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 configurationOn 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)
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>) escribi??: > 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>) > > > > escribi?? > > 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>) > > > > > > escribi??: > > >> 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-linuxcnc > > >>-on- linux= > > >> > > >> > -=3D > > >> > < > > >> > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxcnc > > >>-on- linux=-=3D > > >> > > >> > >>> mint-19-1-quick-and-easy-installation?start=3D3D0 > > >> > >>> < > > >> > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxcnc > > >>-on- linu= > > >> > > >> > x-=3Dmint-19-1-quick-and-easy-installation?start=3D3D0 > > >> > < > > >> > > >> https://forum.linuxcnc.org/9-installing-linuxcnc/36822-linuxcnc > > >>-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 > > >>
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