Homing X axis fail (y and z are fine)

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  • December 14, 2018 at 1:23 pm #11231
    fixxxer
    Member

    Homing used to work fine and now for some reason the x axis isn’t working properly. It will run into the limit switch and stop without performing a backoff or latch-it just stops dead. It will then report that posx =-500 something (x travel max on this machine is 575mm). I fought this for quite some time with not one success. Then I switched the motor groups 1 and 2 so that 1 now refers to y instead of x and visa versa. This caused both axes to fail homing procedures.

    This morning I flashed with 440.20 and performed $defa=1. Same problem. I’ve since switched motor 1 back to x and 2 back to y.

    switches are NO and configured as such. It doesn’t seem to matter what the xsn or xsx (or y or z) are configured to, I get the same results with all permutations.

    Below is the config I was running before the flash:

    $$
    [fb] firmware build 440.20
    [fv] firmware version 0.97
    [hp] hardware platform 1.00
    [hv] hardware version 8.00
    [id] TinyG ID 3Y2462-PPV
    [ja] junction acceleration 100000 mm
    [ct] chordal tolerance 0.0100 mm
    [sl] soft limit enable 1
    [st] switch type 0 [0=NO,1=NC]
    [mt] motor idle timeout 0.50 Sec
    [ej] enable json mode 0 [0=text,1=JSON]
    [jv] json verbosity 5 [0=silent,1=footer,2=messages,3=configs,4=linenum,5=verbose]
    [js] json serialize style 1 [0=relaxed,1=strict]
    [tv] text verbosity 1 [0=silent,1=verbose]
    [qv] queue report verbosity 1 [0=off,1=single,2=triple]
    [sv] status report verbosity 2 [0=off,1=filtered,2=verbose]
    [si] status interval 100 ms
    [ec] expand LF to CRLF on TX 0 [0=off,1=on]
    [ee] enable echo 0 [0=off,1=on]
    [ex] enable flow control 2 [0=off,1=XON/XOFF, 2=RTS/CTS]
    [baud] USB baud rate 5 [1=9600,2=19200,3=38400,4=57600,5=115200,6=230400]
    [net] network mode 0 [0=master]
    [gpl] default gcode plane 0 [0=G17,1=G18,2=G19]
    [gun] default gcode units mode 1 [0=G20,1=G21]
    [gco] default gcode coord system 1 [1-6 (G54-G59)]
    [gpa] default gcode path control 2 [0=G61,1=G61.1,2=G64]
    [gdi] default gcode distance mode 0 [0=G90,1=G91]
    [1ma] m1 map to axis 0 [0=X,1=Y,2=Z…]
    [1sa] m1 step angle 1.800 deg
    [1tr] m1 travel per revolution 5.0000 mm
    [1mi] m1 microsteps 1 [1,2,4,8]
    [1po] m1 polarity 0 [0=normal,1=reverse]
    [1pm] m1 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [2ma] m2 map to axis 1 [0=X,1=Y,2=Z…]
    [2sa] m2 step angle 1.800 deg
    [2tr] m2 travel per revolution 5.0000 mm
    [2mi] m2 microsteps 1 [1,2,4,8]
    [2po] m2 polarity 0 [0=normal,1=reverse]
    [2pm] m2 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [3ma] m3 map to axis 2 [0=X,1=Y,2=Z…]
    [3sa] m3 step angle 1.800 deg
    [3tr] m3 travel per revolution 5.0000 mm
    [3mi] m3 microsteps 1 [1,2,4,8]
