Homing Error

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  • December 22, 2014 at 11:31 pm #7212
    mristau
    Member

    Need help interpreting this error

    {“er”:{“fb”:435.10,”st”:31,”msg”:”st_prep_line() move time is NAN”}}
    prep_null encountered

    So I can know what to correct.

    If there is a resource error code, I’m not finding…

    December 23, 2014 at 3:52 am #7213
    chmr
    Member

    Hi,
    fb is your firmware build,
    st is the status code as found in the source tinyg.h as STAT_PREP_LINE_MOVE_TIME_IS_NAN (comment: Never supposed to happen).

    Check your $$ parameters, possibly one of them is set to NaN. If so, reset to default and reenter all customized parameters.

    December 23, 2014 at 1:59 pm #7214
    mristau
    Member

    Thanks chmr

    Below is a dump from my tinyG. I’m not seeing anything.
    So, just hit the reset button and send only the setup strings that differ from default?

    [fb] firmware build 435.10
    [fv] firmware version 0.97
    [hp] hardware platform 1.00
    [hv] hardware version 8.00
    [id] TinyG ID 3X3566-UZR
    [ja] junction acceleration 2000000 mm
    [ct] chordal tolerance 0.010 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 3 [0=silent,1=footer,2=messages,3=configs,4=linenum,5=verbose]
    [js] json serialize style 1 [0=relaxed,1=strict]
    [tv] text verbosity 0 [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 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 0 [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 36.5400 mm
    [1mi] m1 microsteps 8 [1,2,4,8]
    [1po] m1 polarity 1 [0=normal,1=reverse]
    [1pm] m1 power management 0 [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 36.5400 mm
    [2mi] m2 microsteps 8 [1,2,4,8]
    [2po] m2 polarity 0 [0=normal,1=reverse]
    [2pm] m2 power management 0 [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 36.5400 mm
    [3mi] m3 microsteps 8 [1,2,4,8]
    [3po] m3 polarity 1 [0=normal,1=reverse]
    [3pm] m3 power management 0 [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 36.5400 mm
    [4mi] m4 microsteps 8 [1,2,4,8]
    [4po] m4 polarity 0 [0=normal,1=reverse]
    [4pm] m4 power management 1 [0=disabled,1=always on,2=in cycle,3=when moving]
    [xam] x axis mode 1 [standard]
    [xvm] x velocity maximum 10000 mm/min
    [xfr] x feedrate maximum 10000 mm/min
    [xtn] x travel minimum 0.000 mm
    [xtm] x travel maximum 1050.000 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 1.000 mm
    [yam] y axis mode 1 [standard]
    [yvm] y velocity maximum 10000 mm/min
    [yfr] y feedrate maximum 10000 mm/min
    [ytn] y travel minimum 0.000 mm
    [ytm] y travel maximum 1050.000 mm
    [yjm] y jerk maximum 50 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 3 mm/min
    [ylv] y latch velocity 100 mm/min
    [ylb] y latch backoff 3.000 mm
    [yzb] y zero backoff 5.000 mm
    [zam] z axis mode 1 [standard]
    [zvm] z velocity maximum 600 mm/min
    [zfr] z feedrate maximum 600 mm/min
    [ztn] z travel minimum -95.000 mm
    [ztm] z travel maximum 0.000 mm
    [zjm] z jerk maximum 5000 mm/min^3 * 1 million
    [zjh] z jerk homing 10000 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 600 mm/min
    [zlv] z latch velocity 100 mm/min
    [zlb] z latch backoff 10.000 mm
    [zzb] z zero backoff 5.000 mm
    [aam] a axis mode 1 [standard]
    [avm] a velocity maximum 3600 deg/min
    [afr] a feedrate maximum 3600 deg/min
    [atn] a travel minimum -1.000 deg
    [atm] a travel maximum -1.000 deg
    [ajm] a jerk maximum 2400 deg/min^3 * 1 million
    [ajh] a jerk homing 2400 deg/min^3 * 1 million
    [ajd] a junction deviation 0.0500 deg (larger is faster)
    [ara] a radius value 1.0000 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 10.000 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 5000 Hz
    [p1csl] pwm cw speed lo 0 RPM
    [p1csh] pwm cw speed hi 10000 RPM
    [p1cpl] pwm cw phase lo 0.000 [0..1]
    [p1cph] pwm cw phase hi 1.000 [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 0.000 [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 110.000 mm
    [g55y] g55 y offset 110.000 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 110.000 mm
    [g56y] g56 y offset 20.000 mm
    [g56z] g56 z offset -10.000 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

    December 23, 2014 at 7:47 pm #7215
    cmcgrath5035
    Moderator

    mristau
    I suggest you upgrade to tinyG fw build 438.02, it may/may not help here.

    We have seen situations where parameter issues were not obvious.
    A defa=1 command will reset everything to default. So will installing the new FW.

    If you can, use this method to post parameters

    Makes viewing the parameters much easier.

    I see flow control is turned off. What are you using to send GCode?
    Or perhaps a better question, what command or commands resulted in the error message?

    All for motors have the same $*tr = 36.544mm. Is that correct?

    December 23, 2014 at 10:29 pm #7216
    mristau
    Member

    Thanks for the help.

    The command that caused the error was: G28.2 X0 Y0

    Tried to use TGfx to update firmware to 438.02 but still shows 435.10?

    I’m using Coolterm Windows version.

    December 24, 2014 at 5:53 am #7217
    cmcgrath5035
    Moderator

    I suggest you try avrdude to update FW. Follow guides here

    December 31, 2014 at 7:30 am #7238
    cmcgrath5035
    Moderator

    See

    January 9, 2015 at 1:13 am #7270
    mristau
    Member

    As suggested above, I’ve reset to default values and revised with my custom settings. Result: No more homing error. (Still with firmware 435.10)

    January 9, 2015 at 11:54 am #7273
    cmcgrath5035
    Moderator

    If I recall correctly, the bugs fixed in 438.02 were related to accumulated errors with very short moves(moves less than the minimum X-Y move).
    You should get your machine up to to 438.02 sometime, but if 435.10 works for you for now, enjoy.

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