On Thursday 20 September 2018 10:49:33 Gene Heskett wrote: > On Wednesday 19 September 2018 21:13:55 Gene Heskett wrote: > > On Wednesday 19 September 2018 17:44:15 andy pugh wrote: > > > On Wed, 19 Sep 2018 at 21:40, Gene Heskett <[email protected]> > > > > wrote: > > > > My little lathe is doing funny things with the z axis. > > > > The halmeter menu cannot find the joint.1.motor-pos-cmd output > > > > to monitor it. > > > > > > That can't possibly be the fault of the 5i25. > > > > > > In fact, even without a 5i25 that pin should exist. > > > > > > If num_joints was set to 1 then you wouldn't have that pin. > > > Otherwise I suspect that you are looking in the wrong place. > > > Signals rather then Pins tab? > > > > No, I was looking in the pins tab, but was looking for > > joint.1.motor.pos.cmd, which does not seem to exist. > > > > Because theres no motor power though, I can look from here. And > > joint.1.motor-pos-cmd does exist now... > > > > But neither joint.0 or joint.1 motor-pos-cmd existed at 16:50 this > > afternoon, with power applied to the BoB and motors. > > > > Me goes wandering off in the general direction of the fridge for my > > nightly near beer. > > Never did get it, went to bed instead, back killing me. > > (don't get old, its no fun) > > Got up this morning and I believe I have fixed it. I first went thru > the x stuff, combining net names etc so the signal paths were more > obvious. Without bob or motor power, x still worked. Nuked the whole > Z stanza, and copy/pasted the X stuff to a Z stanza, then edited where > needed to change x to z and joints and stepgens to 1. Also temporarily > made it home individually. Even passes the two_pass now which it > didn't before. So theoreticly, all I need to do is calibrate the > scale, and soft limits, and TLM should be usable again. > > But before I set limits, which are stated as being in machine units, > is this the figure from joint.n.position-cmd when the machine is > driven to that particular position? > [...] The answer is a resounding no! Looking around I did find where to source that data.
That problem was easy enough to solve once I had applied a 3rd cuppa, the key is in the DRO's display modes. Put it in actual, machine mode, run it to where you want the soft limits, write down what the DRO says in RAD for x, and whatever it displays for Z, after of course homing the machine. Put those in the 2 places for each per axis n and joint n in the ini file. Restart LCNC and check. Works, but I've litterally a micron between the back of the crossfeed and the face of the x home switch and an all done, very solid mechanical stop, I had to move the limit out .05mm at a time to stop the limit disable while homing X. But I hate to admit it, but when I copy/pasted the new Z section in my hal file, one paragraph of "get it from the ini" stuffs didn't get its 0's rewritten with 1's. I spent over an hour running the z scale up about 20% at a time trying to make a g1 f50 Z-25.4 give me more than .776" of motion. Anyway, I think TLM, subject to some possible following error tolerance adjustments, is ready to go again. ======= Now I need to see if I can remove the camera lens, and find a chunk of ND10 to cover it, and find out if I have a camera with a big enough image chip in it to make this 38 cal laser thing actually workable. -- 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> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