    [3po] m3 polarity 1 [0=normal,1=reverse]
    [3pm] m3 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [4ma] m4 map to axis 3 [0=X,1=Y,2=Z…]
    [4sa] m4 step angle 1.800 deg
    [4tr] m4 travel per revolution 5.0000 mm
    [4mi] m4 microsteps 8 [1,2,4,8]
    [4po] m4 polarity 0 [0=normal,1=reverse]
    [4pm] m4 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [xam] x axis mode 1 [standard]
    [xvm] x velocity maximum 2200 mm/min
    [xfr] x feedrate maximum 4000 mm/min
    [xtn] x travel minimum 0.000 mm
    [xtm] x travel maximum 576.000 mm
    [xjm] x jerk maximum 10000 mm/min^3 * 1 million
    [xjh] x jerk homing 10000 mm/min^3 * 1 million
    [xjd] x junction deviation 0.0500 mm (larger is faster)
    [xsn] x switch min 3 [0=off,1=homing,2=limit,3=limit+homing]
    [xsx] x switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [xsv] x search velocity 2000 mm/min
    [xlv] x latch velocity 100 mm/min
    [xlb] x latch backoff 20.000 mm
    [xzb] x zero backoff 10.000 mm
    [yam] y axis mode 1 [standard]
    [yvm] y velocity maximum 2200 mm/min
    [yfr] y feedrate maximum 2000 mm/min
    [ytn] y travel minimum 0.000 mm
    [ytm] y travel maximum 381.000 mm
    [yjm] y jerk maximum 500 mm/min^3 * 1 million
    [yjh] y jerk homing 2000 mm/min^3 * 1 million
    [yjd] y junction deviation 0.0500 mm (larger is faster)
    [ysn] y switch min 3 [0=off,1=homing,2=limit,3=limit+homing]
    [ysx] y switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [ysv] y search velocity 2000 mm/min
    [ylv] y latch velocity 1000 mm/min
    [ylb] y latch backoff 5.000 mm
    [yzb] y zero backoff 1.000 mm
    [zam] z axis mode 1 [standard]
    [zvm] z velocity maximum 1500 mm/min
    [zfr] z feedrate maximum 2000 mm/min
    [ztn] z travel minimum -40.000 mm
    [ztm] z travel maximum 65.000 mm
    [zjm] z jerk maximum 100 mm/min^3 * 1 million
    [zjh] z jerk homing 2000 mm/min^3 * 1 million
    [zjd] z junction deviation 0.0500 mm (larger is faster)
    [zsn] z switch min 0 [0=off,1=homing,2=limit,3=limit+homing]
    [zsx] z switch max 3 [0=off,1=homing,2=limit,3=limit+homing]
    [zsv] z search velocity 2500 mm/min
    [zlv] z latch velocity 100 mm/min
    [zlb] z latch backoff 5.000 mm
    [zzb] z zero backoff 1.000 mm
    [aam] a axis mode 0 [disabled]
    [avm] a velocity maximum 230400 deg/min
    [afr] a feedrate maximum 230400 deg/min
    [atn] a travel minimum -1.000 deg
    [atm] a travel maximum -1.000 deg
    [ajm] a jerk maximum 5760 deg/min^3 * 1 million
    [ajh] a jerk homing 11520 deg/min^3 * 1 million
    [ajd] a junction deviation 0.0500 deg (larger is faster)
    [ara] a radius value 0.1990 deg
    [asn] a switch min 0 [0=off,1=homing,2=limit,3=limit+homing]
    [asx] a switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [asv] a search velocity 600 deg/min
    [alv] a latch velocity 100 deg/min
    [alb] a latch backoff 5.000 deg
    [azb] a zero backoff 2.000 deg
