On Tuesday 20 March 2018 15:00:16 Mark wrote:

> Managed to get some shop time today, and was working on the lincurve
> stuff.  Got most of the kinks worked out, as it now loads without
> error, but now getting joint following errors as soon as I try to home
> the machine.  Nota beni, prior to using the lincurve hal code, the
> machine homed fine with no errors. Here's the error I get once I start
> the homing sequence:
>
> mark@canecutter:~$ /usr/bin/linuxcnc
> '/home/mark/linuxcnc/configs/Cane-Cutter/Cane-Cutter.ini'
> LINUXCNC - 2.7.12
> Machine configuration directory is
> '/home/mark/linuxcnc/configs/Cane-Cutter' Machine configuration file
> is 'Cane-Cutter.ini'
> Starting LinuxCNC...
> .
> Found file(REL): ./Cane-Cutter.hal
> Found file(REL): ./lin_curve.hal
> joint 2 following error
> emc/task/taskintf.cc 617: Error on axis 2, command number 65
>
> Here's the current main hal file:
>
> ##############################
>
> # Generated by stepconf at Sat Mar 13 15:20:58 201
> # If you make changes to this file, they will be
> # overwritten when you run stepconf again
>
> loadrt trivkins
> loadrt [EMCMOT]EMCMOT base_period_nsec=[EMCMOT]BASE_PERIOD
> servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES
> loadrt hal_parport cfg="0xec00 out 0e000 in"
> setp parport.0.reset-time 5000
> loadrt stepgen step_type=0,0,0
> addf parport.0.read base-thread
> addf stepgen.make-pulses base-thread
> addf parport.0.write base-thread
> addf parport.0.reset 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
> net spindle-cmd <= motion.spindle-speed-out
> addf parport.1.read base-thread  # added for pendant
> addf parport.1.write base-thread  # added for pendant
>
> ##########################
>
> setp stepgen.0.position-scale [AXIS_0]SCALE
> setp stepgen.0.steplen 1
> setp stepgen.0.stepspace 0
> setp stepgen.0.dirhold 33934
> setp stepgen.0.dirsetup 33934
> setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL
> setp stepgen.1.position-scale [AXIS_0]SCALE
> setp stepgen.1.steplen 1
> setp stepgen.1.stepspace 0
> setp stepgen.1.dirhold 33934
> setp stepgen.1.dirsetup 33934
> setp stepgen.1.maxaccel [AXIS_0]STEPGEN_MAXACCEL
> net ypos-cmd axis.1.motor-pos-cmd => axis.1.motor-pos-fb
> net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd
> stepgen.1.position-cmd
> net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb
> setp parport.0.pin-02-out-invert 1
> setp parport.0.pin-03-out-invert 1
> setp parport.0.pin-04-out-invert 1
> #setp parport.0.pin-05-out-invert 1
> net x1step  stepgen.0.step => parport.0.pin-02-out
> net x1dir   stepgen.0.dir => parport.0.pin-03-out
> net x2step  stepgen.1.step => parport.0.pin-04-out
> net x2dir   stepgen.1.dir => parport.0.pin-05-out
> net xenable axis.0.amp-enable-out => stepgen.0.enable stepgen.1.enable
> net home-x => axis.0.home-sw-in
> net both-x => axis.0.neg-lim-sw-in
> net both-x => axis.0.pos-lim-sw-in
>
> ##############################
>
> setp stepgen.2.position-scale [AXIS_2]SCALE
> setp stepgen.2.steplen 1
> setp stepgen.2.stepspace 0
> setp stepgen.2.dirhold 33934
> setp stepgen.2.dirsetup 33934
> setp stepgen.2.maxaccel [AXIS_2]STEPGEN_MAXACCEL
> #net zpos-cmd axis.2.motor-pos-cmd => stepgen.2.position-cmd
> net zpos-cmd stepgen.2.position-cmd
> #net zpos-fb stepgen.2.position-fb => axis.2.motor-pos-fb
> net zpos-fb stepgen.2.position-fb
> setp parport.0.pin-06-out-invert 1
> net zstep => parport.0.pin-06-out
> setp parport.0.pin-06-out-reset 1
> net zdir => parport.0.pin-07-out
> net zstep <= stepgen.2.step
> net zdir <= stepgen.2.dir
> net zenable axis.2.amp-enable-out => stepgen.2.enable
> net home-z => axis.2.home-sw-in
> net both-z => axis.2.neg-lim-sw-in
> net both-z => axis.2.pos-lim-sw-in
>
>
>
>
>
> loadusr -W hal_manualtoolchange
> net tool-change iocontrol.0.tool-change => hal_manualtoolchange.change
> net tool-changed iocontrol.0.tool-changed <=
> hal_manualtoolchange.changed net tool-number
> iocontrol.0.tool-prep-number => hal_manualtoolchange.number net
> tool-prepare-loopback iocontrol.0.tool-prepare =>
> iocontrol.0.tool-prepared
>
> ##################################
>
>
> Here's the current lincurve hal file:
>
> ##################################
>
> loadrt lincurve personality=16
> loadrt offset
> addf lincurve.0 servo-thread
> addf offset.0.update-output servo-thread
>
>
> setp lincurve.0.x-val-00 3.000
> setp lincurve.0.y-val-00 -0.007
> setp lincurve.0.x-val-01 5.000
> setp lincurve.0.y-val-01 0.000
> setp lincurve.0.x-val-02 11.000
> setp lincurve.0.y-val-02 0.000
> setp lincurve.0.x-val-03 12.000
> setp lincurve.0.y-val-03 -0.001
> setp lincurve.0.x-val-04 18.000
> setp lincurve.0.y-val-04 -0.001
> setp lincurve.0.x-val-05 19.000
> setp lincurve.0.y-val-05 0.000
> setp lincurve.0.x-val-06 27.000
> setp lincurve.0.y-val-06 0.000
> setp lincurve.0.x-val-07 28.000
> setp lincurve.0.y-val-07 0.003
> setp lincurve.0.x-val-08 33.000
> setp lincurve.0.y-val-08 0.000
> setp lincurve.0.x-val-09 34.000
> setp lincurve.0.y-val-09 -0.002
> setp lincurve.0.x-val-10 38.000
> setp lincurve.0.y-val-10 -0.002
> setp lincurve.0.x-val-11 39.000
> setp lincurve.0.y-val-11 0.001
> setp lincurve.0.x-val-12 41.000
> setp lincurve.0.y-val-12 0.001
> setp lincurve.0.x-val-13 42.000
> setp lincurve.0.y-val-13 0.002
> setp lincurve.0.x-val-14 47.000
> setp lincurve.0.y-val-14 0.002
> setp lincurve.0.x-val-15 48.000
> setp lincurve.0.y-val-15 0.005
>
>
>
>
> net z-raw axis.2.joint-pos-cmd offset.0.in
> net z-corr lincurve.0.out offset.0.offset
> net zpos-cmd offset.0.out
> net zpos-fb offset.0.fb-in
> net z-pos-fb-offs offset.0.fb-out  axis.2.motor-pos-fb
>
> ###################
>
>
> Not sure what would cause the joint following error on homing though. 
> I did have to change the net zpos-fb assignment in the main and
> lincurve hal files because I was getting a similar error on load that
> I was getting for the net zpos-cmd assignment previously.
>
> Also, it didn't like having offset.0.fb-out sent to
> axis.2.joint-pos-fb, so I set that to axis.2.motor-pos-fb.
>
> Here's the error I was getting for the z-pos-fb-offs:
>
> ########################
> mark@canecutter:~$ /usr/bin/linuxcnc
> '/home/mark/linuxcnc/configs/Cane-Cutter/Cane-Cutter.ini'
> LINUXCNC - 2.7.12
> Machine configuration directory is
> '/home/mark/linuxcnc/configs/Cane-Cutter' Machine configuration file
> is 'Cane-Cutter.ini'
> Starting LinuxCNC...
> .
> Found file(REL): ./Cane-Cutter.hal
> Found file(REL): ./lin_curve.hal
> ./lin_curve.hal:46: Signal 'z-pos-fb-offs' can not add OUT pin
> 'axis.2.joint-pos-fb', it already has OUT pin 'offset.0.fb-out'

