On Thursday 12 March 2020 15:15:14 Peter C. Wallace wrote: > On Thu, 12 Mar 2020, Gene Heskett wrote: > > Date: Thu, 12 Mar 2020 14:52:47 -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] 6i24 + 7i44 configuration > > > > On Thursday 12 March 2020 12:23:06 Leonardo Marsaglia wrote: > > > > Well, I checked the cable for continuity on those pins and > > everything seems to be ok. I still can't output pulses from those > > pins. I can only sense the direction changing. The only thing I can > > come up with is to shift to stepgen 1 and 2 for X and Z and leave > > stepgen 0 unused. At least until I can solve the problem. > > > >Theres also the possibility of a damaged output gate in the fpga. > > they are only 3.3 volt fpga's, and 5 volts is enough to write their > > obits. > > Not quite true, the FPGA I/O bits are 5V tolerant (and safe to about > +7V) What typically damages outputs is negative inputs without current > limiting. 1V of HF noise without some current limit will damage and > short the input protection diodes. This is easy to generate just by > touching bare FPGA pins to frame ground in a system with motor drives > (step drives, servo drives, VFDs all generate significant ground > bumping, often multiple volts in the frame ground) > And at the time I was having a hell of a time with noise because I didn't single point the grounding, had noise up to 100+ MHz, and 40 volts either side of the DC level, which I did the single point bolt at the same time I put in the triplet of 7i42TA's. Slow learner=me I guess.
> >I damaged a couple 7i90HD's until I put 7i42TA's into the setup for > >overvoltage buffers, no problems since and they do give you nice > > screw terminals for hookups. My current setup has 2 blown stepgens > > so I have 4 enabled, useing 2 and 3 in place of 0 and 1. Thats a > > custom hal file but no problem for me, and LCNC doesn't care if you > > diddle the hal file to fix our stupids. :) So if there are spares, > > use them. > > > > El jue., 12 mar. 2020 a las 11:03, Gene Heskett > > (<ghesk...@shentel.net>) > > > > escribiÿÿ: > > > On Thursday 12 March 2020 08:53:39 Leonardo Marsaglia wrote: > > > > I'm going to check the flat cable, that I'm missing. > > > > > > > > El jue., 12 mar. 2020 a las 9:48, Leonardo Marsaglia > > > > (<ldmarsag...@gmail.com>) > > > > > > > > escribiÿÿ > > > > > > I was gonna suggest that, Leonardo, I've had flat cables that had > > > gone funkity in just a year because they needed another trip thru > > > the vice to bring the crimps and the idc connectors fully together > > > because they never fully latched the first time. And age of the > > > connector can be important if its not visibly gold flashed. Those > > > tend to get intermittent in 5 to 10 years. Cut the old connector > > > off flush and put a new plated connector on it if its still long > > > enough to reach, or order both connectors and enough cable to make > > > a new one that will reach. > > > > > > > > Hello again, > > > > > > > > > > I'm almost done with testing, but I have a little problem with > > > > > the 7i52s on stepgen 0. I can measure the direction pin > > > > > changing with or without /TX0BENA enabled (that is gpio 023 on > > > > > 0 since I have the 7i52s on P2 of the 6i24), I don't know if > > > > > this is normal. And also, I can't sense any pulses comming out > > > > > of stepgen 0, but stepgen 1 is working ok. > > > > > > > > > > I'm I missing something? > > > > > > > > > > Thank you! > > > > > > > > > > El lun., 9 mar. 2020 a las 20:33, andrew beck > > > > > (<andrewbeck0...@gmail.com>) > > > > > > > > > > escribiÿÿ: > > > > >> Hey just a quick question on this. Is it possible to take > > > > >> one is these iso > > > > >> files update to linuxcnc 2.8 and then load it all onto a USB > > > > >> so I don't have to go through the whole update thing every > > > > >> time I want to install linuxcnc 2.8 on mint? > > > > >> > > > > >> Regards > > > > >> > > > > >> Andrew > > > > >> > > > > >> On Tue, Mar 10, 2020, 10:58 AM Robert Murphy > > > > >> <robert.mur...@gmx.com> > > > > >> > > > > >> wrote: > > > > >> > They are =E2=80=9Ctesting=E2=80=9D in case the guy who put > > > > >> > them together mes= > > > > >> > sed up. > > > > >> > All they are is a std Mint ISO with what is required to run > > > > >> > linuxcnc. > > > > >> > > > > >> They > > > > >> > > > > >> > c= > > > > >> > an be installed and are good for a system, so far as no one > > > > >> > has reported any= > > > > >> > major issues. > > > > >> > Please read the first page fully, then follow the link to > > > > >> > the > > > > >> > > > > >> appropriate > > > > >> > > > > >> > pa= > > > > >> > ge, read that and download.=20 > > > > >> > > > > > >> > Composed with my Crayons=20 > > > > >> > > > > > >> > On 10 Mar 2020, at 04:31, Leonardo Marsaglia > > > > >> > <ldmarsag...