    [bam] b axis mode 0 [disabled]
    [bvm] b velocity maximum 3600 deg/min
    [bfr] b feedrate maximum 3600 deg/min
    [btn] b travel minimum -1.000 deg
    [btm] b travel maximum -1.000 deg
    [bjm] b jerk maximum 20 deg/min^3 * 1 million
    [bjd] b junction deviation 0.0500 deg (larger is faster)
    [bra] b radius value 1.0000 deg
    [cam] c axis mode 0 [disabled]
    [cvm] c velocity maximum 3600 deg/min
    [cfr] c feedrate maximum 3600 deg/min
    [ctn] c travel minimum -1.000 deg
    [ctm] c travel maximum -1.000 deg
    [cjm] c jerk maximum 20 deg/min^3 * 1 million
    [cjd] c junction deviation 0.0500 deg (larger is faster)
    [cra] c radius value 1.0000 deg
    [p1frq] pwm frequency 100 Hz
    [p1csl] pwm cw speed lo 1000 RPM
    [p1csh] pwm cw speed hi 2000 RPM
    [p1cpl] pwm cw phase lo 0.125 [0..1]
    [p1cph] pwm cw phase hi 0.200 [0..1]
    [p1wsl] pwm ccw speed lo 1000 RPM
    [p1wsh] pwm ccw speed hi 2000 RPM
    [p1wpl] pwm ccw phase lo 0.125 [0..1]
    [p1wph] pwm ccw phase hi 0.200 [0..1]
    [p1pof] pwm phase off 0.100 [0..1]
    [g54x] g54 x offset 0.000 mm
    [g54y] g54 y offset 0.000 mm
    [g54z] g54 z offset 0.000 mm
    [g54a] g54 a offset 0.000 deg
    [g54b] g54 b offset 0.000 deg
    [g54c] g54 c offset 0.000 deg
    [g55x] g55 x offset 0.000 mm
    [g55y] g55 y offset 0.000 mm
    [g55z] g55 z offset 0.000 mm
    [g55a] g55 a offset 0.000 deg
    [g55b] g55 b offset 0.000 deg
    [g55c] g55 c offset 0.000 deg
    [g56x] g56 x offset 0.000 mm
    [g56y] g56 y offset 0.000 mm
    [g56z] g56 z offset 0.000 mm
    [g56a] g56 a offset 0.000 deg
    [g56b] g56 b offset 0.000 deg
    [g56c] g56 c offset 0.000 deg
    [g57x] g57 x offset 0.000 mm
    [g57y] g57 y offset 0.000 mm
    [g57z] g57 z offset 0.000 mm
    [g57a] g57 a offset 0.000 deg
    [g57b] g57 b offset 0.000 deg
    [g57c] g57 c offset 0.000 deg
    [g58x] g58 x offset 0.000 mm
    [g58y] g58 y offset 0.000 mm
    [g58z] g58 z offset 0.000 mm
    [g58a] g58 a offset 0.000 deg
    [g58b] g58 b offset 0.000 deg
    [g58c] g58 c offset 0.000 deg
    [g59x] g59 x offset 0.000 mm
    [g59y] g59 y offset 0.000 mm
    [g59z] g59 z offset 0.000 mm
    [g59a] g59 a offset 0.000 deg
    [g59b] g59 b offset 0.000 deg
    [g59c] g59 c offset 0.000 deg
    [g92x] g92 x offset 0.000 mm
    [g92y] g92 y offset 0.000 mm
    [g92z] g92 z offset 0.000 mm
    [g92a] g92 a offset 0.000 deg
    [g92b] g92 b offset 0.000 deg
    [g92c] g92 c offset 0.000 deg
    [g28x] g28 x position 0.000 mm
    [g28y] g28 y position 0.000 mm
    [g28z] g28 z position 0.000 mm
    [g28a] g28 a position 0.000 deg
    [g28b] g28 b position 0.000 deg
    [g28c] g28 c position 0.000 deg
    [g30x] g30 x position 0.000 mm
    [g30y] g30 y position 0.000 mm
    [g30z] g30 z position 0.000 mm
    [g30a] g30 a position 0.000 deg
    [g30b] g30 b position 0.000 deg
    [g30c] g30 c position 0.000 deg
    tinyg [mm] ok>

