On Tue, Apr 12, 2011 at 10:02 AM, Peter C. Wallace <[email protected]> wrote:
> On Tue, 12 Apr 2011, andy pugh wrote: > > Date: Tue, 12 Apr 2011 15:46:58 +0100 >> From: andy pugh <[email protected]> >> Reply-To: "Enhanced Machine Controller (EMC)" >> <[email protected]> >> To: "Enhanced Machine Controller (EMC)" <[email protected]> >> Subject: Re: [Emc-users] losing position >> >> >> On 12 April 2011 15:34, Stuart Stevenson <[email protected]> wrote: >> >> Yesterday the Enshu lost Y position during a program run. The Cinci has >>> done this previously >>> >> >> This sounds vaguely similar to >> >> http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,38/id,8552/lang,english/ >> Though I have not, as yet, seen any follow-up data on it. >> >> -- >> atp >> "Torque wrenches are for the obedience of fools and the guidance of wise >> men" >> > > One difference with Stuarts problem is that no following error was > reported, so maybe theres a slow leak of encoder counts or an > offset in the commanded position somewhere upstream. > > there was no following error reported a slow leak would have lead to error accumulating? this error was immediate both machines are using servos both machines have encoders both machines use Pico-Systems PPMC > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > ------------------------------------------------------------------------------ > 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 > > -- dos centavos ------------------------------------------------------------------------------ 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