Again, you must have dual srcs. I think you want:

net z-pos-fb-offs offset.0.fb-out joint.N.motor-pos-fb

Or something similar...

> Shutting down and cleaning up LinuxCNC...
>
> At any rate, something in the homing sequence does not like something
> in these hal files.  In my homing sequence, Z homes first, so here's
> the applicable section of the ini file:
>
>
> [AXIS_2]
> TYPE = LINEAR
> MAX_VELOCITY = 0.09
> MAX_ACCELERATION = 0.3
> STEPGEN_MAXACCEL = 3.3
> #STEPGEN_MAXACCEL = 1.0
> SCALE = 48000.0
> FERROR = 0.05
> MIN_FERROR = 0.01
> MIN_LIMIT = 0.080  # used for table 0 so saw blades do not hit vacuum
> table MAX_LIMIT = 2.4005 # used for table 0
> HOME = 2.4  # used for table 0
> HOME_OFFSET=2.5670  # used for table 0 - 04/3/15 - distance down from
> Z home to table top
> HOME_SEARCH_VEL = -0.09
> HOME_LATCH_VEL = 0.01
> HOME_SEQUENCE = 0
>
>
> I'm stumped at this point.  Any help, pointers, or hand holding would
> be much appreciated.
>
> Thanks,
> Mark
>
>
>
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-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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