    _____________________________________________

    Here is the config after flash and default=1:

    [fb] firmware build 440.20
    [fv] firmware version 0.97
    [hp] hardware platform 1.00
    [hv] hardware version 8.00
    [id] TinyG ID 3Y2462-PPV
    [ja] junction acceleration 2000000 mm
    [ct] chordal tolerance 0.0100 mm
    [sl] soft limit enable 0
    [st] switch type 1 [0=NO,1=NC]
    [mt] motor idle timeout 2.00 Sec
    [ej] enable json mode 0 [0=text,1=JSON]
    [jv] json verbosity 5 [0=silent,1=footer,2=messages,3=configs,4=linenum,5=verbose]
    [js] json serialize style 1 [0=relaxed,1=strict]
    [tv] text verbosity 1 [0=silent,1=verbose]
    [qv] queue report verbosity 0 [0=off,1=single,2=triple]
    [sv] status report verbosity 1 [0=off,1=filtered,2=verbose]
    [si] status interval 500 ms
    [ec] expand LF to CRLF on TX 0 [0=off,1=on]
    [ee] enable echo 0 [0=off,1=on]
    [ex] enable flow control 1 [0=off,1=XON/XOFF, 2=RTS/CTS]
    [baud] USB baud rate 5 [1=9600,2=19200,3=38400,4=57600,5=115200,6=230400]
    [net] network mode 0 [0=master]
    [gpl] default gcode plane 0 [0=G17,1=G18,2=G19]
    [gun] default gcode units mode 1 [0=G20,1=G21]
    [gco] default gcode coord system 1 [1-6 (G54-G59)]
    [gpa] default gcode path control 2 [0=G61,1=G61.1,2=G64]
    [gdi] default gcode distance mode 0 [0=G90,1=G91]
    [1ma] m1 map to axis 0 [0=X,1=Y,2=Z…]
    [1sa] m1 step angle 1.800 deg
    [1tr] m1 travel per revolution 40.0000 mm
    [1mi] m1 microsteps 8 [1,2,4,8]
    [1po] m1 polarity 1 [0=normal,1=reverse]
    [1pm] m1 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [2ma] m2 map to axis 1 [0=X,1=Y,2=Z…]
    [2sa] m2 step angle 1.800 deg
    [2tr] m2 travel per revolution 40.0000 mm
    [2mi] m2 microsteps 8 [1,2,4,8]
    [2po] m2 polarity 1 [0=normal,1=reverse]
    [2pm] m2 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [3ma] m3 map to axis 1 [0=X,1=Y,2=Z…]
    [3sa] m3 step angle 1.800 deg
    [3tr] m3 travel per revolution 40.0000 mm
    [3mi] m3 microsteps 8 [1,2,4,8]
    [3po] m3 polarity 0 [0=normal,1=reverse]
    [3pm] m3 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [4ma] m4 map to axis 2 [0=X,1=Y,2=Z…]
    [4sa] m4 step angle 1.800 deg
    [4tr] m4 travel per revolution 2.1166 mm
    [4mi] m4 microsteps 8 [1,2,4,8]
    [4po] m4 polarity 1 [0=normal,1=reverse]
    [4pm] m4 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [xam] x axis mode 1 [standard]
    [xvm] x velocity maximum 16000 mm/min
    [xfr] x feedrate maximum 16000 mm/min
    [xtn] x travel minimum 0.000 mm
    [xtm] x travel maximum 290.000 mm
    [xjm] x jerk maximum 5000 mm/min^3 * 1 million
    [xjh] x jerk homing 10000 mm/min^3 * 1 million
    [xjd] x junction deviation 0.0100 mm (larger is faster)
    [xsn] x switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [xsx] x switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [xsv] x search velocity 3000 mm/min
    [xlv] x latch velocity 100 mm/min
    [xlb] x latch backoff 10.000 mm
    [xzb] x zero backoff 2.000 mm
    [yam] y axis mode 1 [standard]
    [yvm] y velocity maximum 16000 mm/min
    [yfr] y feedrate maximum 16000 mm/min
    [ytn] y travel minimum 0.000 mm
    [ytm] y travel maximum 320.000 mm
    [yjm] y jerk maximum 5000 mm/min^3 * 1 million
    [yjh] y jerk homing 10000 mm/min^3 * 1 million
    [yjd] y junction deviation 0.0100 mm (larger is faster)
    [ysn] y switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [ysx] y switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [ysv] y search velocity 3000 mm/min
    [ylv] y latch velocity 100 mm/min
    [ylb] y latch backoff 10.000 mm
    [yzb] y zero backoff 2.000 mm
    [zam] z axis mode 1 [standard]
    [zvm] z velocity maximum 1000 mm/min
    [zfr] z feedrate maximum 1000 mm/min
    [ztn] z travel minimum -120.000 mm
    [ztm] z travel maximum 0.000 mm
    [zjm] z jerk maximum 50 mm/min^3 * 1 million
    [zjh] z jerk homing 1000 mm/min^3 * 1 million
