m3 stops axis movement

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14 years 4 months ago #21087 by er11cul
m3 stops axis movement was created by er11cul
I tried to work on a machine which fits in no conventional
group, but it is compareable to a lathe.

If I program something like:
g01 x100
m3 s300
g01 x200

The machine stops for at about one second while
executing the m3 (setting spindle speed) command.
Why is that? Any Idea to avoid this delay?

It is a big problem for me, because an unwanted delay breaks
the function of my machine.

Executing M3 should be independend from axes movement, shouldn't it?

thank you

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14 years 4 months ago #21089 by andypugh
Replied by andypugh on topic Re:m3 stops axis movement
er11cul wrote:

The machine stops for at about one second while
executing the m3 (setting spindle speed) command.
Why is that? Any Idea to avoid this delay?

That isn't something that I have seen (and would cause real problems with constant-surface-speed mode on a lathe.)
Do you have the spindle-at-speed pin connected in HAL? Where did you get the configuration from?
Spindle-at-speed pauses motion until a spindle-good signal is received. Some example and simulated configs have this connected.

It is a big problem for me, because an unwanted delay breaks
the function of my machine.

Is M3 setting an actual spindle speed, or is it being used for something else? There may be more appropriate ways to do it.

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14 years 4 months ago #21096 by er11cul
Replied by er11cul on topic Re:m3 stops axis movement
andypugh wrote:

That isn't something that I have seen (and would cause real problems with constant-surface-speed mode on a lathe.)
Do you have the spindle-at-speed pin connected in HAL? Where did you get the configuration from?


I connected the spindle to "Spindle PWM" as suggested by the stepconf wizard.
This is where I got my confuguartion from.
Ths Spindle PWM signal is transformed to 0-10V by external electronic and goes to my frequency converter input.

Spindle-at-speed pauses motion until a spindle-good signal is received. Some example and simulated configs have this connected.

There is no hardware connection for such a signal.

Is M3 setting an actual spindle speed, or is it being used for something else? There may be more appropriate ways to do it.

Only for spindle speed.
My machine consists of a spindle one axis and two end-switches only. No more.
I have to set the spindle speed and move with the (X) axis.
What would be a more appropriate way to set the spindle speed?
I tried also things like
G01 X200 S300
with the same result.

Thanks

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14 years 4 months ago #21114 by andypugh
Replied by andypugh on topic Re:m3 stops axis movement
er11cul wrote:

Spindle-at-speed pauses motion until a spindle-good signal is received. Some example and simulated configs have this connected.

There is no hardware connection for such a signal.


I am puzzled then. Can you share your HAL file with us?

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14 years 4 months ago #21140 by er11cul
Replied by er11cul on topic Re:m3 stops axis movement
Code:
loadrt trivkins loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES loadrt probe_parport loadrt hal_parport cfg="0x378 out " loadrt stepgen step_type=0,0,0 loadrt pwmgen output_type=0 addf parport.0.read base-thread addf stepgen.make-pulses base-thread addf pwmgen.make-pulses base-thread addf parport.0.write base-thread addf stepgen.capture-position servo-thread addf motion-command-handler servo-thread addf motion-controller servo-thread addf stepgen.update-freq servo-thread addf pwmgen.update servo-thread net spindle-cmd <= motion.spindle-speed-out => pwmgen.0.value net spindle-enable <= motion.spindle-on => pwmgen.0.enable net spindle-pwm <= pwmgen.0.pwm setp pwmgen.0.pwm-freq 60.0 setp pwmgen.0.scale 1166.66666667 setp pwmgen.0.offset 0.114285714286 setp pwmgen.0.dither-pwm true net xstep => parport.0.pin-02-out net xdir => parport.0.pin-03-out net spindle-pwm => parport.0.pin-16-out setp parport.0.pin-17-out-invert 1 net xenable => parport.0.pin-17-out net max-home-x <= parport.0.pin-10-in-not net min-x <= parport.0.pin-11-in-not net estop-ext <= parport.0.pin-15-in setp stepgen.0.position-scale [AXIS_0]SCALE setp stepgen.0.steplen 1 setp stepgen.0.stepspace 1 setp stepgen.0.dirhold 62000 setp stepgen.0.dirsetup 62000 setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb net xstep <= stepgen.0.step net xdir <= stepgen.0.dir net xenable axis.0.amp-enable-out => stepgen.0.enable net max-home-x => axis.0.home-sw-in net min-x => axis.0.neg-lim-sw-in net max-home-x => axis.0.pos-lim-sw-in setp stepgen.1.position-scale [AXIS_1]SCALE setp stepgen.1.steplen 1 setp stepgen.1.stepspace 1 setp stepgen.1.dirhold 62000 setp stepgen.1.dirsetup 62000 setp stepgen.1.maxaccel [AXIS_1]STEPGEN_MAXACCEL net ypos-cmd axis.1.motor-pos-cmd => stepgen.1.position-cmd net ypos-fb stepgen.1.position-fb => axis.1.motor-pos-fb net ystep <= stepgen.1.step net ydir <= stepgen.1.dir net yenable axis.1.amp-enable-out => stepgen.1.enable setp stepgen.2.position-scale [AXIS_2]SCALE setp stepgen.2.steplen 1 setp stepgen.2.stepspace 1 setp stepgen.2.dirhold 62000 setp stepgen.2.dirsetup 62000 setp stepgen.2.maxaccel [AXIS_2]STEPGEN_MAXACCEL net zpos-cmd axis.2.motor-pos-cmd => stepgen.2.position-cmd net zpos-fb stepgen.2.position-fb => axis.2.motor-pos-fb net zstep <= stepgen.2.step net zdir <= stepgen.2.dir net zenable axis.2.amp-enable-out => stepgen.2.enable net estop-out <= iocontrol.0.user-enable-out net estop-ext => iocontrol.0.emc-enable-in net tool-number <= iocontrol.0.tool-prep-number net tool-change-loopback iocontrol.0.tool-change => iocontrol.0.tool-changed net tool-prepare-loopback iocontrol.0.tool-prepare => iocontrol.0.tool-prepared

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14 years 4 months ago #21144 by andypugh
Replied by andypugh on topic Re:m3 stops axis movement
I can't see anything wrong there. Which doesn't mean that there might not be something I am not seeing.

What is the g-code doing? Are you using G33, G33.1 or G95?

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