On Tuesday 12 March 2019 15:08:51 Peter C. Wallace wrote: > On Tue, 12 Mar 2019, Gene Heskett wrote: > > Date: Tue, 12 Mar 2019 14:08:34 -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: Re: [Emc-users] More for PCW > > > > 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. > > This is in the 7I76 manual, the mode meanings cannot be specified in > the hostmot2 manual page since its really specific to the sserial > remote and can mean almost anything depending on the sserial remote > The 7i76 manual mentions the logic thresholds, which for me means I have to use 12 volts for everything as the true noise margin vanishes for a 5 volt logic rail input in that case. Not a huge problem, but it could be if not paying attention to such details. One thing that is missing, is that the 12 volt field power is in need to another terminal strip to enable that 12 volt feed out to home/limit switches and such. Haveing a common point for this power distribution nearer the edge of the board would be about as handy as bottled beer. :) Something with about 1 amp PTC fuses feeding it would be frosting on the cake. But I've no idea where to put it, the card is about 1/16" deeper than the box as is. But I'll figure out something. :)
Thanks Peter. > > 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. > > Thats true, you need to look at the manual page in conjunction with > the 7I76 manual. > > > 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"? > > This is not related to real time at all, just tasks polling time > of motion > That was the first time I ran it in that mode, its now a lot better behaved. 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
