On Thu, 16 Feb 2012, James Louis wrote: > Date: Thu, 16 Feb 2012 09:02:26 -0600 > From: James Louis <james.lo...@gastechnology.org> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "emc-users@lists.sourceforge.net" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] More control board questions > > Are there any example wiring diagrams available for this "easy" closed loop > stepper configuration? > It sounds interesting. > Jim
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?GantryPlasmaMachine includes HAL files I believe > > ----- Original Message ----- > From: Peter C. Wallace <p...@mesanet.com> > To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> > Sent: Thu Feb 16 08:42:33 2012 > Subject: Re: [Emc-users] More control board questions > > On Thu, 16 Feb 2012, Erik Friesen wrote: > >> Date: Thu, 16 Feb 2012 08:29:52 -0500 >> From: Erik Friesen <e...@aercon.net> >> Reply-To: "Enhanced Machine Controller (EMC)" >> <emc-users@lists.sourceforge.net> >> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> >> Subject: [Emc-users] More control board questions >> >> How feasible is it to use the mesa 5i25 in a similar way to the universal >> stepper controller? IE.. Use hardware step generation + encoder feedback? > > Its easy, there are number of our customers doing this with step motors or > step/dir driven servos. You just use a configuration with stepgens and encoder > counters. Inside HAL the stepgens are set into velocity mode and PID loops are > setup to so the PID output sets the step rate of the step motors or step/dir > servos, basically emulating a velocity mode servo system. > > > (encoder_count, commanded_pos) --> PID comp --> stepgen_velocity_command > --> motor drive --> encoder_count > > >> >> Another ignorant question, why is the industry so inclined to isolated IO? >> vs single board designed systems where everything is layed out properly. >> This just gets me, when trying to make a control system look neat, and you >> have to use a hodge podge of different breakout boards, drivers, etc, with >> a resultant rats nest of wires. >> ------------------------------------------------------------------------------ >> Virtualization & Cloud Management Using Capacity Planning >> Cloud computing makes use of virtualization - but cloud computing >> also focuses on allowing computing to be delivered as a service. >> http://www.accelacomm.com/jaw/sfnl/114/51521223/ >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > This communication is for the use of the intended recipient only. It may > contain information that is privileged and confidential. If you are not the > intended recipient of this communication, the disclosure, copying, > distribution or use hereof is prohibited. If you have received this > communication in error, please advise me by return e-mail or by telephone and > then delete it immediately. > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
