Home › Forums › TinyG › TinyG Support › Error :st_prep_line() move time is NAN
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August 13, 2014 at 4:58 am #6619psykoMember
Hello,
I recently had the error :
st_prep_line() move time is NAN
It was during manual motion (typing command using a custom made software).
Below is the only extract I got from the logs :{"qr":28,"qi":1,"qo":1} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":1.516,"feed":1000.00,"vel":1000.00,"momo":1}} {"sr":{"posx":3.182}} {"sr":{"posx":4.115,"vel":8.52}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":3.959,"feed":100.00,"vel":100.00}} {"sr":{"posx":3.792}} {"sr":{"posx":3.634}} {"sr":{"posx":3.467}} {"sr":{"posx":3.301}} {"sr":{"posx":3.142}} {"sr":{"posx":3.012,"vel":9.96}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":1.512,"feed":1000.00,"vel":1000.00}} {"sr":{"posx":297.000,"vel":0.00}} {"qr":28,"qi":0,"qo":1} {"sr":{"posx":0.000,"feed":10000.00,"coor":1,"dist":0,"momo":4,"stat":3}} {"qr":28,"qi":1,"qo":1} {"xsv":1500} {"r":{"xsv":1500},"f":[1,0,13,4562]} G28.2X0 {"r":{"gc":"G28.2X0"},"f":[1,0,8,299]} {"sr":{"coor":0,"dist":1,"stat":9}} {"qr":28,"qi":1,"qo":1} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":2.210,"feed":1500.00,"vel":1500.00,"momo":1}} {"sr":{"posx":4.533,"vel":519.90}} {"sr":{"posx":4.545,"vel":7.61}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":4.389,"feed":100.00,"vel":100.00}} {"sr":{"posx":4.231}} {"sr":{"posx":4.065}} {"sr":{"posx":3.898}} {"sr":{"posx":3.740}} {"sr":{"posx":3.626,"vel":9.96}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":1.329,"feed":1500.00,"vel":1500.00}} {"sr":{"posx":297.000,"vel":0.00}} {"qr":28,"qi":0,"qo":1} {"qr":28,"qi":1,"qo":1} G28.2X0 {"r":{"gc":"G28.2X0"},"f":[1,0,8,299]} {"sr":{"posx":0.000,"feed":10000.00,"momo":4}} {"qr":28,"qi":1,"qo":1} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":2.085,"feed":1500.00,"vel":1500.00,"momo":1}} {"sr":{"posx":4.494,"vel":980.05}} {"sr":{"posx":4.545,"vel":7.61}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":4.381,"feed":100.00,"vel":100.00}} {"sr":{"posx":4.215}} {"sr":{"posx":4.056}} {"sr":{"posx":3.890}} {"sr":{"posx":3.723}} {"sr":{"posx":3.651,"vel":9.96}} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":1.599,"feed":1500.00,"vel":1500.00}} {"sr":{"posx":297.000,"vel":0.00}} {"qr":28,"qi":0,"qo":1} {"sr":{"posx":0.000,"feed":10000.00,"coor":1,"dist":0,"momo":4,"stat":3}} {"qr":28,"qi":1,"qo":1} {"xjh":100000} {"r":{"xjh":100000},"f":[1,0,15,4029]} G28.2X0 {"r":{"gc":"G28.2X0"},"f":[1,0,8,299]} {"sr":{"coor":0,"dist":1,"stat":9}} {"qr":28,"qi":1,"qo":1} {"qr":27,"qi":1,"qo":0} {"sr":{"posx":2.308,"feed":1500.00,"vel":1500.00,"momo":1}} {"sr":{"posx":4.366,"vel":52.47}} {"er":{"fb":435.10,"st":31,"msg":"st_prep_line() move time is NAN"}} prep_null encountered
And another one while playing with the A Axis:
G0A360F3600 {"r":{"gc":"G0A360F3600"},"f":[1,0,12,1899]} {"sr":{"posa":0.006,"feed":3600.00,"vel":71.25,"stat":5}} {"qr":27,"qi":1,"qo":0} {"sr":{"posa":36.420,"vel":10000.00}} {"sr":{"posa":77.205}} {"sr":{"posa":117.990}} {"sr":{"posa":158.775}} {"sr":{"posa":199.561}} {"sr":{"posa":240.346}} {"sr":{"posa":281.130}} ! {"sr":{"posa":303.400,"vel":2.91,"stat":6}} % {"sr":{"vel":0.00,"stat":3}} G1A360F30 {"er":{"fb":435.10,"st":31,"msg":"st_prep_line() move time is NAN"}} prep_null encountered!