    [zjd] z junction deviation 0.0100 mm (larger is faster)
    [zsn] z switch min 0 [0=off,1=homing,2=limit,3=limit+homing]
    [zsx] z switch max 1 [0=off,1=homing,2=limit,3=limit+homing]
    [zsv] z search velocity 1000 mm/min
    [zlv] z latch velocity 100 mm/min
    [zlb] z latch backoff 10.000 mm
    [zzb] z zero backoff 3.000 mm
    [aam] a axis mode 3 [radius]
    [avm] a velocity maximum 25920 deg/min
    [afr] a feedrate maximum 12960 deg/min
    [atn] a travel minimum -1.000 deg
    [atm] a travel maximum -1.000 deg
    [ajm] a jerk maximum 324000 deg/min^3 * 1 million
    [ajh] a jerk homing 324000 deg/min^3 * 1 million
    [ajd] a junction deviation 0.1000 deg (larger is faster)
    [ara] a radius value 5.3052 deg
    [asn] a switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [asx] a switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [asv] a search velocity 2000 deg/min
    [alv] a latch velocity 2000 deg/min
    [alb] a latch backoff 5.000 deg
    [azb] a zero backoff 2.000 deg
    [bam] b axis mode 0 [disabled]
    [bvm] b velocity maximum 3600 deg/min
    [bfr] b feedrate maximum 3600 deg/min
    [btn] b travel minimum -1.000 deg
    [btm] b travel maximum -1.000 deg
    [bjm] b jerk maximum 20 deg/min^3 * 1 million
    [bjd] b junction deviation 0.0100 deg (larger is faster)
    [bra] b radius value 1.0000 deg
    [cam] c axis mode 0 [disabled]
    [cvm] c velocity maximum 3600 deg/min
    [cfr] c feedrate maximum 3600 deg/min
    [ctn] c travel minimum -1.000 deg
    [ctm] c travel maximum -1.000 deg
    [cjm] c jerk maximum 20 deg/min^3 * 1 million
    [cjd] c junction deviation 0.0100 deg (larger is faster)
    [cra] c radius value 1.0000 deg
    [p1frq] pwm frequency 100 Hz
    [p1csl] pwm cw speed lo 1000 RPM
    [p1csh] pwm cw speed hi 2000 RPM
    [p1cpl] pwm cw phase lo 0.125 [0..1]
    [p1cph] pwm cw phase hi 0.200 [0..1]
    [p1wsl] pwm ccw speed lo 1000 RPM
    [p1wsh] pwm ccw speed hi 2000 RPM
    [p1wpl] pwm ccw phase lo 0.125 [0..1]
    [p1wph] pwm ccw phase hi 0.200 [0..1]
    [p1pof] pwm phase off 0.100 [0..1]
    [g54x] g54 x offset 0.000 mm
    [g54y] g54 y offset 0.000 mm
    [g54z] g54 z offset 0.000 mm
    [g54a] g54 a offset 0.000 deg
    [g54b] g54 b offset 0.000 deg
    [g54c] g54 c offset 0.000 deg
    [g55x] g55 x offset 145.000 mm
    [g55y] g55 y offset 160.000 mm
    [g55z] g55 z offset 0.000 mm
    [g55a] g55 a offset 0.000 deg
    [g55b] g55 b offset 0.000 deg
    [g55c] g55 c offset 0.000 deg
    [g56x] g56 x offset 0.000 mm
    [g56y] g56 y offset 0.000 mm
    [g56z] g56 z offset 0.000 mm
    [g56a] g56 a offset 0.000 deg
    [g56b] g56 b offset 0.000 deg
    [g56c] g56 c offset 0.000 deg
    [g57x] g57 x offset 0.000 mm
    [g57y] g57 y offset 0.000 mm
    [g57z] g57 z offset 0.000 mm
    [g57a] g57 a offset 0.000 deg
    [g57b] g57 b offset 0.000 deg
    [g57c] g57 c offset 0.000 deg
    [g58x] g58 x offset 0.000 mm
    [g58y] g58 y offset 0.000 mm
    [g58z] g58 z offset 0.000 mm
    [g58a] g58 a offset 0.000 deg
    [g58b] g58 b offset 0.000 deg
    [g58c] g58 c offset 0.000 deg
    [g59x] g59 x offset 0.000 mm
    [g59y] g59 y offset 0.000 mm
    [g59z] g59 z offset 0.000 mm
    [g59a] g59 a offset 0.000 deg
    [g59b] g59 b offset 0.000 deg
    [g59c] g59 c offset 0.000 deg
    [g92x] g92 x offset 0.000 mm
    [g92y] g92 y offset 0.000 mm
    [g92z] g92 z offset 0.000 mm
    [g92a] g92 a offset 0.000 deg
    [g92b] g92 b offset 0.000 deg
    [g92c] g92 c offset 0.000 deg
    [g28x] g28 x position 0.000 mm
    [g28y] g28 y position 0.000 mm
    [g28z] g28 z position 0.000 mm
    [g28a] g28 a position 0.000 deg
    [g28b] g28 b position 0.000 deg
    [g28c] g28 c position 0.000 deg
    [g30x] g30 x position 0.000 mm
    [g30y] g30 y position 0.000 mm
    [g30z] g30 z position 0.000 mm
    [g30a] g30 a position 0.000 deg
    [g30b] g30 b position 0.000 deg
    [g30c] g30 c position 0.000 deg
    tinyg [mm] ok>

