> -----Original Message----- > From: cogoman [mailto:[email protected]] > Sent: 15 December 2012 20:55 > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] LinuxCNC documentation in russian > > I work with a CNC machine that uses an old Bandit controller. Even > though it doesn't do any heavy lifting (all 2d work), sometimes we > overflow the 512 program commands allowed (X1. Y2. counts as 2). I > think that an old machine with reliable axes and spindle would be much > more useable with LinuxCNC than with a program limit of 512 commands!
I've got a machine with much the same limit (1200 line) - which is somewhat frustrating at times. I couldn't figure out a way to (easily and cheaply) convert it over to linuxcnc without replacing the existing drives and resolvers - which made it a rather more time consuming and expensive task than I was willing to undertake. Oddly enough, there was a post from Tim James earlier today about a conversion chip which looks like it may allow me to use the original resolvers - bringing the pain of conversion down to tolerable levels. The other option would be to upgrade the controller to a TNC 151 or 155 - but they seem to be rather rare these days. > Right though, that you would want to select a motherboard that's > reliable. Trying 2 MBs to get 1 good one wouldn't be all that > expensive for a production environment. > I think this depends on the value of labour more than anything - either you have a low (relative) labour cost, in which case it's worth testing multiple boards, changing caps, etc (or as used to be done, custom fitting bearings, hand scraping, ...) or you have a high labour cost, in which case it's worth spending more money on a highly reliable board in the first place (universally matched precision bearings, ground ways). I'm a lot more willing to spend time repairing or upgrading components for my hobby than I am for my day job. Fixing 'dead' motherboards by replacing the failed caps used to be a darn sight cheaper than buying a new machine - not so sure it is now. ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
