mike walker wrote: >EMC2 looks interesting. but after fooling with it for a few days on two >different boxes it seems to me that there are issues that need to be addressed. > >Issue One. On both of the boxes I am using there is a common problem. I tell >it to shut down and it hangs on the last screen untill i hit the power switch. >these two boxes were loaded with two different downloads of EMC2. Both >downloads were told to check themselves before being told to load onto the >hard drive. > >the first machine is a four processor intel chip. the second is a 2 processor >intel chip. any ideas? > > There are experimental SMP (multiprocessor) realtime kernels on the linuxcnc.org website, look at <http://www.linuxcnc.org/experimental/>.
>Issue two. And to me much bigger. EMC2 basicly supports 6 I/O boards out of >the box. Personaly I do not want to spend a thousand bucks buying boards, >daughter boards, and softwhere to see if i can control a piece of machinery. >If i was doing it to sell comercialy that is one thing. but for what I do in >my garage, not so much. what i need is a PCI I/O board with at least 24 and >preferibly 48 I/O points that i can wire to a opto isolator (if i think i need >it) or directly to a ttl level switch if i think i do not. > > EMC2 supports more hardware than anything else on the market, out of the box. You are not tied to the few items listed on the hardware page either, since you are free to write, or hire someone to write, a driver for whatever hardware you would like to use. > Why do i want all this? I have been designing machines for almost 40 years. I > have been fiddling with EMC2 for a couple of days. Linux? same thing. I want > SOME options built in. > You have all the options in the world built in already. On a more practical level, you can start experimenting with just a parallel or serial port, then move up to higher I/O count boards, then to boards with FPGAs for high speed functions, and also to analog servo ocontrol boards. I'm not sure quite what you mean by having "some options built in" if that doesn't cover it. >Like a decent I/O board, maybe some closer error checking. > Closer than what? Error tolerances are set up by the user. You can have a machine that will throw a following error if it's one micron out of position. EMC2 is the only low (or no) cost system that actually closes the servo loop with the motion controller. Other inexpensive systems that support feedback can only use it as a traveling limit switch for detecting following errors, they don't use the feedback to alter the motor commands. > (The first machine (windows based with linux sharing updated ok.) i started > the second machine up, connected to the web, it reported that there were 11 > updates. it loaded 4 of them and choked on 7, got to wonder what gives. > > Network errors? It's pretty uncommon for updates to fail on Linux these days. You don't mention what you mean by "choked" either. Did you run out of disk space? Did the downloads fail? Was some package unable to be updated for some reason? You can click the "details" button and see what happened - it opens up the hidden terminal where all the package updating actually happens. Sometimes, there will be the need to hit enter or something in this terminal, which may not be shown in the dialog box. - Steve ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
