On Thursday 01 September 2016 01:17:40 dan...@austin.rr.com wrote: > ---- Gene Heskett <ghesk...@shentel.net> wrote: > > On Wednesday 31 August 2016 20:49:22 dan...@austin.rr.com wrote: > > > I'm using the LinuxCNC 2.7.4 with the realtime support. > > > > > > Does the "2.8 pre" have the same RT support? > > > > > > Danny > > > > First, please don't top post, and second, yes. > > > > And the 2.7.4 you are running is quite old. If you have not updated > > since the install, please do so before we hear you have been hacked, > > there is a boatload of security fixes in the repositories. I just > > did a fresh install, and despite my having the last respin of the > > install dvd, there were still 244 updates, most of which were small > > so it didn't take long, perhaps 20 minutes with a reboot in the > > middle. > > Is "2.8 pre" stable enough to consider reliable? Is the any practical > way to add JA to an existing installation?
The conversion is automatic in the first invocation. I had a problem on the first one, restored from backups, reported the problem, and on the next update a few hours later, got a new version that worked. Been working ever since. Any tantrums I've had have been 100% PEBCAK as you saw by my previous postings earlier tonight. I am running it (the master-rt 2.8something) on a small mill using software stepping, on a larger mill using a (Mesa) 5i25 card, and on a small lathe, using a 5i25 card, and the Sheldon I am rebuilding will have a 5i25 card running things when its ready to make swarf. All are stepper driven except the spindles. The small lathe and the bigger mill both have spindle encoders I made and brushed 1 hp motors, driven by a pico systems (Jon Elson) pwm-servo amps. The small mill is using its OEM motor & a repaired driver which has very stiff speed, but no encoder. The Sheldon will have a 1 HP 3 phase, operated by a bogus 1.5 Kw VFD, and will have an encoder when the hall effect parts get here. Spindle speed limits are essentially canceled as I have had the VFD up to 200 Hz which it seems quite happy with sitting on the table. That will bring the spindle up to around 3500 revs, more than I'll ever need. 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
