENDSTOP_Y2 false
#define MAX_HARDWARE_ENDSTOP_X2 false
#define MAX_HARDWARE_ENDSTOP_Y2 false
#define X2_MIN_PIN -1
#define X2_MAX_PIN -1
#define Y2_MIN_PIN -1
#define Y2_MAX_PIN -1
#define Z2_MINMAX_PIN -1

#define max_software_endstop_r true

#define min_software_endstop_x false
#define min_software_endstop_y false
#define min_software_endstop_z false
#define max_software_endstop_x true
#define max_software_endstop_y true
#define max_software_endstop_z false
#define DOOR_PIN -1
#define DOOR_PULLUP 1
#define DOOR_INVERTING 0
#define ENDSTOP_X_BACK_MOVE 5
#define ENDSTOP_Y_BACK_MOVE 5
#define ENDSTOP_Z_BACK_MOVE 2
#define ENDSTOP_X_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_Y_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_Z_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_X_BACK_ON_HOME 0
#define ENDSTOP_Y_BACK_ON_HOME 0
#define ENDSTOP_Z_BACK_ON_HOME 0
#define ALWAYS_CHECK_ENDSTOPS 0
#define MOVE_X_WHEN_HOMED 0
#define MOVE_Y_WHEN_HOMED 0
#define MOVE_Z_WHEN_HOMED 0

// ################# XYZ movements ###################

#define X_ENABLE_ON 0
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 0
#define DISABLE_X 0
#define DISABLE_Y 0
#define DISABLE_Z 0
#define DISABLE_E 0
#define INVERT_X_DIR 1
#define INVERT_X2_DIR 0
#define INVERT_Y_DIR 1
#define INVERT_Y2_DIR 0
#define INVERT_Z_DIR 0
#define INVERT_Z2_DIR 0
#define INVERT_Z3_DIR 0
#define INVERT_Z4_DIR 0
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR 1
#define X_MAX_LENGTH 1000
#define Y_MAX_LENGTH 1000
#define Z_MAX_LENGTH 80
#define X_MIN_POS 0
#define Y_MIN_POS 0
#define Z_MIN_POS 0
#define PARK_POSITION_X 0
#define PARK_POSITION_Y 10
#define PARK_POSITION_Z_RAISE 10

#define DISTORTION_CORRECTION 0
#define DISTORTION_CORRECTION_POINTS 5
#define DISTORTION_LIMIT_TO 2
#define DISTORTION_CORRECTION_R 100
#define DISTORTION_PERMANENT 1
#define DISTORTION_UPDATE_FREQUENCY 15
#define DISTORTION_START_DEGRADE 0.5
#define DISTORTION_END_HEIGHT 1
#define DISTORTION_EXTRAPOLATE_CORNERS 0
#define DISTORTION_XMIN 10
#define DISTORTION_YMIN 10
#define DISTORTION_XMAX 190
#define DISTORTION_YMAX 190

// ##########################################################################################
// ## Movement settings ##
// ##########################################################################################

#define FEATURE_BABYSTEPPING 1
#define BABYSTEP_MULTIPLICATOR 1

#define DELTA_SEGMENTS_PER_SECOND_PRINT 180 // Move accurate setting for print moves
#define DELTA_SEGMENTS_PER_SECOND_MOVE 70 // Less accurate setting for other moves
#define EXACT_DELTA_MOVES 1

// Delta settings
#define DELTA_HOME_ON_POWER 0

#define DELTASEGMENTS_PER_PRINTLINE 24
#define STEPPER_INACTIVE_TIME 1000L
#define MAX_INACTIVE_TIME 0L
#define MAX_FEEDRATE_X 180
#define MAX_FEEDRATE_Y 180
#define MAX_FEEDRATE_Z 5
#define HOMING_FEEDRATE_X 100
#define HOMING_FEEDRATE_Y 100
#define HOMING_FEEDRATE_Z 5
#define HOMING_ORDER HOME_ORDER_ZXY
#define ZHOME_PRE_RAISE 0
#define ZHOME_PRE_RAISE_DISTANCE 10
#define RAISE_Z_ON_TOOLCHANGE 0
#define ZHOME_MIN_TEMPERATURE 0
#define ZHOME_HEAT_ALL 1
#define ZHOME_HEAT_HEIGHT 20
#define ZHOME_X_POS 999999
#define ZHOME_Y_POS 999999
#define ENABLE_BACKLASH_COMPENSATION 0
#define X_BACKLASH 0.05
#define Y_BACKLASH 0.05
#define Z_BACKLASH 0.03
#define RAMP_ACCELERATION 1
#define STEPPER_HIGH_DELAY 0
#define DIRECTION_DELAY 0
#define STEP_DOUBLER_FREQUENCY 12000
#define ALLOW_QUADSTEPPING 1
#define DOUBLE_STEP_DELAY 0 // time in microseconds
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_X 100
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_Y 100
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_Z 20
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_X 150
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_Y 150
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_Z 30
#define INTERPOLATE_ACCELERATION_WITH_Z 0
#define ACCELERATION_FACTOR_TOP 100
#define MAX_JERK 4
#define MAX_ZJERK 0.4
#define PRINTLINE_CACHE_SIZE 16
#define MOVE_CACHE_LOW 10
#define LOW_TICKS_PER_MOVE 250000
#define EXTRUDER_SWITCH_XY_SPEED 100
#define DUAL_X_AXIS 0
#define DUAL_X_RESOLUTION 0
#define X2AXIS_STEPS_PER_MM 100
#define FEATURE_TWO_XSTEPPER 0
#define X2_STEP_PIN ORIG_E1_STEP_PIN
#define X2_DIR_PIN ORIG_E1_DIR_PIN
#define X2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_TWO_YSTEPPER 0
#define Y2_STEP_PIN ORIG_E1_STEP_PIN
#define Y2_DIR_PIN ORIG_E1_DIR_PIN
#define Y2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_TWO_ZSTEPPER 0
#define Z2_STEP_PIN ORIG_E1_STEP_PIN
#define Z2_DIR_PIN ORIG_E1_DIR_PIN
#define Z2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_THREE_ZSTEPPER 0
#define Z3_STEP_PIN ORIG_E2_STEP_PIN
#define Z3_DIR_PIN ORIG_E2_DIR_PIN
#define Z3_ENABLE_PIN ORIG_E2_ENABLE_PIN
#define FEATURE_FOUR_ZSTEPPER 0
#define Z4_STEP_PIN ORIG_E3_STEP_PIN
#define Z4_DIR_PIN ORIG_E3_DIR_PIN
#define Z4_ENABLE_PIN ORIG_E3_ENABLE_PIN
#define FEATURE_DITTO_PRINTING 0
#define USE_ADVANCE 0
#define ENABLE_QUADRATIC_ADVANCE 0

// ################# Misc. settings ##################

#define BAUDRATE 250000
#define ENABLE_POWER_ON_STARTUP 1
#define POWER_INVERTING 0
#define AUTOMATIC_POWERUP 0
#define KILL_METHOD 1
#define ACK_WITH_LINENUMBER 1
#define KEEP_ALIVE_INTERVAL 2000
#define WAITING_IDENTIFIER "wait"
#define ECHO_ON_EXECUTE 1
#define EEPROM_MODE 0
#undef PS_ON_PIN
#define PS_ON_PIN ORIG_PS_ON_PIN
#define JSON_OUTPUT 0

Romain34

Hi !

I fixed the issue !

The firmware was good, the issue was interferences in my cables that sent high signal !

I wired the switch normaly closed and inverted the logic of the switch in the firmware and now all works perfectly :)