On Tue, 2011-04-12 at 11:23 -0500, Jon Elson wrote: > Stuart Stevenson wrote: > > Gentlemen, > > I was just made aware of a recurring problem with the Cinci and the Enshu. > > I have heard nothing about the Dahlih. > > The Enshu is running 2.5.0-pre and Touchy interface. > > The Cinci is running 2.5.0-pre and Axis interface. > > Yesterday the Enshu lost Y position during a program run. The Cinci has > > done this previously but that was before the latest update to 10.04 and > > 2.5.0-pre. > Can you restore the machines to the older software? How recent was the > upgrade? > What is the MTBF (sounds like about a day or so?) > > If it weren't for an apparently recent software update, I'd suspect a > problem in the PPMC encoder board. > I have made changes in the PPMC driver, but these changes should be > disabled for the PPMC, since it > doesn't have the necessary firmware to timestamp the most recent encoder > count. I'm pretty sure the > ppmc driver is not supposed to do anything differently if the new > features are not enabled. > > I suppose you could run the diagnostic program overnight with the > commtest test to see if any errors > show up. > > What is the following error tolerance in the .ini file? If it was an > encoder or encoder counter problem, it should cause a sudden following > error of .4", which would be expected to trip the error message and stop > the machine. If your following error tolerance is less than 0.4", then > I think the encoder reading components are off the hook, and it is > somehow an offset that is getting applied to the axis. > > Jon Hi Jon, I just talked to Stuart. He tells me that it also happened on the cinci with 6.06 and I presume an earlier version of emc. Seldom are these events easy to diagnose. ;-)
Dave > > ------------------------------------------------------------------------------ > Forrester Wave Report - Recovery time is now measured in hours and minutes > not days. Key insights are discussed in the 2010 Forrester Wave Report as > part of an in-depth evaluation of disaster recovery service providers. > Forrester found the best-in-class provider in terms of services and vision. > Read this report now! http://p.sf.net/sfu/ibm-webcastpromo > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Forrester Wave Report - Recovery time is now measured in hours and minutes not days. Key insights are discussed in the 2010 Forrester Wave Report as part of an in-depth evaluation of disaster recovery service providers. Forrester found the best-in-class provider in terms of services and vision. Read this report now! http://p.sf.net/sfu/ibm-webcastpromo _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