    December 14, 2018 at 1:50 pm #11232
    cmcgrath5035
    Moderator

    After $defa=1, the switch type is NC.
    That command replaces all parameters with a default set that may/may not match your machine. You have to re-enter all your parameters

    You original parameter set looked OK(quick look), although you do have soft limits turned On, which may interact poorly with physical limit switches

    December 14, 2018 at 3:30 pm #11234
    fixxxer
    Member

    Good catch. I changed $st to NO, reset everything except for travel maxes, reset the TinyG, did an $$ and then tried to zero with the 28.2 x0. You can see what happens (after config).

    {“r”:{“fv”:0.970,”fb”:440.20,”hp”:1,”hv”:8,”id”:”3Y2462-PPV”,”msg”:”SYSTEM READY”},”f”:[1,0,0,5179]}
    $$
    [fb] firmware build 440.20
    [fv] firmware version 0.97
    [hp] hardware platform 1.00
    [hv] hardware version 8.00
    [id] TinyG ID 3Y2462-PPV
    [ja] junction acceleration 2000000 mm
    [ct] chordal tolerance 0.0100 mm
    [sl] soft limit enable 0
    [st] switch type 0 [0=NO,1=NC]
    [mt] motor idle timeout 2.00 Sec
    [ej] enable json mode 0 [0=text,1=JSON]
    [jv] json verbosity 5 [0=silent,1=footer,2=messages,3=configs,4=linenum,5=verbose]
    [js] json serialize style 1 [0=relaxed,1=strict]
    [tv] text verbosity 1 [0=silent,1=verbose]
    [qv] queue report verbosity 0 [0=off,1=single,2=triple]
    [sv] status report verbosity 1 [0=off,1=filtered,2=verbose]
    [si] status interval 500 ms
    [ec] expand LF to CRLF on TX 0 [0=off,1=on]
    [ee] enable echo 0 [0=off,1=on]
    [ex] enable flow control 1 [0=off,1=XON/XOFF, 2=RTS/CTS]
    [baud] USB baud rate 5 [1=9600,2=19200,3=38400,4=57600,5=115200,6=230400]
    [net] network mode 0 [0=master]
    [gpl] default gcode plane 0 [0=G17,1=G18,2=G19]
    [gun] default gcode units mode 1 [0=G20,1=G21]
    [gco] default gcode coord system 1 [1-6 (G54-G59)]
    [gpa] default gcode path control 2 [0=G61,1=G61.1,2=G64]
    [gdi] default gcode distance mode 0 [0=G90,1=G91]
    [1ma] m1 map to axis 0 [0=X,1=Y,2=Z…]
    [1sa] m1 step angle 1.800 deg
    [1tr] m1 travel per revolution 5.0000 mm
    [1mi] m1 microsteps 1 [1,2,4,8]
    [1po] m1 polarity 0 [0=normal,1=reverse]
    [1pm] m1 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [2ma] m2 map to axis 1 [0=X,1=Y,2=Z…]
    [2sa] m2 step angle 1.800 deg
    [2tr] m2 travel per revolution 5.0000 mm
    [2mi] m2 microsteps 1 [1,2,4,8]
    [2po] m2 polarity 0 [0=normal,1=reverse]
    [2pm] m2 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [3ma] m3 map to axis 2 [0=X,1=Y,2=Z…]
    [3sa] m3 step angle 1.800 deg
    [3tr] m3 travel per revolution 5.0000 mm
    [3mi] m3 microsteps 1 [1,2,4,8]
    [3po] m3 polarity 1 [0=normal,1=reverse]
    [3pm] m3 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [4ma] m4 map to axis 2 [0=X,1=Y,2=Z…]
    [4sa] m4 step angle 1.800 deg
    [4tr] m4 travel per revolution 2.1166 mm
    [4mi] m4 microsteps 8 [1,2,4,8]
    [4po] m4 polarity 1 [0=normal,1=reverse]
    [4pm] m4 power management 2 [0=disabled,1=always on,2=in cycle,3=when moving]
    [xam] x axis mode 1 [standard]
    [xvm] x velocity maximum 2000 mm/min
    [xfr] x feedrate maximum 2000 mm/min
    [xtn] x travel minimum 0.000 mm
    [xtm] x travel maximum 290.000 mm
    [xjm] x jerk maximum 5000 mm/min^3 * 1 million
    [xjh] x jerk homing 10000 mm/min^3 * 1 million
