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 ------------------------------------------------------------------------------ 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