@gmail.com> > > > > >> > > > > > >> > wrote: > > > > >> > >>=20 > > > > >> > >> The kernel in the latest ISOs, from my testing, has > > > > >> > >> better latency > > > > >> > > > > >> than > > > > >> > > > > >> > >> the K=3D > > > > >> > >> ona kernel. Cinnamon is quite resource hungry, MATE is > > > > >> > >> next and XFCE > > > > >> > > > > >> is > > > > >> > > > > >> > >> the l=3D > > > > >> > >> ightest of the three.=3D20 > > > > >> > >> Wireless can have a negative effect . Out of interest > > > > >> > >> what machine or mother=3D > > > > >> > >> board specs have you got at your disposal? > > > > >> > > > > > > >> > >=20 > > > > >> > >=20 > > > > >> > > I'm using an ASUS A58M-5 with a PCI-Express gpu. I didn't > > > > >> > > wan to use > > > > >> > > > > >> the > > > > >> > > > > >> > > onboard just in case it increases the latency. The > > > > >> > > microprocessor is > > > > >> > > > > >> an > > > > >> > > > > >> > > AMD A4 4000. > > > > >> > >=20 > > > > >> > > El lun., 9 mar. 2020 a las 14:27, Leonardo Marsaglia > > > > >> > > > > > >> > (<ldmarsaglia@gmail.c= > > > > >> > om>) > > > > >> > > > > > >> > > escribi=C3=B3: > > > > >> > >=20 > > > > >> > > > > > > >> > >> Why? > > > > >> > >> > > > > >> > >>> The link I gave was to ISO images for prempt-rt and > > > > >> > >>> rtai. =20 > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-wi= > > > > >> > > > > >> > th-rtai-and-rt?start=3D0 > > > > >> > < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-wi=th-rtai-and-rt?start=3D0 > > > > >> > > > > >> > >>=20 > > > > >> > >>=20 > > > > >> > >> I tried the one on the link to the other thread because > > > > >> > >> the ones > > > > >> > > > > >> shared > > > > >> > > > > >> > o= > > > > >> > n > > > > >> > > > > > >> > >> drive are meant to be used as live cd for testing, at > > > > >> > >> least that's > > > > >> > > > > >> what > > > > >> > > > > >> > i= > > > > >> > t > > > > >> > > > > > >> > >> says there. But I can give it a try after work. Let me > > > > >> > >> know if I > > > > >> > > > > >> missed > > > > >> > > > > >> > >> something. > > > > >> > >>=20 > > > > >> > >> El lun., 9 mar. 2020 a las 14:13, Robert Murphy (< > > > > >> > > > > >> robert.mur...@gmx.com > > > > >> > > > > >> > >)= > > > > >> > > > > > > >> > >> escribi=C3=B3: > > > > >> > >>=20 > > > > >> > >> > > > > >> > >>> The kernel in the latest ISOs, from my testing, has > > > > >> > >>> better latency > > > > >> > > > > >> than > > > > >> > > > > >> > >>> the K=3D > > > > >> > >>> ona kernel. Cinnamon is quite resource hungry, MATE is > > > > >> > >>> next and > > > > >> > > > > >> XFCE is > > > > >> > > > > >> > >>> the l=3D > > > > >> > >>> ightest of the three.=3D20 > > > > >> > >>> Wireless can have a negative effect . Out of interest > > > > >> > >>> what machine > > > > >> > > > > >> or > > > > >> > > > > >> > >>> mother=3D > > > > >> > >>> board specs have you got at your disposal? > > > > >> > >>>=20 > > > > >> > >>> Composed with my Crayons=3D20 > > > > >> > >>>=20 > > > > >> > >>> > > > > >> > >>>>> On 10 Mar 2020, at 02:10, andy pugh > > > > >> > >>>>> <bodge...@gmail.com> wrote: =3D20 > > > > >> > >>>>> On Mon, 9 Mar 2020 at 14:18, Leonardo Marsaglia < > > > > >> > > > > > >> > ldmarsag...@gmail.com= > > > > >> > > > > > >> > >>> w=3D > > > > >> > >>> > > > > >> > >>> rote: > > > > >> > >>>>> =3D20 > > > > >> > >>>>> I tried Cinnamon desktop and intalled the kernel > > > > >> > >>>>> following the > > > > >> > >>> > > > > >> > >>> instructio=3D > > > > >> > >>> ns > > > > >> > >>> > > > > >> > >>>>> here : > > > > >> > >>>>>=20 > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxc > > > > >>nc -on- linux= > > > > >> > > > > >> > -=3D > > > > >> > < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxc > > > > >>nc -on- linux=-=3D > > > > >> > > > > >> > >>> mint-19-1-quick-and-easy-installation?start=3D3D0 > > > > >> > >>> < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxc > > > > >>nc -on- linu= > > > > >> > > > > >> > x-=3Dmint-19-1-quick-and-easy-installation?start=3D3D0 > > > > >> > < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxc > > > > >>nc -on- > > > > >> linu=x-=3Dmint-19-1-quick-and-easy-installation?start=3D3D0 > > > > >> > > > > >> > >>>> =3D20 > > > > >> > >>>> Why? > > > > >> > >>>> =3D20 > > > > >> > >>>> The link I gave was to ISO images for prempt-rt and > > > > >> > >>>> rtai. =3D20 > > > > >> > >>>>=20 > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-wi= > > > > >> > > > > >> > th=3D > > > > >> > < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-wi=th=3D > > > > >> > > > > >> > >>> -rtai-and-rt?start=3D3D0 > > > > >> > >>> < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-w= > > > > >> > > > > >> > ith=3D-rtai-and-rt?start=3D3D0 > > > > >> > < > > > > >> > > > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/38308-linux- > > > > >>mi nt-i so-w=ith=3D-rtai-and-rt?start=3D3D0 > > Cheers, Gene Heskett 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis 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