    [xjd] x junction deviation 0.0100 mm (larger is faster)
    [xsn] x switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [xsx] x switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [xsv] x search velocity 2000 mm/min
    [xlv] x latch velocity 100 mm/min
    [xlb] x latch backoff 20.000 mm
    [xzb] x zero backoff 10.000 mm
    [yam] y axis mode 1 [standard]
    [yvm] y velocity maximum 2000 mm/min
    [yfr] y feedrate maximum 2000 mm/min
    [ytn] y travel minimum 0.000 mm
    [ytm] y travel maximum 320.000 mm
    [yjm] y jerk maximum 5000 mm/min^3 * 1 million
    [yjh] y jerk homing 10000 mm/min^3 * 1 million
    [yjd] y junction deviation 0.0100 mm (larger is faster)
    [ysn] y switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [ysx] y switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [ysv] y search velocity 2000 mm/min
    [ylv] y latch velocity 100 mm/min
    [ylb] y latch backoff 10.000 mm
    [yzb] y zero backoff 2.000 mm
    [zam] z axis mode 1 [standard]
    [zvm] z velocity maximum 2000 mm/min
    [zfr] z feedrate maximum 2000 mm/min
    [ztn] z travel minimum -120.000 mm
    [ztm] z travel maximum 0.000 mm
    [zjm] z jerk maximum 50 mm/min^3 * 1 million
    [zjh] z jerk homing 1000 mm/min^3 * 1 million
    [zjd] z junction deviation 0.0100 mm (larger is faster)
    [zsn] z switch min 0 [0=off,1=homing,2=limit,3=limit+homing]
    [zsx] z switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [zsv] z search velocity 2000 mm/min
    [zlv] z latch velocity 100 mm/min
    [zlb] z latch backoff 10.000 mm
    [zzb] z zero backoff 3.000 mm
    [aam] a axis mode 3 [radius]
    [avm] a velocity maximum 25920 deg/min
    [afr] a feedrate maximum 12960 deg/min
    [atn] a travel minimum -1.000 deg
    [atm] a travel maximum -1.000 deg
    [ajm] a jerk maximum 324000 deg/min^3 * 1 million
    [ajh] a jerk homing 324000 deg/min^3 * 1 million
    [ajd] a junction deviation 0.1000 deg (larger is faster)
    [ara] a radius value 5.3052 deg
    [asn] a switch min 1 [0=off,1=homing,2=limit,3=limit+homing]
    [asx] a switch max 0 [0=off,1=homing,2=limit,3=limit+homing]
    [asv] a search velocity 2000 deg/min
    [alv] a latch velocity 2000 deg/min
    [alb] a latch backoff 5.000 deg
    [azb] a zero backoff 2.000 deg
    [bam] b axis mode 0 [disabled]
    [bvm] b velocity maximum 3600 deg/min
    [bfr] b feedrate maximum 3600 deg/min
    [btn] b travel minimum -1.000 deg
    [btm] b travel maximum -1.000 deg
    [bjm] b jerk maximum 20 deg/min^3 * 1 million
    [bjd] b junction deviation 0.0100 deg (larger is faster)
    [bra] b radius value 1.0000 deg
    [cam] c axis mode 0 [disabled]
    [cvm] c velocity maximum 3600 deg/min
    [cfr] c feedrate maximum 3600 deg/min
    [ctn] c travel minimum -1.000 deg
    [ctm] c travel maximum -1.000 deg
    [cjm] c jerk maximum 20 deg/min^3 * 1 million
    [cjd] c junction deviation 0.0100 deg (larger is faster)
    [cra] c radius value 1.0000 deg
    [p1frq] pwm frequency 100 Hz
    [p1csl] pwm cw speed lo 1000 RPM
    [p1csh] pwm cw speed hi 2000 RPM
    [p1cpl] pwm cw phase lo 0.125 [0..1]
    [p1cph] pwm cw phase hi 0.200 [0..1]
    [p1wsl] pwm ccw speed lo 1000 RPM
    [p1wsh] pwm ccw speed hi 2000 RPM
    [p1wpl] pwm ccw phase lo 0.125 [0..1]
    [p1wph] pwm ccw phase hi 0.200 [0..1]
    [p1pof] pwm phase off 0.100 [0..1]
    tinyg [mm] ok>

