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
