On Saturday 01 September 2018 16:24:20 Gene Heskett wrote: > Greetings to my probably saner friends on this list; new info, and newer config from the .ini file joint.0.=x #FERROR = 0.0010 FERROR = 0.25000 <-room for x to play #MIN_FERROR = 0.00020 MIN_FERROR = 0.12500 <- ditto, both must be in radius HOME = 1.000 HOME_IS_SHARED = 0 HOME_OFFSET = 0.00 HOME_SEARCH_VEL = 0.025 HOME_LATCH_VEL = -0.005 HOME_FINAL_VEL = 0.025 So I can watch it moving in slow motion.
>From the .hal file: All lincurve.0.y-val-NN = 0.0000000, so nothing at bwX0 >below Also comments added to indicate homeing actions ########################## # do bedwear hookups # # Z=joint.1 = stepgen.00 # # X=joint.0 = stepgen.03 # ########################## # lincurve needs input from Z position # 1st, drive the Z motor from motion.0.joint.1.pos-cmd net Zdrive <= joint.1.pos-cmd => hm2_[HOSTMOT2](BOARD).0.stepgen.00.position-cmd # watch bwZ to see if it moves DOES # now route feedback back to motion net bwZ <= hm2_[HOSTMOT2](BOARD).0.stepgen.00.position-fb => joint.1.motor-pos-fb # now send real Z position to lincurve.0.in net bwZ => lincurve.0.in Z-axis-track.in # lincurve.0.in is Z's position # so now send lincurve.0.out to X via offset.0.offset net bwX0 <= lincurve.0.out => offset.0.offset # is desired offset, currently 0.0000 regardless of Zpos # bwX0 remains at zero as homing x progresses as Z hasn't moved yet # that gets us the X correction factor out of Z's position # so now send desired X motion to offset.0.in net bwX1 <= joint.0.pos-cmd => offset.0.in # bwx1 progresses as x moves and is frozen by the error reported below at -0.0924137 # send the offset diddled x to driver cmd net bwX2 <= offset.0.out => hm2_[HOSTMOT2](BOARD).0.stepgen.03.position-cmd # bwX2 tracks bwX1 exactly till home switch closes, x moves at top speed inward about 1/2" and is frozen at bwX1's reading of 0.0924137 after the error reported below. # now get its resultant position & send it to offset0,fb-pin net bwX3 <= hm2_[HOSTMOT2](BOARD).0.stepgen.03.position-fb => offset.0.fb-in # bwX3 freezes at homex true, to .5372633" I'm assuming after the rapid inward move which is done faster than the motor can run # feed offset removed motor postion back to motion net bwX4 <= offset.0.fb-out => joint.0.motor-pos-fb # result to motion via joint net bwX4 => X-axis-track.in # and to X-track.in # as is bwX4, frozen at .5372633" All except bwX0, track perfectly while 1st backout motion, looking for homez to go true is underway The home move is terminated with this error at the end of an unprogrammed inward move at high speed when the home switch closes. showing on LCNC screen: home switch inactive before start of latch move j-0 If I press F2 to re-activate, the motor just buzzes as apparently all speed and accel settings are ignored for this unwanted move. A 1/4 sec later a following error for joint.0 is displayed. I think I have a similar error in Z homing, but pressing f2 after this initial stop always always gets a motor buzz and a following error. That, when I piddled around and finally got to z homing, results in the carriage now moving the wrong direction if its off the switch, and where it, 1 or 2 upgrades back and for quite some time if it was on the switch, would first run to the right to get off the switch, then do the normal search for switch things. I have NOT played with the signs of the homing moves in the ini file in a year or more. Has your canary in the coal mine actually found a bug in master? I can zero the HOME_SEQUENCE nums and test individually if that helps but haven't yet. Time to go check the crock-pot and see if dinner is edible yet. Thanks for any clues. -- 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
