On Tuesday 12 March 2019 11:17:05 Peter C. Wallace wrote: > On Tue, 12 Mar 2019, Gene Heskett wrote: > > Date: Tue, 12 Mar 2019 06:12:23 -0400 > > From: Gene Heskett <ghesk...@shentel.net> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > To: emc-users@lists.sourceforge.net > > Subject: [Emc-users] More for PCW > > > > Greetings Peter; > > > > The 7i76d has a spindle encoder, so I'm looking for suggestions as > > to how to drive it. > > > > The ER11 chuck has doubleD flats, but placing ATS-667's there > > precludes using a wrench to tighten a tool, so thats out. > > > > The top/rear of the ER11 has a slinger disk around 1.25" in > > diameter, currently ummolested by any markings, located about 1/4" > > above the doubleD flats. Has anyone pulled the collet, and made cuts > > to drive ATS-667's, which would need two for balance symmetry, > > effectively making a doubleD out of the slinger which could then be > > sensed with the ATS-667's. Or perhaps painted so that > > photo-reflective sensors, if fast enough, could read the paint. At > > 24k revs, what kind of paint wouldn't fly off? > > > > There is I think, an output available from the vfd too but I've no > > clue if its needing isolation or with the poor docs we have for this > > vfd, how to enable it. I have not noted an ac voltage on the > > spindle-+ or speed wires, so the isolation may be in the vfd. > > > > But two problems there, first being the top of the 8 bit value of > > the first 4 inputs being around 38 volts, considerable higher than I > > would expect from the vfd, and 2, I've just read thru the docs for > > the 7i76, hostmot2, hm2_pci, and sserriel and setsseriel, without > > finding out how to enable mode 1 so the first 4 inputs become analog > > enabled. Nor how much of a speed penalty there might be if those > > modes are enabled. > > > > So some guidance is needed. I think it would be nice if the pyvcp > > tach worked, which it isn't now. > > > > 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> > > To enable mode 1 or 2 you add this token to the loadrt hm2_pci line: > > sserial_port_0=1xxx > or > sserial_port_0=2xxx" > > This is in the hostmot2 manual page > Not really.
Not in a context that mentions analog. What is there writes about gpio modes, but no mention of what "mode" is defined as. So am I to assume, from what I do read there, that sserial_port_0=1111 would make the first 4 inputs analog sensitive? But no matter, its a config error to hm2_pci. But sserial_port_0=1xxx is precisely right. Now I see 4 analog inputs. There is no way I could derive that from the man page text. We'll experiment. Thank you. first thing of note is: task: 89749 cycles, min=0.000054, max=0.093368, avg=0.006010, 3 latency excursions (> 10x expected cycle time of 0.005000s) But the servo-thread time is set to 1 millisecond, so where is it getting the "expected .005"? 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