    ________________________________

    g28.2 x0
    tinyg [mm] ok>
    posx:0.000,posy:0.000,posz:0.000,posa:0.000,feed:0.00,vel:0.00,unit:1,coor:0,dist:1,frmo:1,stat:9
    posx:-15.389,feed:2000.00,vel:2000.00
    posx:-31.716
    posx:-48.042
    posx:-64.202
    posx:-80.530
    posx:-96.857
    posx:-113.017
    posx:-129.344
    posx:-145.671
    posx:-161.997
    posx:-178.153,vel:1998.25
    posx:-178.884,vel:1.75
    posx:-310.000,feed:0.00,vel:0.00,coor:1,dist:0,stat:3

    It’s gradually moving in the -x direction until it hits the switch, where it jumps up to -310. It isn’t doing any of the homing sequence. It doesn’t do latch or backoff OR try to zero the machine. $posx still says -310. Any ideas?

    December 14, 2018 at 4:29 pm #11235
    cmcgrath5035
    Moderator

    Does g28.2 y0 similarly misbehave?
    Are you running all this from Coolterm, Chilipeppr, or ?

    Any flashing LEDs when it stops?

    Are limits mechanical microswitches or electronic switches?

    December 14, 2018 at 5:01 pm #11236
    fixxxer
    Member

    No, 28.2 y and z are great. Not only that, if I change the max and mins around for x (so that it homes in the positive direction) the max switch works fine(this is with max as homing and limit and min as limit only). That is, it performs the backoff but at the other end of the machine.

    Regarding LED, after the switch is hit, the PWM stays solid but other than the power light, there’s nothing flashing. Now the machine at this point says $posx= negative 5xx. When I enter g0 x10, as soon as it moves off the switch I get the “limit switch hit” error and the lights go on and all. I’ve been using the heck out of this remote reset switch.

    I am running coolterm and chilipeppr, with the same results for each. I noticed the problem sometime after I started using chilipeppr, but I can’t point to it as the culprit.

    Now in diagnostic land, this all points to the switch at the xmin. It’s obvious. Which is why I replaced it last week. Boy was I surprised to see that it wasn’t the problem.

    The switches are spring loaded pogo pins soldered to wires.

    Is there somehow an option to configure different switch types for different axes? It’s almost as if the xsn is configured differently. I’m baffled, this is a relatively new problem with zero hardware changes (until last week). I’ve been running the machine for at least 6 months.

    December 15, 2018 at 7:22 am #11237
    cmcgrath5035
    Moderator

    Thanks, good info to work with.
    Some housekeeping, looking at your most recent $$
    1. Set $p1pof=0.0 With that, the Spin LED will be off when the spindle is turned off
    2. Set $asn=0 to turn off the A axis limit switch input.
    3. With tinyG, all switches share the same config, NC or NO. Switches are individually configurable in G2Core (the next generation)
    4. I am somewhat concerned with you switch (pogo pins) but they used to work so probably not the issue. tinyG has debounce software conditioning the input signal that has been experimentally optimized for typical microswitches. The contact bounce from you pogo setup might be significantly worse, but probably OK.

    I think I might see your issue.
    Your first $$ post showed the $xtr=$ytr=40mm.
    After $defa=1 it is 5mm, so your axes are moving 8 times faster than tinyG is computing. So the reported movement of -178mm to (apparently)find home on X is actually 8*178mm, which does not make sense since your physical machine is not that large.

    Fix $tr values (and microsteps while you are at it) and see if that helps.

    December 15, 2018 at 3:44 pm #11238
    cmcgrath5035
    Moderator

    I got to thinking about your switch.

    I understand that a wire soldered to pogo pin is one lead, what is the other lead?
    If it is the metal gantry or rail structure, I would be concerned – a huge noise accumulator.

    December 15, 2018 at 6:57 pm #11239
    fixxxer
    Member

    I’ll spare you the details but I’ve been running tests since your last post. Yes, I’m using the gantry as the ground lead for the circuit. why it works on the other switches I don’t know. I insulated a new ground from the gantry and aligned it in the same place to strike the pogo pin and it worked! Thanks, I feel like a dummy. noise accumulation?! =( I have a repeatable zero again! Thank you so much, you are a god send. I need to buy you a beer. This has been a thorn in my side for months.

    December 16, 2018 at 5:17 pm #11246
    cmcgrath5035
    Moderator

    Good news!

    And note, you should use shielded twisted pair for connecting up your switches.

    See https://github.com/synthetos/TinyG/wiki/Homing-and-Limits-Setup-and-Troubleshooting#limit-switches-fire-in-the-middle-of-a-cutting-job

    I’ll take a raincheck on the beer 😉

    • This reply was modified 5 years, 11 months ago by cmcgrath5035.
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