Note that I’ve been able to run several long job (couple hours) since this error without reproducing it.
I just wanted to mention this.My settings (I’m not sure they were exactly the same when running into the prep_null error…)
[fb] firmware build 435.10 [fv] firmware version 0.97 [hp] hardware platform 1.00 [hv] hardware version 8.00 [id] TinyG ID 9H3583-PXN [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 180.00 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 2 [0=off,1=single,2=triple] [sv] status report verbosity 1 [0=off,1=filtered,2=verbose] [si] status interval 250 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 0 [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 0.900 deg [1tr] m1 travel per revolution 32.0000 mm [1mi] m1 microsteps 8 [1,2,4,8] [1po] m1 polarity 1 [0=normal,1=reverse] [1pm] m1 power management 1 [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 0.900 deg [2tr] m2 travel per revolution 32.0000 mm [2mi] m2 microsteps 8 [1,2,4,8] [2po] m2 polarity 1 [0=normal,1=reverse] [2pm] m2 power management 1 [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 2.1170 mm [3mi] m3 microsteps 8 [1,2,4,8] [3po] m3 polarity 0 [0=normal,1=reverse] [3pm] m3 power management 1 [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 75.0000 mm [4mi] m4 microsteps 8 [1,2,4,8] [4po] m4 polarity 1 [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 1500 mm/min [xfr] x feedrate maximum 1500 mm/min [xtn] x travel minimum 0.000 mm [xtm] x travel maximum 300.000 mm [xjm] x jerk maximum 5000 mm/min^3 * 1 million [xjh] x jerk homing 30000 mm/min^3 * 1 million [xjd] x junction deviation 0.0100 mm (larger is faster) [xsn] x switch min 0 [0=off,1=homing,2=limit,3=limit+homing] [xsx] x switch max 1 [0=off,1=homing,2=limit,3=limit+homing] [xsv] x search velocity 1000 mm/min [xlv] x latch velocity 100 mm/min [xlb] x latch backoff 20.000 mm [xzb] x zero backoff 3.000 mm [yam] y axis mode 1 [standard] [yvm] y velocity maximum 1500 mm/min [yfr] y feedrate maximum 1500 mm/min [ytn] y travel minimum 0.000 mm [ytm] y travel maximum 220.000 mm [yjm] y jerk maximum 5000 mm/min^3 * 1 million [yjh] y jerk homing 30000 mm/min^3 * 1 million [yjd] y junction deviation 0.0100 mm (larger is faster) [ysn] y switch min 0 [0=off,1=homing,2=limit,3=limit+homing] [ysx] y switch max 1 [0=off,1=homing,2=limit,3=limit+homing] [ysv] y search velocity 1000 mm/min [ylv] y latch velocity 100 mm/min [ylb] y latch backoff 20.000 mm [yzb] y zero backoff 3.000 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 0.000 mm [ztm] z travel maximum 100.000 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 800 mm/min [zlv] z latch velocity 100 mm/min [zlb] z latch backoff 20.000 mm [zzb] z zero backoff 10.000 mm [aam] a axis mode 1 [standard] [avm] a velocity maximum 48000 deg/min [afr] a feedrate maximum 48000 deg/min [atn] a travel minimum -1.000 deg [atm] a travel maximum -1.000 deg [ajm] a jerk maximum 24000 deg/min^3 * 1 million [ajh] a jerk homing 24000 deg/min^3 * 1 million [ajd] a junction deviation 0.1000 deg (larger is faster) [ara] a radius value 0.0000 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 6000 deg/min [alv] a latch velocity 1000 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 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
August 13, 2014 at 10:37 am #6620aldenMemberOK. Thanks for the thorough post. I’ll take a closer look at this when I’m back at my shop.
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